SRAM's original CenterLine rotor ushered in a new wave of high-powered braking paired with industry-leading cooling capacity. The CenterLine X Rotor maintains all the awesome features of its older sibling and drops a few grams by pairing its steel braking surface with a light and durable aluminum center. This rotor gets its name from strategically placed venting lines in the middle of the braking track that help reduce overheating for consistent braking power on long descents and technical sections. The CenterLine X also features the same 12-spoke design as the CenterLine to reduce lateral bending or warping under heat stress. This results in a stable rotor with predictable, smooth braking capabilities that lets you fly down the trail with confidence.