SunRace CS-M40 Cassette — 7-Speed, 11–34T (UCP)

The SunRace CS-M40 cassette is a durable, wide-range 7-speed MTB cassette designed for dependable shifting and everyday reliability on mountain, hybrid, and commuter bikes.

Built with SunRace Super Fluid Drive™ technology, the CS-M40 provides smooth, predictable gear changes and improved chain engagement—ideal for recreational riding and service replacement scenarios. Steel cogs and a steel lockring deliver excellent wear resistance, making this cassette well suited for high-mileage use and mixed conditions.

With a generous 11–34T range, the CS-M40 offers easy climbing gears for hills while maintaining practical spacing for casual trail and path riding. It installs on standard Shimano HG-compatible freehub bodies and serves as a functional equivalent to popular Shimano 7-speed cassettes.

Product Details

• 7-speed MTB cassette

• Super Fluid Drive™ technology for smooth, reliable shifting

• Durable steel cogs and lockring

• Approx. 310g

• Shimano equivalent: CS-HG41 / CS-HG20

Specifications

• Speed: 7-Speed

• Gear Range: 11–34T

• Cog Sequence: 11, 13, 15, 18, 22, 28, 34

• Color: UCP

• Freehub Compatibility: Shimano HG

Best For

• 7-speed mountain, hybrid, and commuter bikes

• Wide-range gearing for hills and mixed terrain

• Service replacements and drivetrain refreshes

• Riders prioritizing durability, compatibility, and value