Shimano Ultegra CS-R8000 Cassette - 11-34 / 11SPD

Smooth shifting. Optimized gearing. Proven race performance.

The Shimano Ultegra CS-R8000 cassette is designed to deliver the fast, precise, and reliable shifting performance expected from Shimano's renowned Ultegra groupset. Developed as part of the Ultegra R8000 series, this 11-speed cassette offers a wide range of gear options to suit everything from fast road riding and racing to gravel adventures, cyclocross, and long-distance endurance efforts.

Engineered with Shimano's rider-tuned philosophy, the CS-R8000 provides smooth gear transitions and optimized ratios that help riders maintain an efficient cadence across varying terrain. Whether attacking steep climbs, navigating rolling roads, or pushing the pace on the flats, the Ultegra cassette delivers consistent and dependable performance ride after ride.

Built for cyclists who demand durability without compromising weight, the CS-R8000 combines lightweight construction with Shimano's renowned shifting precision, making it a trusted choice for both competitive and recreational riders.

Key Features

• Shimano Ultegra R8000 Series performance
• 11-speed road cassette
• Smooth and precise shifting performance
• Optimized gear progression for efficient cadence control
• Suitable for road cycling, gravel riding, cyclocross, and endurance events
• Lightweight and durable construction
• Rider-tuned gearing options for a wide range of riding styles
• Compatible with Shimano 11-speed drivetrains
• Designed for demanding training and racing conditions

Available Ratios

The CS-R8000 cassette is available in multiple gearing configurations to suit different riding preferences and terrain profiles:

• 11-25T
• 11-28T
• 11-30T
• 11-32T
• 12-25T
• 14-28T

For riders requiring even greater climbing capability, Shimano also offers the wider-range:

• 11-34T (CS-HG800)

Compatibility

Compatible with:

• Shimano HG-EV 11-speed chains
• Shimano HG-X 11-speed chains
• Shimano 11-speed road drivetrains

The CS-HG800 11-34T version is compatible with both road and mountain bike freehub bodies when installed with the appropriate spacer.

Built for Every Ride

From competitive road racing and fast-paced group rides to gravel adventures and cyclocross events, the Ultegra CS-R8000 cassette delivers the smooth shifting, reliability, and versatility riders need to perform at their best.

Efficient, dependable, and engineered to Shimano's highest standards, it remains one of the most trusted cassette options in the performance road cycling market.

Shimano Ultegra

For decades, Shimano Ultegra has represented the perfect balance of race-proven performance, reliability, and value. Designed using technologies developed at the highest levels of professional cycling, Ultegra components bring premium shifting and drivetrain performance to serious cyclists around the world.