CENTERLINE X CenterLine X rotors are the lighter weight version of SRAM’s quiet, smooth, and robust CenterLine rotors. The CenterLine X rotor features a two-piece design with an alloy centre and steel brake track. Rounded edges make for easier wheel installs and are UCI-compliant.   THINGS TO REMEMBER Compatible with both road and mountain bike brakes Sram CenterLine X 2 piece rotors features Lightweight, two-piece design Rounded edges are UCI-compliant and allow for easier wheel installs Diam (Rotor):  140mm, 160mm, 180mm Hub interface:  6-Bolt Bolt material (RT):  Titanium Colour (RT):  Black Rotor Type:  Centerline 2-Piece