Shimano Dura Ace RT-CL900 - 140mm | Center Lock Disc Brake Rotors The asymmetric shape is specific

The asymmetric shape is specific to monoblock caliper designs and will not fit standard two-piece calipers

making it the preferred choice for mountain bike applications where the hose is more exposed

no trimming or custom cutting required

11 pad shape

For riders who treat a build as a long-term investment

Shimano Dura Ace RT-CL900 - 140mm | Center Lock Disc Brake Rotors The asymmetric shape is specificWhy Run the Shimano Dura Ace RT CL900 140mm on Your Road Bike? The Shimano Dura Ace RT CL900 140mm carries the same three technology stack as the 160mm flagship: ICE TECHNOLOGIES FREEZA (three layer stainless aluminum stainless sandwich with extended radiator fin), the Dura Ace exclusive 3D Aluminum carrier engineered to resist heat deformation and prevent rotor runout noise, and heat dissipation paint for additional thermal performance. The 140mm