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RT-CL800 Rotor - Centerlock
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Warning: California Proposition 65
Smooth, silent control with RT-CL800 Rotor’s heat-fighting Freeza construction
What Our Gearhead® Experts Are Saying:
"I ride these rotors on my gravel setup and they’ve made a big difference on long descents. Braking is super quiet, even when it’s wet, and the Ice Tech Freeza design keeps them from overheating. Install was quick with the centerlock, and they’ve stayed perfectly true over dozens of rides."
Big climbs deserve confident descents, and that’s exactly what we get with the Shimano RT-CL800 Rotor. Designed to pair with Shimano’s GRX 11-speed groupset, this rotor delivers smooth, fade-free braking on everything from backroad passes to fast gravel descents. Whether we're pushing the pace or just trying to keep things under control, this rotor offers quiet, consistent power.
With Ice Technologies and Freeza construction, the RT-CL800 effectively dissipates heat, extending pad life and reducing noise. A robust aluminum arm adds stiffness for better modulation, and the centerlock design makes installation fast and secure. Available in both 140mm and 160mm diameters, it offers a tuned braking feel no matter your frame clearance or riding style.
Details
- Centerlock disc brake rotor tuned for Shimano GRX 11-speed groupsets
- Ice Technologies and Freeza design dissipate heat and increase rotor durability
- Smooth, consistent braking with reduced pad wear and fade
- Aluminum carrier arm stiffens the structure and reduces vibration
- Runs quieter and cooler during long gravel or road descents
- Tool-free centerlock attachment for easy installation and removal
- Compatible with a wide range of gravel and endurance bikes
- Available in 140mm and 160mm rotor diameters
- Item #SHIU1HM
- Material
- steel, aluminum
- Attachment Type
- flat centerlock
- Compatibility
- Shimano GRX, 11s
- Diameter
- 140mm, 160mm
- Includes
- 1 rotor, 1 lockring
- Claimed Weight
- [140mm] 96g, [160mm] 114g
- Activity
- gravel
- Manufacturer Warranty
- 2 years
100+ Years in the Making
Founded in Japan in 1921, Shimano has spent over a century earning the trust of riders at every level. Their precision engineering and relentless drive to innovate have made Shimano components a fixture on trails and roads worldwide.
Cancer and Reproductive Harm - P65Warnings.ca.gov
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