1 x Shimano SM-RT66 6-Bolt Disc Rotor (160MM or 180mm). 160mm approx.115g (with 6 fixing bolts). 180mm approx. 140g (with 6 fixing bolts). only compatible with 160mm. The Shimano SM-RT66 disc brake rotor with 6-hole mounting system and rotor design for constant braking force under all driving conditions.
