Climbing range without compromise.
The Ultegra CS-R8101 delivers Hyperglide+ shifting performance with an 11-34T range that gives you a genuine bailout gear for hills without sacrificing top-end speed. Fits both 12-speed and road 11-speed freehub bodies, so upgrading from 11-speed doesn't necessarily mean new wheels.
Why We Chose This for Our Customers:
- 11-34T range with 12 sprockets: 11-12-13-14-15-17-19-21-24-27-30-34
- Hyperglide+ technology for seamless shifts under load
- Compatible with both HG 11-speed and HG-L2 12-speed freehub bodies
- Refined shift ramps work with both Di2 and mechanical 12-speed systems
- Approximate weight: 345g
Fitment: Shimano 12-speed road and gravel drivetrains (Ultegra R8100, 105 R7100, GRX RX820).
Ideal for: Riders upgrading to Ultegra-level 12-speed, or anyone wanting wider gear range for UK hills.
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