The Sram CenterLine 2P 140 mm brake disc with 2-part design, is a very lightweight and quiet motor which distributes heat perfectly and brakes powerfully! The Sram CenterLine 2P serie is especially designed to create a balance between durability, cooling, saving brake pads, and braking power. By using high quality 2 mm thick steel, the material prevents that the heat results in bending the material.Specifications:- Heat resistant- Excellent heat distribution- High braking performance and very low weight- Wear resistant steel braking surface- Weight: 140mm diameter: approx. 86 gr.- Material: Aluminum center, steel brake track- Other: CenterLock mount