Shimano - CS-R8101 Ultegra 12 Speed Cassette import_2021_12_08_175012 Reduces friction and frees seized

Reduces friction and frees seized parts

Armrest Stack:  60mm (no riser kit) to 130mm in 5mm increments (With aftermarket Riser Kit)

It’s all about how you mix it

Valve remover tool

Aluminum trigger designed for a positive lever feel

Shimano - CS-R8101 Ultegra 12 Speed Cassette import_2021_12_08_175012 Reduces friction and frees seizedSHIMANO ULTEGRA 12 speed HYPERGLIDE+ Road Cassette Sprocket The uninterrupted shifting experience of the ULTEGRA 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.