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Load image into Gallery viewer, Sunrace CSMZ903 12sp Cassette, 11-51t - Black

SKU: CASS0873

Sunrace CSMZ903 12-Speed Cassette 11-51T with 7075 Aluminum Large Cogs, Steel Components, Fluid Drive Plus Technology, Wide-Range Mountain Bike Gear for Shimano HG Freehub Compatibility

Regular price $139.64
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Description
Specifications

Introducing the Sunrace CSMZ903 12-Speed Cassette - the ultimate wide-range upgrade for mountain biking enthusiasts seeking performance, durability, and lightweight design. Crafted with precision engineering and advanced materials, this black 12-speed cassette provides a seamless gear shifting experience and enhanced durability for demanding trail rides.

Materials & Construction:

Built with high-quality, durable components, the Sunrace CSMZ903 features the largest three cogs made from 7075 aluminum, known for its superior strength-to-weight ratio. All other cogs are constructed from hardened steel, ensuring long-lasting performance and resistance to wear. The cassette includes lightweight aluminum lockrings and spacers, reducing overall weight to just 517 grams, without compromising strength.

Performance & Engineering:

Engineered for optimal gear progression, the CSMZ903 offers an expansive 11-51T gear range, ideal for conquering steep climbs and fast descents alike. Its Fluid Drive Plus shift-enhancing design ensures smooth, precise gear changes, minimizing chain skip and maximizing efficiency across terrains. Compatible with Shimano 12-speed drivetrains and HG freehub bodies (8-11 speed), this cassette guarantees compatibility with a wide range of mountain bikes.

Components & Technology:

The cassette utilizes advanced spline technology for secure fitting and minimal inertia, boosting drivetrain response. The combination of aluminum and steel cogs balances lightweight performance with robustness, making it suitable for aggressive trail riding and cross-country adventures. The 7-cog arrangement on aluminum spiders further reduces weight and enhances rigidity.

Style & Use Case:

With its sleek black finish and rugged construction, the Sunrace CSMZ903 is tailored for serious mountain bikers seeking reliable, high-performance gearing. Its wide gear range makes it perfect for difficult climbs and technical trail sections, providing versatility across various terrains and riding styles.

Innovative & Differentiating Features:

- Wide 11-51T gear range for maximum versatility

- Fluid Drive Plus shift technology for smooth gear transitions

- 7075 aluminum large cogs for reduced weight and increased strength

- Compatible with Shimano 12-speed drivetrains and HG freehub bodies

- Lightweight design optimized for aggressive trail riding

Upgrade your mountain bike's drivetrain with the Sunrace CSMZ903 12-Speed Cassette and experience improved shifting, durability, and weight savings. Whether you're tackling steep ascents or fast descents, this cassette delivers the performance and reliability you need to ride confidently.

  • Lightweight 12-speed mountain bike cassette constructed from durable 7075 aluminum on the largest three cogs, paired with high-strength steel for optimal wear resistance and longevity.
  • Designed for versatile performance with an expansive 11-51 tooth gear range, this wide-range cassette enhances climbing ability and top-end speed across rugged terrains and steep inclines.
  • Engineered with SnowRace's Fluid Drive Plus technology, offering seamless, precise shifting and smooth power transfer across all gears, compatible with Shimano 12-speed drivetrain systems.
  • Built to fit HG 8-11 speed freehub bodies, this black 12-speed cassette features aluminum lockrings and spacers for reduced weight without sacrificing strength - ideal for aggressive trail riding and endurance races.
  • Innovative 12-speed engineering with lightweight construction (517g), crafted to improve upgrading capabilities, boost performance, and provide a rugged, stylish component for serious mountain biking enthusiasts.
Speed12
ColorBlack
Model NameCSMZ903
Cogs11,13,15,17,19,21,24,28,33,39,45,51
Freehub TypeHG (8-11sp)
Range11-51
Weight517g
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