Master Cylinder Rebuild Kit – 16mm piston / Dual Disc / Airheads '74-'75

Top quality aftermarket 16mm Master Cylinder Rebuild Kit for Airheads 74-75 with Dual Disc

Replaces BMW OEM part# 34311234925 which is 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 16mm master cylinder

Has correct o-rings to fit 74-75 reservoir

New main cup seals already installed on piston providing an easier assembly

Note: if your master cylinder bore is pitted, we recommend Apple Hydraulics in NY for sleeving services