Magura Disc Brake Adaptors ADAPTING OVERHydraulic 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 description QM5: Adaptor for 203mm Rotor on Front IS Mounts QM7: Adaptor for 203mm Rotor on 6"(160mm) Post Mounts QM10: 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 Mounts QM26: Adaptor for 203mm Rotor on 7" (180mm) Post Mounts QM27: Adaptor for 160mm Rotor on 5" (140mm) Post Mounts QM28: Adaptor for 180mm Rotor on 5" (140mm) Post Mounts QM40: 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)QM44: Adaptor for 203mm rotor with 7" (180mm) Post Mounts QM45: Adapter for 220mm rotor with 7" Post Mounts (180 to 220 Front) | Magura | Disc Brake Adaptors Qm41 6" Is Rear To 180Mm Rotor