Cassette SunRace CSMZ903 12s

Cassette SunRace CSMZ903 12s

The SunRace CSMZ903 12-speed cassette (11-51) offers a wide gear range, perfect for MTB and gravel riding. Designed for Shimano HG freehub bodies, it ensures reliable shifting and long-lasting durability.

Built with a smart mix of lightweight and robust materials: aluminum spider and lock ring (red anodized), Hi-Tensite steel cogs for 1–9, and A7075 aluminum for the larger cogs. With a weight of approx. 497 g (manufacturer info), this cassette combines performance and strength in one.

Specifications:

• Use: MTB / Gravel
• Model: CSMZ903
• Gears: 12
• Freehub: Shimano HG MTB
• Range: 11-51T
• Gradation: 11-13-15-17-19-21-24-28-33-39-45-51
• Compatible chain: 12-speed
• Materials: Spider – aluminum (red anodized); Cogs 1–9 – Hi-Tensite steel; Cogs 10–12 – A7075 aluminum; Lock ring – aluminum (red anodized)
• Weight: approx. 497 g