105 CS-R7101

The Shimano 105 CS‑R7101 12‑speed cassette delivers smooth, efficient shifting across a wide 11‑34T range, making it ideal for everything from fast flats to steep climbs. Its refined 12‑step gear progression maximizes cadence control and acceleration, and it’s compatible with both Shimano 12‑speed HG+ road freehubs and traditional 11‑speed road freehub bodies.

• Refined 12‑step gear progression for efficient cadence and smooth acceleration

• Wide 11‑34T range for versatile road riding

• Compatible with HG+ 12‑speed road freehubs and 11‑speed road freehub bodies

• Hyperglide+ shifting for fast, seamless gear changes under load

• Lightweight alloy spider with nickel‑plated steel cogs

• Cog progression: 11‑12‑13‑14‑15‑17‑19‑21‑24‑27‑30‑34

• Weight: 361 g

• Vendor Item #: ICSR710112134

Ideal for riders upgrading to Shimano’s latest 12‑speed road platform who want smooth shifting, wide gearing, and compatibility with existing 11‑speed wheels.