• Weight-Optimized Design (597g) – Incorporates a Light Weight Holes pattern and mounts 7 sprockets on two red anodised aluminium spiders, minimizing weight while maintaining structural integrity and stiffness
• Fluid Drive Plus Technology – Proprietary SunRace shifting system enhances chain engagement and gear transitions, delivering crisp, reliable shifts even under load or in muddy trail conditions
• Premium Material Construction – Features 10 high-tensile steel sprockets for durability and 2 lightweight 7075 aluminium sprockets for reduced rotational mass. This combination balances strength and weight for optimal performance
• Ultra-Wide Gear Range (11-51T) – Offers a massive 464% gear range ideal for Gravel, Cross Country, All Mountain, and Enduro riding. The precise gradation ensures smooth transitions between gears for efficient climbing and high-speed descents
• Broad Compatibility – Designed to fit Shimano HG freehub bodies and compatible with Shimano/SRAM 12-speed drivetrains. Not compatible with Shimano Micro Spline or SRAM XD systems

The CSMZ903 is a wide-range 12-speed cassette designed for SRAM XD drivetrains. With a 497g weight range and Fluid Drive Plus tech, it delivers smooth, reliable shifting and solid value for MTB builds. A mix of steel and alloy sprockets ensures durability where it counts.

Key Features:

* Wide-range gearing options for versatile riding
* Fluid Drive Plus for seamless gear transitions
* Compatible with SRAM XD 12-speed systems
* Durable construction with a clean, metallic finish

Technical Specifications:

* Material: Alluminium
* Speeds: 12-speed
* Freehub compatibility: SRAM XD 12x
* Weight: 532g
Item Length: 239
Part Type: Bike Spares
Size: ‎11-51T
Type: Accessories