The QM 43 adapter from Magura allows the use of 160 / 203mm brake discs. The adapter is screwed to an IS mounting on the fork and allows the use of a postmount brake caliper.FeaturesAdapter QM 43 IS to PMAllows the driving of 160 / 203 mm brake discs on the forkMounting on IS 6"- / IS 8" mounts on t..