The CenterLine X rotors are the lighter-weight version of SRAM's quiet, smooth and robust CenterLine rotors, featuring a two-piece design with an alloy center and steel brake track. With vents in the steel brake track, the CenterLine X efficiently disperses heat for more consistent, reliable braking.
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Brake Pad Type: Disc
Brake Type: Disc
Hub Compatibility: Center-Lock
Brake Parts: Rotor
140mm - Centerlock
Mfg PartNum: 00.5018.037.022
160mm - Centerlock
Mfg PartNum: 00.5018.037.023
Mfg Warranty: 24 Mo. Parts
Warranty URL: https://www.sram.com/en/service/warranty
So I use a pair of these on a cyclocross training wheelset, and I sue a pair of the more expensive Sram XR rotors on my road wheelset. But despite the XR's being almost twice the cost of this model, I can not tell why these are "inferior" or the "lower end" model from SRAM. These seemed great, were a little less "heavy" looking with the more open black interior portion, and SIGNIFICANTLY cheaper than the road XR version. They do the job great, look fantastic, and don't cost a ridiculous amount per rotor.
Originally, I used an adapter on my 6-bolt rotors, which appeared to be warped out of the box, with no amount of bending would eliminate completely the occasional 'ching-ching-ching' of disc brake resonance. I upgraded to this in hope of eliminating this annoying noise, but it also rubs occasionally, and also appears slightly warped at exactly the same spot as the 6-bolt rotor rubbed. The rotor is stamped with a directional arrow that somehow during production causes a slight warp on the rotor. Not horrible, but sometimes annoying. The brakes function great, but sometimes I wish I'd chosen the rim brake option to this setup.