Upgrade your drivetrain with the smooth, precise shifting performance of the Shimano Ultegra CS-R8101 12-speed cassette. Designed for Shimano’s latest 12-speed road groupsets, this cassette delivers fast, seamless gear transitions and optimized efficiency for both competitive riders and serious enthusiasts.
Built with Shimano’s advanced Hyperglide+ technology, the CS-R8101 ensures smooth shifting under load and consistent pedaling performance across all gears. The carefully engineered tooth profiles provide improved chain engagement and enhanced durability for long-term use.
Model: CS-R8101
Series: Shimano Ultegra R8100
Speed: 12-Speed
Hyperglide+ technology for smooth, fast shifting
Compatible with Shimano 12-speed road drivetrains
Lightweight and durable construction
Designed for HG L2 12-speed road freehub bodies
Perfect for road racing, training, and performance riding.
These are OEM Shimano Parts, Brand new, Never Installed on Bike, Never used in any way, just NOT in retail packaging.

