A 200mm x 57mm rear shock has an eye-to-eye length of about 200mm and a stroke of about 57mm. Among the listed options, the FOX Float DPS Performance at 7.875 x 2.25 inches is the closest direct dimensional match. The other picks include 200mm shocks with different or unspecified stroke measurements, so verify your frame’s required dimensions, mounting hardware, and clearance before buying.
| Product | Best for | Key detail |
|---|---|---|
| FOX Float DPS Performance | Riders seeking a close size match | 7.875 x 2.25 inches |
| Catazer RCP2S 200mm | Adjustable coil-shock setup | Rebound, compression, and preload adjustments |
| DNM DV-23AR | Riders wanting rebound and preload controls | 200mm length; 550lb spring |
| Catazer AO-8RC | Riders considering an air shock | 200mm option; three-stage locking |
| CNC Hydraulic Rear Shock | Buyers comparing multiple lengths | 200mm option listed with 60mm stroke |
FOX Float DPS Performance
This air shock is listed at 7.875 x 2.25 inches, approximately 200 x 57mm. That makes it the closest dimensional match in this selection for a rider specifically searching for a 200mm x 57mm rear shock. Its three-position lever and dual-piston base valve provide compression and rebound control, while the EVOL air sleeve is designed for responsiveness and sensitivity.
Best for: Riders whose frame calls for these dimensions and who want an air shock with a three-position lever. Confirm the manufacturer’s sizing convention and mounting hardware before purchase. The supplied product details do not state the shock’s mounting hardware or frame compatibility.
Catazer RCP2S 200mm Coil Shock
The Catazer RCP2S is a 200mm metal spring shock intended for all-mountain, freeride, and downhill riding. Its listed adjustments include rebound, compression, preload, and air pressure. The 12mm hard-chromed damper shaft and hard-anodized aluminum body are additional construction details.
Best for: Riders who need a 200mm coil-style option and value several adjustment controls. Choose it only if its stroke, spring rate, and mounting dimensions match your bike; the listing does not specify a 57mm stroke. Its 550lb spring rating may not suit every rider or frame setup.
DNM DV-23AR 200mm Shock
This DNM-branded shock is listed with a 200mm length and a 550lb spring. Its external rebound dial lets riders adjust how quickly the shock returns, and a threaded preload collar allows sag adjustment. The supplied product information also describes a 12mm shaft, upgraded from a 10mm shaft on the earlier model.
Best for: Riders looking for a 200mm spring shock with accessible rebound and preload adjustments. It is better suited to buyers who have confirmed that a 550lb spring is appropriate for their setup. The listing does not provide a stroke measurement, so it is not a confirmed 57mm match.
Catazer AO-8RC Lockable Air Shock
The AO-8RC is an air-suspension option with a three-stage locking system. The listing offers several lengths, including 200mm, and gives travel figures for some length options. Its aluminum-alloy construction is described as durable, but the product details do not clearly pair a 200mm eye-to-eye length with a 57mm stroke.
Best for: Riders who prefer an air shock and want a lockout-style adjustment. Verify the exact length-and-travel combination with the seller before choosing the 200mm version. The available specifications do not confirm a 200 x 57mm configuration.
CNC Hydraulic Rear Shock
This hydraulic rear shock is listed in several lengths, including 200mm. Its specifications pair that length with a 60mm stroke, plus a 550lb, 750lb, or 1000lb load option and an 8 x 24mm bushing size. The oil-pressure spring system is described as providing a soft, stable ride.
Best for: Buyers comparing different lengths and load options who can use the listed 200 x 60mm size. It is not an exact 57mm-stroke match, so avoid choosing it if your frame requires precisely 57mm of travel. Check bushing and mount dimensions as well.
Buying Guide: How to Choose a 200mm x 57mm Rear Shock
Does 200mm x 57mm describe length and stroke?
Usually, the first number refers to eye-to-eye length: the distance between the shock’s mounting points. The second refers to stroke: how far the shock shaft compresses. Confirm how your frame manufacturer specifies these measurements, and do not assume that a shock labeled 200mm also has a 57mm stroke.
Why does exact stroke matter?
A different stroke can change suspension movement and may cause clearance or frame-fit problems. The FOX listing’s 7.875 x 2.25-inch size converts to approximately 200 x 57mm. Several other options list a 200mm length but do not confirm 57mm stroke, while the CNC option specifies 60mm.
Should you choose an air or coil shock?
An air shock, such as the FOX or Catazer AO-8RC, uses air-pressure adjustment. Coil options in this selection list spring ratings and, in some cases, preload and rebound adjustments. Compare the shock type and adjustment range with your frame requirements and riding needs; the product listings alone do not establish which setup is right for every bike.
What else should you check before ordering?
- Confirm the exact eye-to-eye length and stroke required by your bike frame.
- Check mounting hardware, bushing width, and bolt diameter against your current shock and frame.
- For coil shocks, verify the spring rating and whether it suits your setup.
- For adjustable shocks, review which controls are actually listed, such as rebound, preload, compression, or lockout.
- Confirm frame clearance and installation requirements with the bicycle manufacturer or a qualified mechanic.
Frequently Asked Questions
Which product listed is closest to 200mm x 57mm?
The FOX Float DPS Performance is listed at 7.875 x 2.25 inches, which is approximately 200 x 57mm.
Is the CNC shock an exact 200 x 57mm replacement?
No. Its listed 200mm option is paired with a 60mm stroke, not 57mm.
Does every 200mm shock fit the same bicycle?
No. Eye-to-eye length alone is not enough to confirm fit. Stroke, mounting hardware, frame clearance, and the bicycle manufacturer’s requirements also matter.
Which listed shocks include adjustment controls?
The FOX has a three-position lever and compression and rebound pistons. The Catazer RCP2S lists rebound, compression, and preload adjustments, while the DNM lists rebound and preload controls. The Catazer AO-8RC lists three-stage locking.
Can a 550lb spring be assumed to fit every rider?
No. A spring rating should be checked against the rider, bike, frame, and intended setup. The supplied listings do not establish a universal spring choice.