Magura Gustav Master Body But My Body, My Body's Telling Me Yes Do you have a Magura Gustav hydraulic disc brake system that needs a new master body? This is a replacement part for the Magura Gustav brakes. It features a 10mm piston diameter, an Easy Link connection type, is compatible with Bosch ABS Gen 2, and the brake lever is completely filled. Features Magura Gustav brake lever master parts for repairs or service Easy Link connection type and 10mm piston diameter Compatible with Bosch ABS Gen 2 | Magura | Gustav Master Body Body