Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-34t Flat Pedals rattle-free connection to frames with

rattle-free connection to frames with a braze-on front derailleur tab

engineered alongside the R9200 generation with a 45% faster shift speed and a 33% reduction in frontal area compared to the previous generation FD-R8070

The included 4-foot cable lets you loop through a second wheel or accessory without needing to carry a separate lock

Works with both Shimano Rear Direct Mount and standard 10x1 dropout hanger frames

but with substantially more material underhand

Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-34t Flat Pedals rattle-free connection to frames withWhy Is the Shimano Ultegra CS R8101 the Go To 12 Speed Cassette for Serious Road Riders? The Shimano Ultegra CS R8101 brings HYPERGLIDE+ technology to Ultegra level riders, enabling uninterrupted shifting under full pedaling load whether climbing, sprinting, or accelerating out of corners. Larger driving cogs maximize drivetrain efficiency and the cassette is compatible with both Shimano 11 speed and 12 speed freehub bodies, making it a clean upgrade