Description
The SunRace CSM680 8 Speed 11-40T is a wide-ratio cassette built for riders who want easier climbing without losing useful top-end speed. It suits MTB, city, e-bike, and kids’ bikes that use Shimano HG freehub bodies.
SunRace CSM680 8 Speed 11-40T
This cassette uses SunRace’s 8-speed wide-ratio layout with 11-13-15-18-22-28-34-40T gearing. It gives a broad spread for steep climbs and relaxed cruising. The finish keeps the look understated on the bike.
Performance and gearing
The 11-40T range helps riders manage varied terrain with less strain on climbs. In addition, the gear steps stay practical for everyday pedaling and mixed riding. SunRace’s Fluid Drive Plus system supports smoother shifting across the cassette.
Build and weight
The cassette uses a steel spider, steel lockring, and lightweight holes to reduce mass where possible. SunRace lists the average weight at 456 g, which is light for an 8-speed wide-range cassette. That balance of strength and lower weight makes it a solid option for regular riding.
Compatibility and value
The CSM680 works with Shimano HG splined freehubs and pairs with Shimano or SRAM 8-speed drivetrains. It is not compatible with SRAM XD driver bodies. Therefore, it is a practical upgrade for riders who want a simple, durable, and affordable wide-range cassette
