The SRAM CenterLine XR (CLX-R) rotor works in tandem with the SRAM eTap AXS™ drivetrain. It's designed specifically for road riding — and to keep braking quiet at every stop.Features:- Streamlined form optimized for road use- CenterLine track offers quiet brake operation- Two-piece design reduces weightSpecifications:- Diam (Rotor): 140mm, 160mm- Hub interface: 6-bolt, Center Lock- Bolt material (RT): n/a, Steel- Color (RT): n/a- Rotor Type: Centerline 2-Piece