Features:SM-RT86 Ice-Tec rotors give excellent performance made from a stainless steel / alloy 3-layer sandwich construction that manages heat while riding The clad steel / alloy / steel rotor construction allows heat generated from braking to radiate quickly through the aluminium core achieving surface temperature drops of around 50 deg C. When used with Ice-Tec pads surface temperatures can drop from around 400 to 300 deg C, this provides great improvements in performance all round Ice-Tec rotors achieve long pad life, less noise & less fade due to enhanced heat dispersion 6-bolt mounting system Rotor contact surface has been developed for excellent pad clearing & cooling which increases pad performance & life Large forged alloy spider supports rotor surface, increasing rigidity & reducing weight