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SKU: CASS0267

Sunrace CS-R91 9-Speed 12-25T Road Bicycle Cassette with Super Fluid Drive Technology, Steel Cogs & Aluminum Lock Ring for Optimized Performance & Durability

Regular price $33.93
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Description
Specifications

Experience seamless shifting performance with the Sunrace CS-R91 12-25T 9-Speed Road Cassette - the ideal upgrade for serious cyclists seeking precision, durability, and lightweight design. Engineered with advanced materials and innovative technology, this cassette ensures optimal gear transitions across diverse terrains, making it perfect for road cycling, endurance rides, and competitive racing.

Materials & Construction:

Built with hardened steel cogs for exceptional wear resistance and long-lasting durability, the Sunrace CS-R91 boasts robust construction that withstands demanding riding conditions. The aluminum lock ring not only reduces overall weight to approximately 280 grams but also guarantees secure installation and smooth operation.

Performance & Engineering:

Featuring Super Fluid Drive technology, this cassette delivers ultra-smooth shifting, enhanced acceleration, and precise gear engagement. Its 9-speed configuration provides a wide gear range from 12T to 25T, allowing cyclists to efficiently conquer both climbs and flats. Designed to integrate seamlessly with Shimano-compatible drivetrain systems, notably the Shimano CS-HG50, ensuring reliable compatibility and effortless upgrades.

Components & Technology:

The steel cogs and specialized engineering optimize power transfer while minimizing chain wear. The lightweight aluminum lock ring enhances rotational efficiency without compromising strength, contributing to a balanced performance-to-weight ratio ideal for road cyclists seeking high-performance components.

Style & Use Case:

With its sleek, performance-oriented design, the Sunrace CS-R91 cassette is a perfect fit for road bikes, endurance rigs, and racing setups. Its versatile gear range offers excellent versatility for varied terrains, making it suitable for both amateur and competitive cyclists who demand quick, reliable gear changes and durability.

Innovative & Unique Features:

- Super Fluid Drive technology for smooth, responsive shifting

- Steel cogs for superior strength and longevity

- Aluminum lock ring for weight reduction and performance efficiency

- Compatible with 9-speed Shimano drivetrain systems

Upgrade your bike's drivetrain with the Sunrace CS-R91 12-25T 9-Speed Cassette and enjoy enhanced speed, durability, and gear precision on every ride. Whether tackling climbs or sprinting on flats, this high-quality cassette is engineered to elevate your cycling experience.

  • High-performance 9-speed road cassette featuring durable steel cogs for reliable shifting and longevity.
  • Enhanced shifting precision and smooth gear changes with Sunrace's Super Fluid Drive technology, optimizing power transfer and reducing drivetrain noise.
  • Lightweight design at approximately 280 grams, constructed with an aluminum lock ring and steel components to deliver a balance of strength and weight savings for competitive cycling.
  • Versatile gear range from 12-25 teeth, ideal for climbing, sprinting, and general road cycling, compatible with Shimano HG50 systems for seamless integration.
  • Innovative engineering with high-quality materials and advanced manufacturing ensures durability and consistent performance on demanding terrains and long-distance rides.
Cogs12,13,14,15,17,19,21,23,25
Gears9sp
Range12-25t
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Customer Reviews

Based on 3 reviews
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R
Rdeo

Great item better price for the part;

A
Amazon Customer

Its good and smooth!;

M
Matthew Sohn

Having purchase the Sunrace (Driven) 10 and 11 speed cassettes I was very open to trying out the 9 speed cassette especially at such a great price point (less than twenty bucks). I had just converted one of my hybrids to a touring bike and it had a 11-32 SRAM 9 speed cassette. Having such a wide range is great when you are lugging packs up and down hills but for general riding around town for training or easy group rides wanted to get some finer control with 12-25 (don't really miss the 11 teeth - hardly use it at full cadence). The bright nickel finish is attractive and shifts nice and easy. But remember that it is a steel cassette with weight to match it is not going to replace your Ultegra or high end SRAM cassette. Now I can enjoy the similar gearing on my hybrid as my regular road bike at an easy price.;