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. Streamlined form optimized for road use CenterLine track offers quiet brake operation Two-piece design reduces weight DIAM (ROTOR) - 140mm, 160mm COLOR (RT) - n/a BOLT MATERIAL (RT) - n/a, Steel HUB INTERFACE - 6-bolt, Center Lock ROTOR TYPE - Centerline 2-Piece REC LOCKRING - Lockring sold separately, n/a 00.5018.122.002