Shimano Dura-Ace RT-CL900 Ice-Tech Centerlock Disc Rotor carted The DH-1 works with all

The DH-1 works with all 5–13 speed derailleur chain and 1/8" width BMX and track chain

and offset slot all help create a collar that generates maximum clamping force at only 25-inch pounds of fastener torque

The rolling resistance is also not negatively affected by the PolyX Breaker

Reduces heat build up

Shimano Dura-Ace RT-CL900 Ice-Tech Centerlock Disc Rotor carted The DH-1 works with allDesigned for the demands of modern road, gravel and XC racing, the Shimano RT CL900 ICE TECHNOLOGIES FREEZA Disc Rotor delivers exceptional braking consistency, outstanding heat management and whisper quiet performance on even the longest descents. As Shimanos flagship DURA ACE rotor, the RT CL900 is engineered to maintain confident braking under extreme conditions while remaining incredibly lightweight. The updated rotor arm design improves rigidity