XLC brake disc BR-X59 Material: Brake surface: Niro AISI 420 Spider: Aluminium 7075 Two-piece construction for less deformation of the disc at high temperatures Less heat transfer to the hub protects the bearing Weight: ø 160 mM125g with CNC friction ring Improved braking performance in wet conditions Reduces the frictional heat in dry conditions Reduces the braking time for the brake pads