Top quality aftermarket 14mm Master Cylinder Rebuild Kit for Airheads '74-'80 with Single Disc
Replaces BMW OEM part# 34311234924 and 34311234926 which are no longer available from BMW
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.
Note: if your master cylinder bore is pitted, we recommend Apple Hydraulics in NY for sleeving services.