Shimano slx rt70 m7000 centre lock disc rotorthe shimano rt70 disc rotor is a replacement disc brake rotor with centre lock mounting. With ice tech technology to give optimum braking performance this rotor is quick and easy to fit and is compatible with both resin and metal disc pads.optional ice tech brake pads with aluminium cooling fins can reduce the brake pad surface temperature by another 50 degrees. The result is high stopping power and practically no signs of fading. They also feature an updated design with refined shaping over the rt68 rotor.features sm rt70 ice tech rotors give excellent performance using the proven shimano centre lock system providing excellent rigidity and security with an easy set up 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° when used with ice tech pads surface temperatures can drop from around 400 to 300°, this provides great improvements in performance all round refined shaping design over rt68 ice tech rotors achieve long pad life, less noise and less fade due to improved heat dispersion rotor contact surface has been developed for excellent pad clearing and cooling which increases pad performance and life precision cut stainless steel braking surface improves pad clearing in muddy conditions while aiding cooling under high load rotor contact surface has been developed for excellent pad clearing and cooling which increases pad performance and life alloy spider supports rotor surface, increasing rigidity and reducing weight comes complete with steel lockring mount type centrelock series slx m7000 pad compatibility resin or metal part no. sm rt70 brake compatibility shimano mechanical and hydraulic disc brakes weight 133g 160mm, 159g 180mm, 193g 203mmplease note centrelock disc not compatible with is2000 disc rotor mount 6 hole systemplease also note the 180 203mm disc requires a special brake caliper mount adapter for most frames forks. Please do not exceed the disc specifications of your forks frame.a 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr productsbuy  shimano components from chain reaction cycles, the world's largest online bike store.