Magura Disc Brake AdaptorsHydraulic disc brakes are among some of the greatest bits of technology to make their way in to the cycling world. However, they only work if you can get them mounted to your bike. Magura disc brake adapters will help get those parts where they belong, on the bike. Choose the one that suits you needs.Part number and descriptionQM5: Adaptor for 203mm Rotor on Front IS MountsQM7: Adaptor for 203mm Rotor on 6"(160mm) Post MountsQM10: Adaptor for 180mm Rotor on Rear IS Mounts (Not compatible with current Magura 4 piston calipers)QM11: Adaptor for 160mm Rotor on Front IS Mounts, also for 203mm Rotor on Fox 40QM12: Adaptor for 160mm Rotor on Rear IS Mounts or 180mm Rotor on Front IS MountsQM26: Adaptor for 203mm Rotor on 7" (180mm) Post MountsQM27: Adaptor for 160mm Rotor on 5" (140mm) Post MountsQM28: Adaptor for 180mm Rotor on 5" (140mm) Post MountsQM40: Adaptor for 180mm Rotor to 6" post mount front or rear (replaces QM6 & QM20)QM41: Adaptor for 180mm rotor with 6" IS rear (replaces QM10)QM42: Adaptor for 203mm rotor to 6" post mount fork (replaces QM7)QM43: Adaptor for 160mm rotor with 6" IS mounts (replaces QM11) | Magura Disc Brake Adaptors Qm9 6" Is Rear to 203mm Rotor