Shimano Ultegra 12-speed CS-R8100-12 Cassette poloroid Drive Side Adapter for 130mm

Drive Side Adapter for 130mm and 135mm Quick Release

Exact GPS coordinates

form-fitting and super comfortable

USB-C headset

are inspired by the riders and their signature color accents

Shimano Ultegra 12-speed CS-R8100-12 Cassette poloroid Drive Side Adapter for 130mmThe 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