Shimano RT-CL900 Dura-Ace Rotor w/Lock Ring (Internal serrations)

Engineered for sustained braking on high-speed descents, this Dura-Ace rotor manages heat to reduce deformation for quieter, more consistent braking. An updated arm profile and heat-dissipating paint maintain performance without adding weight.

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

• Heat dissipation paint boosts performance

• Disc brake rotor size: 140 mm, 160 mm, 180 mm, 203 mm

• Average weights: 97 g (140 mm), 114 g (160 mm), 139 g (180 mm), 169 g (203 mm)

• 140 and 160 mm rotors include internal serration lock ring, 180 and 203 mm rotors include external serration lock ring