SunRace MZ90 12-Speed MTB Cassette, HG-Spline

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 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 Weight-Optimized Design – Incorporates a Light Weight Holes pattern and mounts 7 sprockets on two red anodised aluminium spiders, minimizing weight while maintaining structural integrity and stiffness 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