Lock Rings: External spline

RT-CL800
NEW
Quieter control for any terrain
With a focus on decreasing disc brake rotor heat deformation, the result of the new disc brake rotor is quieter than ever brake performance without sacrificing weight or heat dissipation.

FEATURES 
Quieter than ever, but with superb, consistent braking performance on any long, steep descents thanks to excellent heat dissipation
The new arm shape is more robust, leading to quieter operation
Disc brake rotor size: 140 mm, 160 mm

PRODUCT SPECIFICATIONS
PRODUCT SPECIFICATIONS
MODEL NO: RT-CL800
SERIES: ULTEGRA R8100 Series
Average weight: 114 (160 mm) 96 (140 mm)
ICE TECHNOLOGIES: ✔
ICE TECHNOLOGIES FREEZA: ✔
CENTER LOCK: ✔
Outside diameter_140 mm: ✔
Outside diameter_160 mm: ✔
Pad lining shape compatibility_Narrow: ✔