Cassette 12 Speed Shimano Ultegra CS-R8101

The Shimano Ultegra CS-R8101 cassette delivers fast, precise shifting and refined gearing for modern 12-speed road drivetrains.

Designed to match Shimanos latest Ultegra groupset, it provides smooth transitions across the cassette with optimised gear steps that maintain cadence efficiency whether youre climbing, cruising, or sprinting.

Built using Shimanos advanced Hyperglide+ technology, the CS-R8101 ensures crisp upshifts and downshifts even under load.

A lightweight yet durable construction balances performance and longevity, making it an ideal choice for high-mileage riders and racers alike.

Compatible with Shimano 12-speed road drivetrains, this cassette is a direct replacement or upgrade that keeps your Ultegra setup performing at its best.

• Designed for Shimano Ultegra 12-speed road drivetrains.
• Hyperglide+ technology for fast, smooth shifting under load.
• Optimised gear progression for efficient cadence control.
• Lightweight, durable construction for long service life.
• Compatible with Shimano 12-speed road freehub bodies.