Shimano - CS-R8101 Ultegra 12 Speed Cassette import_2021_12_08_175012 Armrest Stack: 60mm (no riser

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

80g of carbs per serving (500 ml)

Designed to repel dirt

Suitable for ages 4-6 or alternatively

Reduces friction and frees seized parts

Shimano - CS-R8101 Ultegra 12 Speed Cassette import_2021_12_08_175012 Armrest Stack: 60mm (no riserSHIMANO 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.