A strong MTB coil shock pairs the correct eye-to-eye length and stroke with a spring suited to your rider weight and terrain, making it a practical choice for downhill, enduro, and other riders seeking coil suspension. This roundup includes premium RockShox dampers with adjustable compression and bottom-out control, plus more basic replacement shocks with several length or spring options. The specifications vary widely: listed eye-to-eye lengths include 150, 190, 210, and 225mm, while some listings provide spring capacities or damping controls and others leave key details unclear.
Check your frame’s shock dimensions and mounting style before choosing; a shock that looks similar may not fit. Use the comparison to narrow choices by riding use, adjustability, and the fit information each product actually supplies.
RockShox Vivid Coil Ultimate DH RC2 is the leading choice for riders seeking a detailed downhill coil shock. Its listing specifies a 225x75mm size, trunnion mount, adjustable low- and high-speed compression, and five adjustable bottom-out settings. Those controls make it the strongest match here for aggressive riding and tuning, provided those dimensions and mount match your frame.
For a different specified size, the 210x55mm RockShox Vivid Coil Ultimate RC2T also offers separate compression adjustments and adjustable bottom-out control.
Our Top Picks
Best OverallThe 225x75mm trunnion-mount coil shock specifies adjustable low- and high-speed compression plus five bottom-out settings for downhill tuning.
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Best Compression TuningIts 210x55mm size and separate low- and high-speed compression controls provide detailed adjustment, with five bottom-out settings.
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Best Rebound RangeMade for downhill mountain biking, it lists nine-speed rebound tuning, compression adjustment, and a 190x50mm option.
View on Amazon- Most Adjustments MEROCA RCT-2 Shock
Compare the listed coil shocks and fit details
| # | Product | Material Type | Compatible with Vehicle Type | Buy |
|---|---|---|---|---|
| 1 | 1. RockShox Vivid DH RC2Best Overall | Multi | Bicycle | View on Amazon |
| 2 | 2. RockShox Vivid Ultimate RC2TBest Compression Tuning | Multi | RV | View on Amazon |
| 3 | 3. BUCKLOS GRAVO Coil ShockBest Rebound Range | Aluminum, Carbon Steel | Mountain Bike | View on Amazon |
| 4 | 4. MEROCA RCT-2 ShockMost Adjustments | Aluminum | Bicycle, Motorcycle | View on Amazon |
| 5 | 5. JFOYH EXA Form 291RSelectable length and spring options | CNC alloy | Scooter | View on Amazon |
| 6 | 6. Soulvion 150mm Coil-Oil ShockAdjustable damping for trail rides | Aluminum, Steel | Bicycle, Downhill Bikes, Trail Bikes | View on Amazon |
| 7 | 7. CNC Hydraulic Rear ShockMulti-length replacement shoppers | Metal | Bicycle | View on Amazon |
| 8 | 8. Quality KS Kind K Speed 260Simple preload-adjustable MTB builds | — | — | View on Amazon |
| 9 | 9. Chooee 190mm Rear ShockCorrosion-resistant coil replacements | Aluminum | Bicycle, Scooter | View on Amazon |
| 10 | 10. Tongze 180mm ShockHigh-load utility builds | Steel, Aluminium Alloy | ATV, Bicycle, Go Kart, Motorcycle… | View on Amazon |
Detailed Reviews: Best Coil Shock Mtb

#1 · Best Overall
1. RockShox Vivid DH RC2
- Material Type: Multi
- Compatible with Vehicle Type: Bicycle
Best for: Trunnion-mount downhill tuning.
Why it ranks #1: The 225x75mm trunnion-mount coil shock specifies adjustable low- and high-speed compression plus five bottom-out settings for downhill tuning.
A trunnion body eyelet sets the RockShox Vivid Coil Ultimate DH RC2 apart for downhill frames requiring that mount. Its separate low- and high-speed compression adjustments avoid cross-talk, and five adjustable bottom-out settings let riders tune end-stroke resistance for aggressive descents.
The RC2 damper separates low-speed from high-speed compression tuning, allowing each setting to be adjusted without cross-talk. The adjustable bottom-out dial offers five settings for added control near the end of travel, while TouchDown damping is described as plush off the top and supportive through travel. Its 225x75mm dimensions and trunnion body eyelet define key compatibility requirements. Coil construction supplies the listed spring format for riders seeking a supple, supportive feel on downhill terrain.
- Independent low- and high-speed compression adjustments
- Five adjustable bottom-out settings
- 225x75mm dimensions
- Trunnion body eyelet mount
- The trunnion mount and 225x75mm dimensions restrict fit to frames requiring that configuration.
Skip it if you need a 210x55mm shock with a standard eyelet; RockShox Vivid Coil Ultimate RC2T lists those dimensions.
This suits downhill riders with a frame requiring a 225x75mm trunnion shock and seeking independent compression and end-stroke tuning. Confirm mount and dimensions first; those requirements define where this model fits.
Full product details
| Brand | RockShox |
|---|---|
| Compatible with Vehicle Type | Bicycle |
| Included Components | Rear Shocks |
| Item Weight | 1.5 pounds |
| Manufacturer | RockShox |
| Part Number | 00.4118.550.003 |
| Manufacturer Warranty Description | Limited Warranty |
| Material | Multi |
| Model Number | RS-VIVC-UDH-D1 |
| Style | Modern |
| Style Name | Modern |
Listed on Amazon as: RockShox Vivid Coil Ultimate DH RC2 Rear Shock 225x75mm Trunnion Mount
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#2 · Best Compression Tuning
2. RockShox Vivid Ultimate RC2T
- Material Type: Multi
- Compatible with Vehicle Type: RV
Best for: Precision downhill suspension tuning.
Why it ranks #2: Its 210x55mm size and separate low- and high-speed compression controls provide detailed adjustment, with five bottom-out settings.
Separate, numbered low- and high-speed compression adjustments without cross-talk distinguish the RockShox Vivid Coil Ultimate RC2T. That control lets downhill riders tune two compression ranges independently, while adjustable bottom-out cushioning adds five settings for managing the final 20 percent of shock travel.
The RC2T damper separates low-speed and high-speed compression adjustments, so a change to one setting does not cross over to the other. Five adjustable bottom-out settings target cushioning in the final 20 percent of travel, giving riders a distinct way to tune end-stroke behavior. TouchDown damping is described as sensitive off the top yet stable and supportive through travel. The 210mm eye-to-eye length and 55mm stroke are specific fit dimensions to compare with the frame’s requirements.
- Independent, numbered LSC and HSC adjustments
- Five adjustable bottom-out settings
- 55mm stroke and 210mm eye-to-eye dimensions
- TouchDown damping described as sensitive and supportive
- Its 210mm eye-to-eye and 55mm stroke restrict it to frames requiring those dimensions.
Skip it if you need a 225x75mm trunnion-mount shock; RockShox Vivid Coil Ultimate DH RC2 lists that configuration.
This is for downhill riders seeking independent compression tuning and adjustable end-stroke cushioning. Its 210x55mm dimensions and 12.7mm eyelet diameter make frame and mounting compatibility essential before purchase.
Full product details
| Brand | RockShox |
|---|---|
| Compatible with Vehicle Type | RV |
| Included Components | Rear Shocks |
| Item Weight | 1.5 pounds |
| Manufacturer | RockShox |
| Part Number | 00.4118.549.004 |
| Manufacturer Warranty Description | Limited Warranty |
| Material | Multi |
| Model Number | RS-VIVC-ULT-D1 |
Listed on Amazon as: RockShox Vivid Coil Ultimate RC2T Rear Shock – 210 x 55mm, Reb 55 / Comp
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#3 · Best Rebound Range
3. BUCKLOS GRAVO Coil Shock
- Material Type: Aluminum, Carbon Steel
- Compatible with Vehicle Type: Mountain Bike
Best for: Aggressive downhill tuning.
Why it ranks #3: Made for downhill mountain biking, it lists nine-speed rebound tuning, compression adjustment, and a 190x50mm option.
Nine-speed rebound tuning is the key draw of the BUCKLOS GRAVO, letting downhill riders select rebound behavior for steep slopes, rocky trails and fast, aggressive descents. A compression damping regulator adds another adjustment point, while the heavy-duty 550-pound coil spring and adjustable air pressure broaden the setup options.
The compression damping regulator and nine-speed rebound tuning let riders adjust two aspects of shock behavior for varied downhill terrain. BUCKLOS lists adjustable air pressure from 120 to 160 PSI alongside a 550-pound coil spring, giving setup another stated parameter. Multiple length options are listed, from 190L to 265L, so riders can consider more than one eye-to-eye size. The shock has no lockout design, making it a fit for riders prioritizing damping adjustment rather than a lockout function.
- Nine-speed rebound damping adjustment
- Compression damping regulator
- 550-pound coil spring
- Adjustable air pressure from 120 to 160 PSI
- The no-lockout design excludes riders who require a lockout function.
Skip it if you require a lockout function; the RockShox Vivid Coil Ultimate RC2T offers compression adjustments without the listed no-lockout limitation.
Choose the GRAVO if downhill use and hands-on rebound and compression tuning are priorities. Its multiple length options call for careful size matching, and riders who depend on a lockout should select a different shock.
Full product details
| Brand | BUCKLOS |
|---|---|
| Compatible with Vehicle Type | Mountain Bike |
| Included Components | Rear Shock Absorber |
| Manufacturer | BUCKLOS |
| Part Number | GRAVO |
| Manufacturer Warranty Description | No |
| Material | Aluminum, Carbon Steel |
| Model Number | GRAVO |
| Style | Modern |
| Style Name | Modern |
Listed on Amazon as: BUCKLOS MTB Coil Spring Rear Shock 190L50mm Suspension Absorber
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#4 · Most Adjustments
4. MEROCA RCT-2 Shock
- Material Type: Aluminum
- Compatible with Vehicle Type: Bicycle, Motorcycle
Best for: Four-way enduro setup.
Why it ranks #4: Its four controls cover rebound, compression, preload, and 200–300 PSI air pressure; the listing also specifies a 550LBS/in coil spring.
Four independent controls—rebound, compression, preload and air pressure—make the MEROCA RCT-2 the most explicitly adjustable setup here. Riders can tune its response for technical trails or downhill sprints, while the 550-pound, 9mm-thick coil spring is specified for enduro, downhill and e-mountain-bike use.
Separate rebound, compression and preload controls give riders multiple ways to change shock response, while adjustable air pressure from 200 to 300 PSI adds another setup variable. The 550-pound spring rating and 9mm spring thickness provide stated capacity details for buyers assessing aggressive off-road use. MEROCA lists bicycle and motorcycle compatibility, including full-suspension and downhill bikes in its features. The 210mm length is a fit consideration, so matching frame dimensions remains important before installation.
- Rebound, compression and preload adjustment
- Adjustable air pressure from 200 to 300 PSI
- 550-pound spring rating
- 9mm-thick coil spring
- The listed 210mm length limits fit to applications requiring that size.
Skip it if you need a shock with a specified eye-to-eye and stroke pair of 210x55mm; RockShox Vivid Coil Ultimate RC2T supplies both dimensions.
This suits enduro and downhill riders who want several adjustment controls and a stated 550-pound spring for a compatible setup. Its 210mm length and listed 200–300 PSI range are important fit and setup considerations.
Full product details
| Brand | MEROCA |
|---|---|
| Compatible with Vehicle Type | Bicycle, Motorcycle |
| Included Components | Comes with housing |
| Manufacturer | MEROCA |
| Part Number | RCT-2 |
| Manufacturer Warranty Description | 6 mouth |
| Material | Aluminum |
| Model Number | RCT-2 |
| Style | Performance |
| Style Name | Performance |
Listed on Amazon as: MEROCA 210mm Adjustable Air Spring Coil Over Rear Shock Absorber
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#5
5. JFOYH EXA Form 291R
- Material Type: CNC alloy
- Compatible with Vehicle Type: Scooter
Best for: Selectable length and spring options.
Why it ranks #5: It offers several eye-to-eye lengths—125, 150, 165, and 190mm—and listed spring capacities of 650, 1000, or 1500 pounds.
The JFOYH EXA Form 291R lists four eye-to-eye lengths and three spring ratings, giving replacement shoppers multiple size and stiffness combinations to evaluate. Its adjustable-damping description and stated use across MTB, e-bike and scooter applications make configuration matching the central buying decision.
Options listed at 125, 150, 165 and 190mm eye-to-eye let buyers compare the shock against their frame’s required length; 650-, 1,000- and 1,500-pound spring choices add a separate stiffness decision. JFOYH describes adjustment as simple and practical, and says the shock reduces vehicle impacts to improve ride comfort and the service life of body parts. The listing emphasizes checking both length and spring stiffness, so selecting a configuration is key to avoiding a mismatch.
- Four listed eye-to-eye lengths
- 650-, 1,000- and 1,500-pound spring options
- Adjustable-damping description
- Listed for MTB, e-bike and scooter applications
- The listing stresses choosing the correct length and spring stiffness to avoid compatibility problems.
Skip it if you want a stated 9-speed rebound control; BUCKLOS GRAVO lists that adjustment for downhill setup.
This is for buyers whose frame and riding needs match one of the listed lengths and spring ratings. Compare those two requirements carefully before ordering; the supplied details do not provide mounting dimensions.
Full product details
| Brand | JFOYH |
|---|---|
| Compatible with Vehicle Type | Scooter |
| Manufacturer | JFOYH |
| Part Number | JFOYH Bike |
| Material | CNC alloy |
| Model Number | JFOYH Bike |
| Style | Modern |
| Style Name | Modern |
Listed on Amazon as: JFOYH EXA Form 291R Rear Shock, Adjustable Damping Suspension for MTB, E-Bike & Scooter, 125/150/165/190mm Eye-to-Eye, 650/1000/1500 lbs
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#6
6. Soulvion 150mm Coil-Oil Shock
- Material Type: Aluminum, Steel
- Compatible with Vehicle Type: Bicycle, Downhill Bikes, Trail Bikes
Best for: Adjustable damping for trail rides.
Why it ranks #6: This 150mm coil-and-oil shock lists a 650LBS capacity, adjustable damping, mounting hardware, and a two-year manufacturer warranty.
A red rebound adjustment knob marked plus and minus gives the Soulvion coil-and-oil shock an intuitive way to tune rebound speed. Its hydraulic damping and stated 650-pound capacity make it a candidate for compatible mountain bikes, downhill bikes and trail bikes where bump filtering and adjustable response matter.
The coil-and-oil construction pairs a spring with hydraulic damping, which Soulvion says filters bumps and impacts to improve riding comfort. The red, plus/minus-marked knob gives riders a direct way to change rebound speed without interpreting an unmarked control. Its 150mm size and stated 650-pound capacity provide concrete fit and load details to assess against a bike’s requirements. Included mounting hardware supports installation, though the supplied information does not state the mounting dimensions.
- Coil-and-oil shock construction
- Red knob with plus/minus rebound markings
- Stated 650-pound capacity
- Mounting hardware included
- The listed 150mm size limits use to applications requiring that length.
Skip it if you need separately adjustable low- and high-speed compression; RockShox Vivid Coil Ultimate RC2T lists both controls.
This fits riders looking for a 150mm coil-and-oil shock with an easy-to-read rebound control for a compatible trail, downhill or e-bike application. Check required mounting dimensions and capacity before installation.
Full product details
| Brand | Soulvion |
|---|---|
| Compatible with Vehicle Type | Bicycle, Downhill Bikes, Trail Bikes |
| Included Components | Mounting Hardware, Shock Absorber |
| Manufacturer | Soulvion |
| Part Number | Bsa-1000 |
| Manufacturer Warranty Description | 2 Year Manufacturer |
| Material | Aluminum, Steel |
| Model Number | Bsa-150-650 |
| Style | Adjustable Coil Spring Shock |
| Style Name | Adjustable Coil Spring Shock |
Listed on Amazon as: Coil+Oil Shock Absorber Adjustable Damping Hydraulic Rear Shocks,150MM,650LBS Capacity for MTB/E-Bike/Scoters
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#7
7. CNC Hydraulic Rear Shock
- Material Type: Metal
- Compatible with Vehicle Type: Bicycle
Best for: Multi-length replacement shoppers.
Why it ranks #7: The listing provides several eye-to-eye options, including 190x50mm, 750- or 1000-pound loads, and mounting screws.
Several listed eye-to-eye sizes make the CNC rear shock a flexible replacement candidate: supplied options include 125, 150, 165 and 190mm configurations. The product also lists 750- or 1,000-pound loads, giving mountain-bike and e-bike modifiers specific size and spring-capacity choices to compare with their setup.
The listed size and load combinations let buyers narrow the shock by required eye-to-eye length and spring rating rather than relying on a single configuration. CNC gives bushing dimensions of 8mm by 24mm, which helps assess mounting compatibility. The application description covers mountain bikes, electric bikes, scooters and other bike modifications. Two mounting screws are included with the shock, supporting installation, while the hydraulic rear-suspension description identifies the shock type rather than a coil-specific adjustment range.
- Multiple listed eye-to-eye sizes
- 750- and 1,000-pound load options
- 8mm by 24mm bushing dimensions
- Two mounting screws included
- The supplied information does not specify damping adjustment controls.
Skip it if you want explicitly listed rebound and compression controls; BUCKLOS GRAVO specifies both for downhill tuning.
Consider this CNC shock when a listed size and load combination matches a bicycle or e-bike modification. Verify the exact configuration and bushing fit before installation; the supplied details do not describe adjustable damping controls.
Full product details
| Brand | CNC |
|---|---|
| Compatible with Vehicle Type | Bicycle |
| Included Components | 1 x box, 1x shock absorber, 2x mounting screws |
| Manufacturer | ShenZhenShiShiLiLanTianKeJiYouXianGongSi |
| Part Number | 20020208012 |
| Manufacturer Warranty Description | One-year warranty |
| Material | Metal |
| Model Number | bike rear shock absorber |
| Style | 190mm x 750lbs |
| Style Name | 190mm x 750lbs |
Listed on Amazon as: CNC Mountain Bike Rear Shock 120mm 125mm 150mm 165mm 185mm 190mm 200mm, Bicycle Shock Absorber Hydraulic Rear Suspension Shock for Mtb Mtn ebike Dmn.190mm x750lbs
View on AmazonWhy it ranks #8: This MTB-specific coil shock lists a 165mm fitted length, preloaded adjustment, and an 850-pound spring.
A preload-adjustable 850-pound steel spring is the defining specification of the Quality KS Kind K Speed 260. Its 165mm, or 6.5-inch, fitted length and aluminum-alloy body make the dimensions and basic spring setup clear for buyers replacing a rear coil shock on a dual-suspension mountain bike.
The 165mm fitted length gives a concrete eye-to-eye measurement to match against a frame, while the 850-pound spring rating identifies its stated spring strength. Preload adjustment offers a direct setup control, and the 6061 aluminum body keeps the listed construction specific. Its 22mm adapter and 8mm hole dimensions help assess mounting fit. At 173g, the listed weight is also useful when comparing component specifications, although the supplied description does not list damping controls beyond preload.
- 850-pound steel spring
- Preload adjustment
- 165mm fitted length
- 22mm adapter and 8mm hole dimensions
- Preload is the only adjustment specified in the supplied description.
Skip it if you want separate low- and high-speed compression settings; RockShox Vivid Coil Ultimate RC2T lists independent LSC and HSC controls.
This suits a dual-suspension MTB buyer seeking a straightforward preload-adjustable coil shock with stated mounting dimensions. Match its 165mm length and adapter measurements to the bike; the description specifies no other adjustment controls.
Full product details
| Brand | Quality |
|---|---|
| Color | Gray |
| Item Package Dimensions L x W x H | 7 x 7 x 6 inches |
| Manufacturer | Quality |
| Material | Aluminum Alloy |
| Package Weight | 16 ounces |
| Style | Adjustable |
Listed on Amazon as: Quality KS Kind K Speed 260 ATB Bike Rear Coil Spring Shock for Dual Suspension Mountain Bike MTB
View on Amazon
#9
9. Chooee 190mm Rear Shock
- Material Type: Aluminum
- Compatible with Vehicle Type: Bicycle, Scooter
Best for: Corrosion-resistant coil replacements.
Why it ranks #9: It is listed for mountain bikes and uses a coil spring with hydraulic control, but the supplied details give limited damping adjustment information.
An anodized aluminum-alloy finish gives the Chooee rear shock a specifically stated wear- and corrosion-resistant surface. The coil spring and hydraulic control work together in its listed suspension design, while a range of sizes and a 1,000-pound model rating address varied bicycle and scooter replacement needs.
The one-piece construction combines a coil spring with hydraulic control, providing a defined shock-absorption arrangement rather than a spring alone. Chooee describes the anodized aluminum alloy as wear- and corrosion-resistant, a practical material detail for a component exposed to regular use. Listed size options span 120 to 200mm, and the named configuration is 190mm by 1,000 pounds. The product is listed for mountain bikes, downhill and cross-country softtails, e-bikes and scooters; frame dimensions still determine fit.
- Anodized aluminum-alloy surface
- Coil spring with hydraulic control
- Multiple listed sizes from 120 to 200mm
- Named 190mm by 1,000-pound configuration
- The listed details do not specify adjustable rebound or compression controls.
Skip it if you require separately listed compression and rebound tuning; RockShox Vivid Coil Ultimate RC2T provides those controls.
Choose this Chooee shock if its size and 1,000-pound configuration suit a compatible bike or scooter. Its material and hydraulic-coil construction are stated, but buyers seeking specified damping adjustments should look elsewhere.
Full product details
| Brand | Chooee |
|---|---|
| Compatible with Vehicle Type | Bicycle, Scooter |
| Included Components | Comes with housing |
| Manufacturer | ShenZhen Freeman Bicycle co.,ltd |
| Part Number | CA-rear shock-190*1000 |
| Material | Aluminum |
| Model Number | CA-rear shock-190*1000 |
| Style | Modern |
| Style Name | Modern |
Listed on Amazon as: Chooee Mountain Bike Rear Shock absorber 120mm/125mm/150mm/165mm/185mm/190mm/200mm Bicycle Rear Suspension Shock Absorber 190mmx1000lbs
View on Amazon
#10
10. Tongze 180mm Shock
- Material Type: Steel, Aluminium Alloy
- Compatible with Vehicle Type: ATV, Bicycle, Go Kart, Motorcycle…
Best for: High-load utility builds.
Why it ranks #10: Its 1500-pound maximum load and adjustable coil spring are noted, but the broad vehicle fit and limited MTB-specific sizing make selection less clear.
A stated 1,500-pound maximum load distinguishes Tongze’s 180mm coil shock, giving utility-bike and other listed vehicle owners a clear load-capacity figure to consider. Its 8mm-thick spring and aluminum-alloy-and-steel construction pair that capacity with a durable metal assembly for applications including bicycles, e-bikes, scooters and go-karts.
The 180mm length provides a specific starting point when matching a replacement shock, while the listed 1,500-pound maximum load identifies its stated capacity. Tongze says the steel coil is 8mm thick and combines it with an aluminum-alloy body; the materials are described as wear- and corrosion-resistant. The product description also identifies vibration buffering as a ride benefit. Its broad vehicle compatibility is useful for listed bicycle, ATV, go-kart, motorcycle, snowmobile and UTV applications, but does not replace checking dimensions.
- Stated maximum load of 1,500 pounds
- 8mm-thick coil spring
- Steel and aluminum-alloy construction
- Listed for bicycles, e-bikes, scooters and go-karts
- Only a 180mm length is specified for this model.
Skip it if you need a shock with listed rebound or compression damping controls; BUCKLOS GRAVO specifies both adjustments.
This suits a buyer seeking a high-capacity coil shock for a compatible 180mm application, including listed utility vehicles. Confirm the required shock dimensions and mounting arrangement before choosing it; the supplied details do not give adjustment controls.
Full product details
| Brand | Tongze |
|---|---|
| Compatible with Vehicle Type | ATV, Bicycle, Go Kart, Motorcycle, Snowmobile, UTV |
| Included Components | Comes with housing |
| Manufacturer | Tongze |
| Part Number | TZ203159 |
| Manufacturer Warranty Description | 30-day Warranty |
| Material | Steel, Aluminium Alloy |
| Model Number | 180mm-1500lbs |
Listed on Amazon as: 180mm 1500LBS Mountain Bike Rear Shock Absorber: MTB Rear Shock with Adjustable Coil Spring, Widely Fits for Bicycle/E-Bike/Electric Scooter/Go-kart/Etc
View on AmazonCheck frame fit before choosing a coil shock
A shock’s listed length alone does not confirm that it will fit your frame. The products here span multiple eye-to-eye dimensions: the RockShox Vivid DH RC2 lists 225x75mm and a trunnion mount, while the RockShox Vivid Ultimate RC2T lists 210x55mm. Other listings offer options such as 125, 150, 165, or 190mm, sometimes without a complete set of mounting details.
Confirm your frame’s required eye-to-eye length, stroke, and mount style, then verify hardware dimensions against the shock listing. A mismatch can prevent installation or produce an unsuitable suspension position.
Do not treat broad compatibility claims—such as bicycle, scooter, or e-bike—as proof of frame fit. If the listing omits a measurement you need, clarify it before ordering rather than inferring compatibility from the product title.
Coil adjustability can trade simplicity for setup work
More adjustment options can give riders more ways to tune a shock, but they also require more setup decisions. The RockShox Vivid models list distinct low- and high-speed compression controls and adjustable bottom-out settings; the BUCKLOS GRAVO adds nine-speed rebound tuning and compression adjustment. By contrast, the Quality KS Kind K Speed 260 lists preload adjustment, and several replacement-style shocks provide much less detail about damping controls.
That difference matters when comparing a feature-rich downhill damper with a basic replacement. Before choosing, identify which controls you will actually use and check whether the listing explains them clearly.
A rider seeking multiple specified damping adjustments may prefer a RockShox or BUCKLOS option; someone replacing a shock with fewer tuning requirements may focus first on confirmed dimensions and spring fit.
How to Choose an MTB Coil Shock
Eye-to-eye length, stroke, and mount
Start by matching your frame’s required eye-to-eye length, stroke, and mounting style. The listings include a 225x75mm trunnion-mount RockShox Vivid DH RC2 and a 210x55mm RockShox Vivid Ultimate RC2T; other products offer nominal lengths such as 150, 165, or 190mm. Some provide multiple options, but not every listing gives a complete stroke or mount specification.
Riders replacing a known shock should prioritize exact matching dimensions and hardware. Those choosing among options should verify the frame manufacturer’s required measurements before selecting a length.
Do not assume that two shocks with similar eye-to-eye lengths are interchangeable if their stroke or mount differs.
Spring capacity and rate
Choose a spring specification that suits your rider weight, frame leverage, and intended use, and confirm whether the listing states a spring rate or only a load figure. The products range from the MEROCA RCT-2’s listed 550LBS/in spring to the Soulvion’s 650LBS capacity, the Quality KS Kind K Speed 260’s 850-pound spring, and options reaching 1500 pounds on the JFOYH and Tongze listings. These figures are not necessarily directly comparable because the listings use different wording and may describe different measures.
Riders who already know their required rate should favor a clearly matching specification; buyers who do not should confirm spring compatibility before ordering rather than treating the largest number as best.
Damping and adjustment controls
Compare the controls that are specifically listed and decide whether they suit your riding and setup needs. RockShox Vivid models specify separate low- and high-speed compression adjustment and five bottom-out settings; BUCKLOS lists compression adjustment and nine-speed rebound tuning. MEROCA describes rebound, compression, preload, and air-pressure controls, while the Quality KS Kind K Speed 260 lists preload adjustment.
A rider tackling aggressive downhill terrain and wanting several damping controls may prefer the RockShox options. Someone replacing a simpler shock may value confirmed fit and spring compatibility more than a long control list.
Check the product details carefully: the listings do not describe every adjustment in the same level of detail.
Which MTB Coil Shock Should You Choose?
For aggressive downhill riding with a confirmed 225x75mm trunnion fit, choose RockShox Vivid DH RC2 for its specified compression and bottom-out adjustments. If your frame requires 210x55mm, RockShox Vivid Ultimate RC2T provides a similarly detailed damper in that listed size. Riders who want rebound tuning in a 190x50mm option can consider BUCKLOS GRAVO Coil Shock.
MEROCA RCT-2 Shock suits buyers interested in multiple listed controls, but verify its dimensions and spring compatibility first. For a replacement with several length choices, JFOYH EXA Form 291R lists four eye-to-eye options and multiple capacities.
Before purchasing any model, match eye-to-eye length, stroke, mount, and spring requirements to your frame; if those details are uncertain, confirm them rather than choosing by load rating alone.
Related Buying Guides
Frequently Asked Questions
How do I confirm eye-to-eye length, stroke, and mount type for my frame?
Check your frame manual or manufacturer information for the required eye-to-eye length, stroke, and mounting hardware, then compare each with the shock listing. Confirm mount style and dimensions rather than relying on a similar-looking shock or a load rating. If any measurement or mount detail is unclear, ask the frame or shock manufacturer before ordering.
How should I choose a coil spring rate for my weight and riding style?
Start with the frame or shock manufacturer’s spring-rate guidance for your riding weight and intended use. Consider your preferred sag and riding style, then confirm the spring is compatible with the shock. Do not choose solely from a listed capacity: capacity and spring rate are different details, and the supplied listings do not establish a suitable rate for every rider.
Can I install a coil shock on a frame designed for an air shock?
Only if the frame manufacturer confirms that a coil shock is compatible. Check the required dimensions, mounts, spring clearance, and the frame’s suitability for the different spring and damping characteristics. A matching eye-to-eye length alone does not establish compatibility.
If the frame documentation is unclear, confirm with the manufacturer before replacing the air shock.
Which adjustment controls should I look for?
Choose controls that match the tuning you want and that the specific listing confirms. The editorial picks include models listing low- and high-speed compression adjustments, rebound adjustment, or adjustable bottom-out control. Those features vary by model, so verify the exact shock version and listed controls rather than assuming every Vivid or coil shock has the same adjustments.
What should I verify before ordering a replacement shock?
Verify eye-to-eye length, stroke, mount type, and spring requirements against your frame, then confirm the exact model’s listed adjustments and dimensions. For JFOYH EXA Form 291R, the listing gives four eye-to-eye choices and multiple capacities; choose only after confirming the required fit and spring compatibility. Ask the seller or manufacturer about any missing details.
Final Words
For detailed downhill tuning, the RockShox Vivid Coil Ultimate DH RC2 is the leading choice when its listed 225x75mm dimensions and trunnion mount match your frame. If your frame needs another size, consider the specified 210x55mm Vivid option or the 190x50mm BUCKLOS for rebound tuning. Treat other multi-size listings as options to investigate, not confirmed fits.
Before choosing, verify dimensions, mount, and spring requirements with your frame information.



