Shimano CS-R8101 Cassette 11-30 ULTEGRA 12-speed Size:11-30T In one sense

In one sense

- Locking Mechanism: External Lever Lock

making it simple to protect your gear

Designed with the same design boundary conditions as KRYPTOTALRe: steep and shallow ramps tailored to the area of application in mixed and loose terrain

comfortable fit

Shimano CS-R8101 Cassette 11-30 ULTEGRA 12-speed Size:11-30T In one senseThe uninterrupted shifting experience of the ULTEGRA R8100 12 speed cassette range lets you climb, sprint, or cruise without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12 speed FREEHUB bodies. HYPERGLIDE+ cassettes revolutionized off road shifting with its seamless shifts both up and down the gear range. Now it's time for the technology to change