BOLANY Coil Rear Shock Alloy Spring Suspension System
The 550lbs spring strength handles the cumulative demands of motor-assisted climbing and gravity descents without bottoming or losing responsiveness. Alloy construction keeps weight reasonable for e-MTB platforms where battery and motor components already add significant mass. Six distinct travel lengths ranging from 190mm through 265mm cover everything from trail-focused builds to aggressive downhill e-bikes designed for mountain racing. The adjustable mounting interface accommodates modern thru-axle standards and standard pivot designs found on premium e-MTB frames. Sealed bearing interfaces protect against contamination from water crossings and dusty terrain.
Coil Spring Reliability for E-Mountain Bike Riders
Electric riders benefit from coil spring consistency because motor torque creates predictable loads that springs handle better than air at extreme compressions. Unlike air shocks that require seasonal maintenance, coil springs maintain progressive resistance year-round regardless of altitude or temperature. BOLANY coil rear shocks ship ready to install on Specialized, Trek, Cannondale, and other major e-MTB models. Shop the official website now to upgrade your e-mountain bike with proven spring technology and complete compatibility assurance.















AliExpress Shopper –
Everything came quickly, the product corresponds to the description, i recommend it.
AliExpress Shopper –
The truth is, they are very good, the cushioning is very good and soft. It’s just a matter of buying some bushings to adapt the suspension to a regular high-end bicycle. It’s very easy to adapt.
H***n –
Fast shipping, well packaged. This is a great value shock; it is like an improved version of the dnm rcp2s shock. It has a midvalve with proper shim stack both for compression as well as rebound. The shaft is 12mm chrome plated steel and is very strong. The tune (especially rebound) is a bit harsh for my liking (450 lbs), so i removed some shims (0.1mm thick). From factory it is ok; with better oil (maxima plush 3wt) and some tuning of the shim stacks it becomes great. It fits rockshox steel springs. It also sells under the brands: meroca, evosid. Highly recommended!
i***r –
The the the big one was the best of all of the series so i don’t know why it didn’t come to this conclusion as much but it is still one that is still good for the show overall but the other is better overall so i don’t see any reason why they did not make the series more enjoyable to me and the show is a good