Shimano xt rt86 ice tech disc brake rotorthe xt rt86 ice tech brake disc provides exceptional braking power in all weather conditions. Shimano has built it from three parts and the stainless steel and alloy materials speedily disperse the build up on heat from your hydraulic brakes. This mountain bike mtb disc brake rotor has an outstanding lifespan, gets the best performance from your brakes and produces much less noise than basic factory fitted models.featuresmaterial stainless steel and alloymount type 6 boltcompatibility all shimano mountain bike mtb hydraulic disc brakesice tec rotors achieve long pad life, less noise and less fade due to improved heat dispersionrotor contact surface has been developed for excellent pad clearing and cooling which increases pad performance and lifelarge forged alloy spider supports rotor surface, increasing rigidity and reducing weightweight 160mm 135g 180mm 154g 203mm 187g manufacturer reference codes160mm smrt86s 180mm smrt86m 203mm smrt86la 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products.buy shimano components from chain reaction cycles, the world's largest online bike store.