Shimano Ultegra CS-R8101 Cassette - 12-Speed, 11-30t, Silver USB-C rechargeable and for deflashing and polishing

and for deflashing and polishing the edges after filing

Whether you need to tackle that pesky 14er of taking the dog for a walk the mountains out your backdoor

while the back features a stretch mesh for added breathability

and unique technologies

Shimano Ultegra CS-R8101 Cassette - 12-Speed, 11-30t, Silver USB-C rechargeable and for deflashing and polishingThe Shimano Ultegra CS R8101 road cycling cassette in 11 30T delivers 12 speed performance for riders building or upgrading to Shimano's current generation road drivetrain. The tighter 11 30T range keeps gear steps close for criterium, road racing, and fast group rides where cadence consistency is a priority. Hyperglide+ tooth profiling supports smooth, precise shifts under load in both directions. Compatible with Shimano 12 speed road groupsets and