Shimano Dura Ace RT-CL900 S - 160mm | Center Lock Gravel Bikes Locating the accessory aft of

Locating the accessory aft of the computer improves weight distribution

Reliable Shimano bearings and seals deliver the long service life Ultegra is known for

Built with precise construction and improved durability

The double deadbolt locking mechanism engages on both sides of the shackle for added rigidity

Shimano Dura Ace RT-CL900 S - 160mm | Center Lock Gravel Bikes Locating the accessory aft ofWhat Makes the Shimano Dura Ace RT CL900 160mm the Top Road Rotor? The Shimano Dura Ace RT CL900 160mm is the flagship road disc brake rotor, combining three distinct thermal technologies into one package: ICE TECHNOLOGIES FREEZA (the three layer stainless aluminum stainless sandwich with extended radiator fin), a Dura Ace exclusive 3D Aluminum carrier optimized in every dimension for heat distortion resistance, and a heat dissipation paint coating