// Constructed in two parts, aluminium centre and stainless steel braking surface.// High performance disc, allowing the stainless steel outer to expand separatelyfrom the centre and handle high temperatures without warping.// Hope floating rotors have a true floating design which allows 1 degree of freedom.This means the outer is always free to expand when subjected to heat.// Lightweight design.// Aluminium centre acts as heat sink keeping disc temperatures lower.// CNC machined centre is stiff and lightweight so has the advantagesof a thicker fixed disc without the weight penalty.// 6 Bolt fitment// All rotors come with relevant hardware to fit to hub