Master Cylinder Rebuild Kit Airheads 1974-80, Single Disc 14mm

Master Cylinder Rebuild Kit Airheads 1974-80, Single Disc Features: Machined and hard anodized aluminum piston Complete with all parts needed to perform a quality rebuild of the under-tank 14mm master cylinder Has correct o-rings to fit 74-75 reservoir and 76-80 reservoir. New main cup seals already installed on piston providing an easier assembly Fits all single disc models from 1974-1980 except R65.   Replaces BMW OEM part# 34311234924 and 34311234926 which are no longer available from BMW