Master Cylinder Upgrade for Disc Brakes. This larger bore upgrade is a must when using 4 wheel Disc Brakes on a Type 1 VW Disc conversion. Fits all 68 and later Std VW Type 1. Can be used on earlier VW's by install a "T" fitting to feed from 1 reservoir to 2 inlets. Also available in High Quality and available for Super Beetles. Click product info to choose yours.