SHIMANO Ultegra CS-R8101 12-Speed Cassette Size:11-34 the KOKO now has Kamm-Tail

the KOKO now has Kamm-Tail profiles incorporated into the downtube

Retention claws and a mud-shedding design ensure reliable performance in all conditions

Double it up for optimal traction offroad or pair it with our CAVA in the rear to drift the corners a bit more

paint scheme

along with a lightweight Durolite upper

SHIMANO Ultegra CS-R8101 12-Speed Cassette Size:11-34 the KOKO now has Kamm-TailThe uninterrupted shifting experience of the Shimano Ultegra CS R8101 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. Shimano HYPERGLIDE+ technology is integrated to provide seamless shifts both up and down the gear range.