Our super-compact De Luxe master cylinders with lever and reservoir were specifically designed to be used in conjunction of our weld-on hand controls (so they can be used as brake or hydraulic clutch levers), but can be used for many custom applications for brake or clutch operation. Machined out of billet aluminum they can be easily hidden on the bike for a super-clean look. De Luxe remote master cylinders can be welded under the seat, under the tank or in any other place hidden or not. These 9/16″ (14mm) bore master cylinders can be used with single 2-piston caliper, 4-piston caliper, 6-piston caliper or dual 2-piston calipers. Mounting bracket will need to be fabricated and welded to the desired location. NOTE: we suggest to use DOT 4 brake fluid. In any case do not use silicon based oils.