The best motorcycle suspension system depends on your bike, load, and preferred ride: for this roundup, the Legend Suspension REVO-A is my best overall pick for adjustable rear damping, while the Progressive Suspension 412 offers a simpler coil-shock alternative and Legends Aero Air suits riders seeking air-based adjustment on compatible touring models. The biggest tradeoff is between the easy load and ride-height changes of air systems and the simpler, more conventional setup of coil shocks. Fitment varies sharply across Harley-Davidson families and years, and a universal shock is not automatically a safe direct fit. Read on for the full comparison, buying advice, and answers to common fitment and setup questions.
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Key Takeaways
- Fitment separates these options more than their broad category labels: several air kits are limited to Harley touring models, while the Mofun shocks target Dyna and Sportster bikes and the Universal 190 mm shock needs careful measurement before purchase.
- The Legend REVO-A 13-inch shock earns the overall nod for adjustability: it offers a more tailored coil-shock approach than the fixed-length, low-profile Progressive 412 options.
- Air suspension is the clearest choice for riders who change load or ride height: the GELUOXI, Woosphy, and TCMT touring kits differ by stated fitment range, so year and model verification matters more than the shared air-ride label.
- Progressive 412 models favor straightforward coil-shock replacement: the 11-inch Chrome, 11.5-inch Standard Low Buck, and 12-inch Heavy-Duty versions reflect distinct priorities around profile, length, and load needs rather than one universal upgrade.
- Premium and value are not just brand or feature counts: Legends’ Aero Air and REVO-A target riders seeking adjustability, while less complex coil shocks may be a better match for riders who want a conventional setup and can confirm the correct fit.
| GELUOXI Rear Air Ride Suspension Set for Harley-Davidson Touring Models, 1994–2023 |  | Best for Broad Touring Fitment | Brand: GELUOXI | Suspension position: Rear | Fitment: Select Harley-Davidson touring models | VIEW LATEST PRICE | See Our Full Breakdown |
| TCMT Remote Reservoir Rear Suspension Shocks for Harley Touring Models |  | Best for Damping Adjustability | Brand: TCMT | Type: Remote reservoir rear suspension shocks | Compression damping: 19 levels | VIEW LATEST PRICE | See Our Full Breakdown |
| Woosphy Rear Air Suspension Kit for 1994–2023 Harley-Davidson Touring Models |  | Best for Adjustable Ride Height | Brand: Woosphy | Position: Rear | Fitment: Harley-Davidson Touring models, 1994–2023 | VIEW LATEST PRICE | See Our Full Breakdown |
| Legend Suspension REVO-A Adjustable Rear Motorcycle Shocks, 13 in, Standard, Black |  | Best for a Conventional Adjustable Shock Setup | Brand: Legends | Model: 1310-0959 | Part number: 1310-0959 | VIEW LATEST PRICE | See Our Full Breakdown |
| Legends Aero Air Suspension for 1999–2019 FLH Touring Models, Black |  | Best for a Defined FLH Fitment Window | Brand: Legends | Product type: Air suspension | Model compatibility: 1999–2019 FLH Touring models | VIEW LATEST PRICE | See Our Full Breakdown |
| Progressive Suspension 412-4037C Chrome 11-Inch Rear Suspension Shock |  | Best for Simple, Load-Adjustable Cruiser Replacement | Brand: Progressive Suspension | Model number: 412-4037C | Position: Rear | VIEW LATEST PRICE | See Our Full Breakdown |
| TCMT Rear Air Ride Suspension Kit for Harley Touring Models, 1994–2025 |  | Best for Adjustable Touring Ride Height | Brand: TCMT | Fitment: Harley Touring models, 1994–2025 | Adjustment: Height-adjustable air suspension | VIEW LATEST PRICE | See Our Full Breakdown |
| Universal 190 mm Adjustable Motorcycle Shock Absorber |  | Best for Small-Format Motorcycles | Brand: Bediffer | Fitment: Universal listing for scooters, mopeds, electric vehicles, and mini motorcycles | Mounting distance: 190 mm (7.48 inches) | VIEW LATEST PRICE | See Our Full Breakdown |
| Legends Revo-A Adjustable FL Coil Suspension, 13 in. |  | Best for Fine-Tuning Touring Coil Suspension | Brand: Legends | Model number: 1310-1741 | Length: 13 inches | VIEW LATEST PRICE | See Our Full Breakdown |
| Mofun 12-inch Remote Reservoir Rear Shocks for Harley Dyna and Sportster |  | Best for Extensive Damping Adjustment | Shock length: 12 inches (305 mm) | Compatible models: Harley Dyna 1991–2017; Sportster 1988–2022 | Damping adjustment: 18 compression levels; 33 rebound levels | VIEW LATEST PRICE | See Our Full Breakdown |
| Progressive Suspension 412-4063B Rear Shock, 11.5-Inch Standard Low Buck |  | Best for a Lower Rear Setup | Model: 412-4063B | Position: Rear | Extended length: 11.5 inches | VIEW LATEST PRICE | See Our Full Breakdown |
| Progressive Suspension 412 Series 12-Inch Heavy-Duty Rear Shock |  | Best for Heavier Loads | Model: 412-4050B | Position: Rear | Extended length: 12 inches | VIEW LATEST PRICE | See Our Full Breakdown |
| motorcycle suspension system | Brand |
|---|---|
| GELUOXI Rear Air Ride Suspensi | GELUOXI |
| TCMT Remote Reservoir Rear Sus | TCMT |
| Woosphy Rear Air Suspension Ki | Woosphy |
| Legend Suspension REVO-A Adjus | Legends |
| Legends Aero Air Suspension fo | Legends |
| Progressive Suspension 412-403 | Progressive Suspension |
| TCMT Rear Air Ride Suspension | TCMT |
| Universal 190 mm Adjustable Mo | Bediffer |
| Legends Revo-A Adjustable FL C | Legends |
| Mofun 12-inch Remote Reservoir | — |
| Progressive Suspension 412-406 | — |
| Progressive Suspension 412 Ser | — |
More Details on Our Top Picks
GELUOXI Rear Air Ride Suspension Set for Harley-Davidson Touring Models, 1994–2023
I’d choose this set when the main priority is finding a replacement air-ride system for a Harley touring bike across a wide range of model years. Its stated coverage includes select CVO, Electra Glide, Road Glide, Road King, Street Glide, Tour Glide, and Ultra Limited models from 1994–2023, giving it broader year coverage than the Legends Aero Air Suspension, which is listed for 1999–2019 FLH Touring models. That range does not make fitment automatic: the listing says compatibility varies by model and year, so buyers need to verify their exact motorcycle before ordering. The product data also gives no damping adjustments, ride-height range, or installation details, leaving fewer grounds for comparison with the TCMT Remote Reservoir Rear Suspension Shocks, which specify compression and rebound tuning. I see this as a replacement-focused option, not a documented performance-tuning upgrade.
Pros:- Listed for several Harley-Davidson touring model families
- Covers select model years from 1994–2023
- Replacement rear air-ride suspension set
- Product dimensions and item weight are provided for planning
Cons:- Fitment varies by model and year and requires careful verification
- The supplied details do not specify damping adjustments or ride-height range
- Installation instructions and included components are not described
Best for: Harley touring owners seeking a replacement rear air-ride set with listed compatibility spanning multiple model families and model years.
Not ideal for: Riders who want clearly specified damping controls, ride-height range, or installation instructions, or anyone unable to confirm fitment for their exact year and model.
- Brand:GELUOXI
- Suspension position:Rear
- Fitment:Select Harley-Davidson touring models
- Model years:1994–2023; varies by model
- Item weight:17.11 pounds
- Product dimensions:17.3 x 15.6 x 6.1 inches
Our verdict“Pick the GELUOXI set if your priority is a replacement air-ride option with broad stated touring-model coverage and you can confirm exact fitment.”
TCMT Remote Reservoir Rear Suspension Shocks for Harley Touring Models
The TCMT set is the most clearly tunable choice here for riders who want to adjust how the rear suspension responds, rather than focus on air-based ride-height changes. It offers 19 compression settings, 12 rebound settings, and up to 50 mm of preload adjustment, giving riders distinct controls for damping and changing loads from a passenger or luggage. By comparison, the GELUOXI Rear Air Ride Suspension Set is described as a replacement air-ride kit but does not list damping controls; the Woosphy kit emphasizes adjustable ride height instead. Those advantages come with narrow fitment: these shocks exclude CVO models and bikes equipped with a tour trunk, and the stated coverage is limited to select Road Glide, Road King, and Street Glide years. I’d also weigh the 90-day warranty against the detailed adjustment feature set before choosing them for a long-term build.
Pros:- Compression damping adjusts across 19 levels
- Rebound damping adjusts across 12 levels
- Preload adjustment reaches up to 50 mm for rider, passenger, and luggage loads
- Remote reservoir setup includes stainless steel lines
Cons:- Does not fit CVO models or motorcycles equipped with a tour trunk
- Fitment is limited to specified Harley touring models and years
- Warranty is listed as 90 days from purchase
Best for: Owners of compatible 2014-and-newer Road Glide, Road King, or Street Glide models who want separate compression, rebound, and preload adjustments for changing loads or ride preferences.
Not ideal for: CVO owners, riders with a tour trunk, and buyers seeking an air suspension system or fitment across a wider range of touring models.
- Brand:TCMT
- Type:Remote reservoir rear suspension shocks
- Compression damping:19 levels
- Rebound damping:12 levels
- Preload adjustment:Up to 50 mm
- Shock absorber diameter:14 mm
- Fitment:Road Glide 2014–2026; Road King 2014–2025; Street Glide 2014–2026
- Exclusions:CVO models and motorcycles equipped with a tour trunk
- Warranty:90 days from date of purchase
Our verdict“Choose the TCMT shocks if your compatible Harley has no tour trunk and you want detailed damping and preload controls rather than air-ride height adjustment.”
Woosphy Rear Air Suspension Kit for 1994–2023 Harley-Davidson Touring Models
Woosphy makes the clearest case for riders who want to change a touring bike’s rear ride height: the kit is described as lowering the motorcycle by 2 to 3 inches with the air released. Its stated collapsed and extended lengths also give buyers more concrete dimensions than the GELUOXI Rear Air Ride Suspension Set listing, which does not provide a ride-height range. Compared with the TCMT Remote Reservoir Rear Suspension Shocks, Woosphy prioritizes air-based height adjustment over listed compression and rebound tuning; those are different solutions for different goals. The kit is vehicle-specific for Harley-Davidson Touring models from 1994–2023, so it is not a broad universal fit. An installation guide is included, but the product details do not provide the installation steps themselves, leaving less support for buyers who expect a detailed walkthrough.
Pros:- Air suspension allows ride-height adjustment
- Stated lowering range reaches 2–3 inches with air released
- Collapsed and extended lengths are specified
- Installation guide is included
Cons:- Fitment is limited to specified Harley-Davidson Touring models from 1994–2023
- Product details do not provide the installation steps
- Compression and rebound damping adjustments are not specified
Best for: Harley touring owners from the listed model years who want an air suspension kit with a specified lowering range for easier reach or a lower parked stance.
Not ideal for: Riders who want documented compression and rebound adjustments, buyers with motorcycles outside the stated fitment, or owners relying on detailed installation steps in the product listing.
- Brand:Woosphy
- Position:Rear
- Fitment:Harley-Davidson Touring models, 1994–2023
- Fully collapsed length:9.64 inches (24.5 cm)
- Fully extended length:14.17 inches (36 cm)
- Maximum lowering height:3 inches
- Material:Aluminum
- Included components:Installation guide, struts, springs
- Fit type:Vehicle specific
Our verdict“Choose Woosphy if lowering range is your priority and your Touring model fits the stated years, rather than damping control as offered by the TCMT shocks.”
Legend Suspension REVO-A Adjustable Rear Motorcycle Shocks, 13 in, Standard, Black
The Legend Suspension REVO-A is the straightforward pick for riders seeking a conventional adjustable rear-shock pair rather than an air-ride system. Its 13-inch extended length, aluminum construction, and vehicle-specific fit distinguish it from the Woosphy and GELUOXI air kits, which are aimed at changing ride height or replacing air suspension. That difference matters: this listing describes an adjustable shock, but it does not specify adjustment ranges or damping controls, so buyers should not assume the detailed tuning offered by the TCMT remote-reservoir shocks. Fitment is only identified as vehicle-specific, with no compatible motorcycles or years supplied in the product data. I’d put it on the shortlist only after confirming the part number and fit with the bike. The black finish and lighter listed weight are useful details, but they do not resolve the missing application information.
Pros:- Adjustable rear-shock design
- 13-inch extended length is specified
- Aluminum construction with a black finish
- Listed item weight is 8.7 pounds
Cons:- Product data does not identify compatible motorcycle models or years
- Adjustment types and ranges are not specified
- The listing gives no installation details
Best for: Riders whose motorcycle is confirmed compatible with part 1310-0959 and who prefer a 13-inch conventional adjustable rear-shock setup over air suspension.
Not ideal for: Harley touring owners looking for explicitly listed model-year fitment, air-based ride-height adjustment, or specified compression and rebound tuning.
- Brand:Legends
- Model:1310-0959
- Part number:1310-0959
- Product type:Adjustable rear motorcycle shocks
- Extended length:13 inches
- Material:Aluminum
- Finish:Black
- Fit:Vehicle-specific
- Item weight:8.7 pounds
Our verdict“Consider the REVO-A only after confirming vehicle compatibility, especially if you want a conventional shock rather than the air-height focus of the Woosphy kit.”
Legends Aero Air Suspension for 1999–2019 FLH Touring Models, Black
The Legends Aero is the most clearly bounded choice for FLH Touring owners: its stated compatibility is 1999–2019 FLH Touring models, a narrower but more specific window than the GELUOXI and Woosphy kits’ broader 1994–2023 Touring coverage. That makes this a focused air-suspension option, not the most flexible pick across Harley families or years. Compared with the TCMT Remote Reservoir Rear Suspension Shocks, it is identified as an air system, while TCMT supplies detailed compression, rebound, and preload settings; the Aero listing provides no comparable adjustment figures or ride-height range. The supplied description is also sparse, so I can’t judge installation requirements or the system’s tuning features from the product data. Buyers should confirm their exact FLH application before ordering and seek further fitment details if their model sits near a year boundary.
Pros:- Designed for a defined 1999–2019 FLH Touring fitment range
- Air suspension system
- Black finish
- Weight and package dimensions are supplied
Cons:- Compatibility is limited to the stated FLH Touring years
- Product description does not specify adjustment range or damping controls
- Installation details and included components are not described
Best for: Owners of 1999–2019 FLH Touring models who want a specifically listed Legends air-suspension system and can verify compatibility with their exact bike.
Not ideal for: Touring owners outside the listed FLH years, riders seeking published ride-height or damping settings, and buyers who need detailed installation information before purchase.
- Brand:Legends
- Product type:Air suspension
- Model compatibility:1999–2019 FLH Touring models
- Color:Black
- Item weight:11.1 pounds
- Package dimensions:16 x 15.6 x 5.8 inches
- Manufacturer part number:1311-0152
- ASIN:B071HKW8RX
Our verdict“Choose the Legends Aero if your FLH falls within the stated years and you want an air system, but pick the TCMT shocks for documented damping adjustments.”
Progressive Suspension 412-4037C Chrome 11-Inch Rear Suspension Shock
Five-position preload adjustment makes this a practical choice for street-cruiser riders who want to account for changing loads without moving to a more complex suspension system. Its progressive-rate spring and nitrogen-charged, velocity-sensitive damping are intended to keep the response consistent as suspension movement changes. Compared with the Legends Revo-A, this shock offers less tuning range: it lacks external rebound adjustment, but also keeps setup more straightforward. The 11-inch length and vehicle-specific fit are the main limits, so buyers should confirm compatibility and desired ride height before ordering. I’d choose it over an air system such as the TCMT Rear Air Ride Kit when the goal is a conventional replacement shock rather than on-demand height changes; riders seeking extensive ride tuning should look elsewhere.
Pros:- Five-position cam adjuster accommodates different loads without a complex setup.
- Progressive-rate spring is suited to changing suspension demands through its travel.
- Nitrogen charging and velocity-sensitive damping are designed for consistent shock response.
- Double-wall steel body provides a conventional replacement-shock construction.
Cons:- Vehicle-specific fit limits use across different motorcycle models.
- No external rebound adjustment for riders who want finer control of ride behavior.
- Fixed 11-inch length may not suit riders seeking a different ride height.
Best for: Street-cruiser owners who need a compatible 11-inch replacement and want a few clear preload settings for solo riding, passengers, or luggage.
Not ideal for: Riders seeking adjustable rebound, variable ride height, or a broadly compatible shock; fitment is vehicle-specific and the listed adjustments are limited to preload.
- Brand:Progressive Suspension
- Model number:412-4037C
- Position:Rear
- Extended length:11 inches
- Spring:Progressive-rate
- Preload adjuster:5-position cam style
- Material:Alloy steel
- Compatible vehicle type:Street-cruiser motorcycles; vehicle-specific fit
Our verdict“Choose this Progressive shock for a straightforward, preload-adjustable cruiser replacement, but pick the Legends Revo-A if you need external rebound tuning.”
TCMT Rear Air Ride Suspension Kit for Harley Touring Models, 1994–2025
The defining advantage here is air-adjustable ride height: release the air to lower a compatible bike by 2–3 inches, a capability a fixed-length coil shock such as the Progressive Suspension 412-4037C does not offer. TCMT also says the system is designed to allow riding at zero air pressure without tire-to-fender rubbing on most compatible models, which may appeal to riders who want a low parked stance without giving up the option to raise the rear. High-flow fittings and a manifold-style dump valve support the air setup, and instructions are included. The tradeoff is a more involved system than a conventional shock, plus a short 90-day warranty and plastic tees. I’d favor the Legends Revo-A for coil-suspension tuning; this kit is the more relevant pick when ride height is the priority.
Pros:- Can lower the bike by 2–3 inches with air released.
- Height-adjustable design offers flexibility a fixed-length shock cannot provide.
- Nickel-plated brass high-flow fittings and a manifold-style dump valve are included.
- Installation instructions are included, and the kit is designed for zero-pressure riding on most compatible models.
Cons:- Plastic tees may be a durability concern compared with the nickel-plated brass fittings.
- The 90-day manufacturer warranty is limited.
- Packaging or delivery may result in paint loss.
Best for: Harley Touring owners from the listed model years who want to lower the rear at rest and adjust ride height through an air system.
Not ideal for: Riders who prefer a simple coil-shock replacement, need a longer warranty, or do not want air-line and valve components to install and maintain.
- Brand:TCMT
- Fitment:Harley Touring models, 1994–2025
- Adjustment:Height-adjustable air suspension
- Lowering range:2–3 inches with air released
- Fittings:Nickel-plated brass, high-flow push-to-connect
- Valve block:Manifold-style dump valve
- Package contents:One air ride kit
- Manufacturer warranty:90 days
Our verdict“Pick the TCMT kit if adjustable stance matters more than the simpler tuning of a coil shock, after confirming model-year fitment.”
Universal 190 mm Adjustable Motorcycle Shock Absorber
This compact shock is aimed at a different buyer than the Harley-focused options in this roundup: its 190 mm mounting distance suits some scooters, mopeds, electric vehicles, and mini motorcycles, not full-size touring setups. An adjustment knob changes spring pressure, giving owners a basic way to tailor the feel to their vehicle without the extensive controls found on the Mofun remote-reservoir shocks. The aluminum alloy body and stainless steel spring provide a lightweight-material combination, but the listing does not establish fitment for every vehicle described as universal. Its stated maximum-load figure is also ambiguous, shown as “1200LB/N,” so I would not use that number to make a load-safety decision. This is a niche small-vehicle replacement, not a lower-cost substitute for the Legends Revo-A or other full-size motorcycle systems.
Pros:- 190 mm mounting distance targets compact vehicles that need a short shock.
- Spring-pressure adjustment knob allows basic tuning.
- Aluminum alloy body and stainless steel spring use corrosion-resistant materials.
- Designed for several small-vehicle categories, including scooters and mopeds.
Cons:- Universal fit does not confirm compatibility with every listed vehicle.
- The stated maximum-load unit is ambiguous as “1200LB/N.”
- Single-shock pack may not provide a matched pair for applications requiring two.
Best for: Owners of scooters, mopeds, electric vehicles, or mini motorcycles whose original shock uses a 190 mm mounting distance and compatible mounting hardware.
Not ideal for: Full-size motorcycle and touring owners, or anyone who needs confirmed vehicle-specific fitment and a clearly stated load rating before purchase.
- Brand:Bediffer
- Fitment:Universal listing for scooters, mopeds, electric vehicles, and mini motorcycles
- Mounting distance:190 mm (7.48 inches)
- Maximum load:Listed as 1200 lb/N; unit is ambiguous
- Materials:Aluminum alloy body and stainless steel spring
- Pack quantity:1
- Style:Modern
Our verdict“Consider this shock only for a small vehicle with a verified 190 mm fit, not as an alternative to full-size cruiser or touring suspension.”
Legends Revo-A Adjustable FL Coil Suspension, 13 in.
Hand-adjustable preload and six external rebound settings give the Revo-A more tuning control than the Progressive Suspension 412-4037C, which adjusts preload but does not list rebound control. That distinction matters to touring riders who want to tune spring support and shock response separately for their weight and riding style. The 13-inch length, standard spring rate, and design focused on plush control with bottoming resistance make it a more feature-rich coil option than a basic replacement shock, while avoiding the ride-height changes of the TCMT air kit. Spherical bearings support installation and alignment, and the listed lifetime warranty adds a long-term ownership benefit. The tradeoffs are Harley-specific fitment that varies by year and the absence of detailed installation instructions in the product information; buyers should verify compatibility before ordering.
Pros:- Six external rebound settings provide more damping adjustment than the Progressive 412-4037C.
- Preload adjusts by hand without tools.
- Designed for a plush, controlled ride with resistance to bottoming out.
- Spherical bearings support installation and alignment; listed with a lifetime warranty.
Cons:- Fitment depends on the specific Harley-Davidson model and year.
- The product information does not provide detailed installation instructions.
- Coil design does not offer the ride-height adjustment of the TCMT air suspension kit.
Best for: Harley-Davidson Touring riders who want a 13-inch coil setup with tool-free preload adjustment and multiple rebound settings for tuning.
Not ideal for: Riders who need adjustable ride height, universal fitment, or detailed installation guidance supplied with the product listing.
- Brand:Legends
- Model number:1310-1741
- Length:13 inches
- Spring rate:Standard
- Adjustment:Hand-adjustable preload; six external rebound settings
- Installation:Spherical bearings on top and bottom
- Vehicle fitment:Various Harley-Davidson Touring models; fitment varies by model year
- Warranty:Lifetime
Our verdict“Choose the Revo-A for a touring coil suspension with useful rebound tuning, provided its 13-inch length fits your motorcycle.”
Mofun 12-inch Remote Reservoir Rear Shocks for Harley Dyna and Sportster
For riders who want to adjust damping in more than one direction, this pair offers 18 compression settings and 33 rebound settings, plus preload adjustment. That is a broader tuning menu than the Legends Revo-A’s six rebound settings, though the Revo-A is listed for Harley Touring models while this Mofun set targets Dyna and Sportster fitments. Its remote-reservoir monotube design and progressive-rate springs are intended to support tuning across different rider, passenger, and gear loads. At 12 inches, it also differs from the 13-inch Revo-A and the 11-inch Progressive shock, so length and model-year compatibility need checking before purchase. The package includes two shocks and adjustment hardware, but buyers should confirm the detailed fitment list; reports of oil or grease on packaging point to a possible handling or storage issue.
Pros:- 18 compression and 33 rebound settings offer broad damping adjustment.
- Preload adjustment adds another way to tune for rider, passenger, and gear loads.
- Progressive-rate springs and remote-reservoir monotube construction are designed for adjustable control.
- Includes a pair of shocks, aluminum standoffs, washers, and a preload adjustment tool.
Cons:- Fitment must be checked against the detailed list for the exact model and year.
- Oil or grease may appear on the packaging after storage or transport.
- The multiple adjustment ranges may be unnecessary for riders seeking a basic replacement.
Best for: Dyna or Sportster owners within the listed model years who want extensive compression and rebound adjustment for changing loads or preferred ride feel.
Not ideal for: Harley Touring owners, riders who want a simpler setup, or anyone whose motorcycle is not confirmed on the detailed compatibility list.
- Shock length:12 inches (305 mm)
- Compatible models:Harley Dyna 1991–2017; Sportster 1988–2022
- Damping adjustment:18 compression levels; 33 rebound levels
- Shock type:Fully adjustable monotube with remote reservoir
- Spring:Progressive-rate
- Preload:Adjustable
- Package includes:2 shocks, 8 aluminum standoffs, 4 flat washers, and 1 billet aluminum preload adjustment tool
Our verdict“Choose the Mofun pair for a compatible Dyna or Sportster when damping adjustability is the priority, rather than the Revo-A’s Touring-focused fitment.”
Progressive Suspension 412-4063B Rear Shock, 11.5-Inch Standard Low Buck
The 11.5-inch extended length gives this 412 a lower-profile option than the 12-inch Progressive Suspension 412 Series Heavy-Duty Rear Shock, making it a better fit for riders whose setup calls for the shorter shock. Its progressive-rate spring and nitrogen-charged, velocity-sensitive damping are designed to respond across changing loads and road inputs, while the five-position cam adjuster lets riders change preload without replacing the shock. Compared with the 12-inch heavy-duty model, this version emphasizes length and standard configuration rather than a stated heavy-duty spring. The double-wall steel body is a solid construction detail, but this remains a vehicle-specific rear component, not a universal upgrade. Check fitment and ride-height needs before choosing it; riders needing greater load capacity should investigate the heavy-duty 412 instead.
Pros:- 11.5-inch extended length suits applications requiring a shorter rear shock.
- Five-position cam-style preload adjuster accommodates different loads.
- Progressive-rate spring and multistage damping are designed to respond to varying road inputs.
- Double-wall steel body.
Cons:- Vehicle-specific fit limits use across motorcycles.
- Standard spring specification may be less suitable than the heavy-duty 412 for consistently high loads.
- Sold as one shock, so buyers should confirm the required quantity for their motorcycle.
Best for: Street-sport motorcycle owners who need an 11.5-inch rear shock and want adjustable preload for occasional changes in rider or cargo load.
Not ideal for: Riders seeking a heavy-duty spring for frequent passenger or luggage loads, or owners whose motorcycle is not confirmed as compatible with this vehicle-specific shock.
- Model:412-4063B
- Position:Rear
- Extended length:11.5 inches
- Material:Steel
- Spring type:Progressive rate
- Preload adjuster:5-position cam style
- Damping:Nitrogen-charged, multistage velocity-sensitive
- Vehicle compatibility:Street-sport motorcycles; vehicle-specific fit
- Items included:1 shock
Our verdict“Choose this 412 if your motorcycle requires an 11.5-inch shock and adjustable preload; choose the 12-inch heavy-duty 412 when carrying substantial loads is the priority.”
Progressive Suspension 412 Series 12-Inch Heavy-Duty Rear Shock
For riders who routinely carry a passenger or luggage, this 12-inch 412 Heavy-Duty stands apart from the 11.5-inch 412-4063B through its explicitly heavy-duty progressive spring. The longer listed length and load-focused spring make it the more relevant choice when those are the priorities, while its five-position preload adjuster provides a way to tune for changing load conditions. Nitrogen-charged, multistage velocity-sensitive damping is designed to keep response consistent; unlike the air-suspension kits elsewhere in this roundup, this is a conventional shock rather than an adjustable air ride system. Its tradeoffs are practical: fit is vehicle-specific, and the product data conflicts on finish, listing black in the title but chrome and steel in the exterior details. Verify both compatibility and finish before ordering.
Pros:- Heavy-duty progressive-rate spring is aimed at greater load demands.
- Five-position cam-style preload adjustment helps accommodate changing loads.
- Nitrogen-charged, multistage velocity-sensitive damping.
- Designed for street-cruiser motorcycle applications.
Cons:- Vehicle-specific fit can rule out otherwise similar motorcycles.
- Product data gives conflicting finish details: black in the title and chrome and steel in the exterior listing.
- At 12 inches, it may not suit applications requiring a shorter shock.
Best for: Street-cruiser owners who regularly ride two-up or carry luggage and whose motorcycle is confirmed to accept this 12-inch heavy-duty shock.
Not ideal for: Riders needing an air-adjustable touring setup, a shorter 11.5-inch shock, or a clearly specified finish without checking with the seller first.
- Model:412-4050B
- Position:Rear
- Extended length:12 inches
- Weight:9.9 pounds
- Material:Steel
- Spring:Heavy-duty progressive rate
- Damping:Nitrogen-charged, multistage velocity-sensitive
- Preload adjuster:5-position cam style
- Fit and finish:Vehicle-specific street-cruiser fit; finish details conflict between black and chrome/steel
Our verdict“Pick this 12-inch 412 for a compatible street cruiser that regularly carries extra weight, but confirm the fit and finish before purchase.”
How We Picked
I compared the 12 options by the decisions that most affect a suspension purchase: bike and model-year fitment, shock type, length, adjustment approach, stated load or touring focus, and the information available to judge installation and upkeep. I gave more weight to clearly defined applications and useful adjustment than to broad claims; a part that appears versatile on paper is a poor choice if its dimensions or mounting points do not match the motorcycle.
The ranking favors options with a clear use case and a practical balance of fit, control, and setup flexibility. The Legend REVO-A leads as a strong adjustable coil-shock choice, while the air systems rank well for riders who value load or ride-height changes but are more dependent on exact compatibility and air-system maintenance. The Progressive 412 variants stand out for their more conventional, differentiated lengths and configurations. I do not treat these products as interchangeable, and I cannot confirm fitment for a particular motorcycle without its exact year, model, and configuration.
| motorcycle suspension system | Brand |
|---|---|
| GELUOXI Rear Air Ride Suspensi | GELUOXI |
| TCMT Remote Reservoir Rear Sus | TCMT |
| Woosphy Rear Air Suspension Ki | Woosphy |
| Legend Suspension REVO-A Adjus | Legends |
| Legends Aero Air Suspension fo | Legends |
| Progressive Suspension 412-403 | Progressive Suspension |
| TCMT Rear Air Ride Suspension | TCMT |
| Universal 190 mm Adjustable Mo | Bediffer |
| Legends Revo-A Adjustable FL C | Legends |
| Mofun 12-inch Remote Reservoir | — |
| Progressive Suspension 412-406 | — |
| Progressive Suspension 412 Ser | — |
Factors to Consider When Choosing Best Motorcycle Suspension Systems
Choosing a rear suspension system is a fitment and use-case decision before it is a brand decision. I would start with the motorcycle’s exact specifications, then decide whether adjustable ride height, load support, ride comfort, or a straightforward replacement matters most.
Match Fitment Before Comparing Features
Use the motorcycle’s exact year, model family, trim, and any prior suspension changes to check compatibility. A listing that covers a broad range of Touring years may still exclude a specific configuration or require extra parts. Confirm the shock’s mounting style, length, and clearance against the motorcycle’s service information and the manufacturer’s fitment chart. Do not assume a universal shock fits just because its eye-to-eye length looks close; stroke, spring rate, and mount width also affect safe operation. This is especially relevant to the 190 mm universal option, which calls for measurement and verification rather than a name-based match. If the bike has been lowered or modified, check the current setup instead of relying only on the original model specification.
Choose Air or Coil Based on How You Ride
Air suspension can make it easier to alter support or ride height as passenger and luggage loads change, which appeals to touring riders with variable setups. That convenience comes with an air circuit and related components that require correct installation and periodic attention. Coil shocks use a spring and damping arrangement, so they avoid the air-system-specific upkeep but may offer less convenient ride-height adjustment. A rider who carries changing loads should compare air-system controls and adjustment range with the coil shock’s spring and preload provisions. Someone riding mostly solo on a consistent route may prefer the simpler routine of a conventional coil setup. Choose the mechanism around your real load changes, not the assumption that more adjustment always means a better ride.
Treat Shock Length as a Handling Choice
Length affects more than seat height: it can change suspension travel, ground clearance, cornering clearance, and the motorcycle’s stance. The Progressive 412 options in this roundup span 11, 11.5, and 12 inches, while the Legend REVO-A listing is 13 inches, so these are not simple substitutes. A shorter shock may suit a low-profile build, but reduced travel can leave less room to absorb sharp impacts. A longer shock may change reach to the ground and how the motorcycle steers, especially if the front suspension remains unchanged. Check the manufacturer’s intended length for the bike and consider front-to-rear balance before altering the rear alone. Do not select a shock by appearance without checking travel and clearance implications.
Match Spring Support to Rider, Passenger, and Cargo
Suspension that feels comfortable under one rider can sit too low or use too much travel with a passenger and luggage. Look for the manufacturer’s load guidance and adjustment method rather than guessing from a “heavy-duty” label alone. Preload changes can help set sag for a load, but they do not automatically change the spring’s underlying rate or correct a mismatched shock. Frequent two-up touring may justify a setup designed for greater load support or easy adjustment between solo and loaded rides. For mostly solo use, a stiffer setup can create a harsher ride without adding a useful benefit. Consider your usual riding load, not only the heaviest trip you take once a year.
Account for Installation and Ongoing Care
Before buying, check whether the kit includes the hardware, controls, and instructions required for your motorcycle, and whether installation calls for specialized tools or professional help. Air systems add connections and components that need correct routing and leak checks; coil shocks are mechanically simpler, though installation still affects alignment and safe operation. Ask what routine inspection the manufacturer recommends and whether replacement parts are available. A low-complexity part may be a better ownership fit if you prefer minimal adjustment and upkeep. Conversely, a more involved system can make sense when its adjustability solves a real loading or ride-height problem. Budget time for setup and verification, not just the initial installation.
Pay for Adjustability Only When You Will Use It
Remote reservoirs and adjustable damping can offer more setup control, but their value depends on whether you can tune the suspension to suit your riding and know when to make changes. A rider on varied roads or changing loads may benefit more than someone who keeps one setup for short, predictable trips. Compare the adjustment range and instructions, not just the presence of a reservoir or an “adjustable” label. A straightforward shock with the correct length and spring support can outperform a more elaborate option that is poorly matched or left incorrectly set. Premium spending makes sense when the added control addresses a specific need and fits the bike without compromise. If the intended benefit is unclear, prioritize compatibility, load support, and a suitable shock length.
Frequently Asked Questions
Can I install a Touring air suspension kit on any Harley-Davidson Touring model?
No. The kits in this roundup list different model-year ranges, and the shared Touring label does not establish that every trim or configuration is compatible. Check the specific product fitment chart against the motorcycle’s year and exact model, and confirm mounting points and any required hardware. Prior suspension changes can also affect clearance or installation. If the manufacturer’s fitment information is unclear, ask the seller or a qualified shop before ordering.
Should I choose air suspension or coil shocks for a bike that carries a passenger?
Either type can suit two-up riding if its load capacity and setup match the motorcycle and combined load. Air systems can make support or ride-height adjustments more convenient when the bike alternates between solo and loaded use, while coil shocks offer a more conventional arrangement. Check the manufacturer’s load guidance and adjustment method rather than relying on the system type alone. A coil shock with the wrong spring support may still sag, and an air kit will not correct an unsuitable fit. For frequent passenger rides, prioritize the correct spring or pressure setup and safe suspension travel.
Will a shorter rear shock make my motorcycle easier to handle?
A shorter shock can lower the rear, but that does not guarantee easier handling. It may reduce suspension travel and cornering clearance, and it can alter chassis geometry and steering response. The 11-, 11.5-, 12-, and 13-inch options in this roundup serve different fit and stance needs, so length should be checked against the motorcycle’s intended setup. Consider seat reach alongside ground clearance and the way the bike behaves under braking and in corners. If lowering is the main goal, verify the full front-and-rear setup rather than changing the rear alone.
Is a universal 190 mm shock a safe replacement if its length matches my current shock?
Matching length alone is not enough to confirm a safe fit. You also need compatible mounting widths and hardware, suitable travel, spring support, and clearance through the suspension’s full movement. A universal listing may require adaptation or may not suit a particular motorcycle’s weight and geometry. Compare the measurements with the bike’s service specifications and the shock maker’s requirements before purchase. If any dimension or load rating is uncertain, use a motorcycle suspension specialist to check the fit.
Do remote reservoirs or adjustable shocks make sense for everyday road riding?
They can, but the benefit depends on whether their adjustment options address a real difference in load, road surface, or riding pace. Remote reservoirs and adjusters add setup choices that may be useful for varied conditions, yet they do not automatically improve comfort if left poorly set. For steady commuting or consistent solo rides, a correctly matched conventional shock may be easier to own. Check what each adjustment changes and follow the manufacturer’s tuning guidance. Choose extra adjustability when you expect to use it, not just because it appears on the specification list.
Conclusion
For the broadest mix of adjustment and a conventional coil-shock format, I would start with the Legend Suspension REVO-A as the best overall choice, provided its 13-inch length matches the bike. Riders seeking a more straightforward value-oriented replacement should compare the Progressive Suspension 412 options by their exact length and intended load, rather than treating them as identical. For a premium air-based setup on a compatible Touring model, the Legends Aero Air is the standout; riders who change between solo and loaded travel should also compare the GELUOXI, Woosphy, and TCMT air kits by verified fitment and included controls. A beginner may find a correctly matched Progressive 412 coil shock easier to understand and maintain than an air system, while a Dyna or Sportster owner should focus on the Mofun remote-reservoir shocks only after confirming exact compatibility. For custom builds, the 190 mm universal shock is a specific-measurement option, not a shortcut around fitment checks. The best choice is the one that matches your motorcycle, load, and desired adjustment without giving up safe travel or clearance.
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