This pedal mounts two brake master cylinders with a bias balance bar and positions the master cylinders inside the firewall and away from engine heat. The pedal features all aluminum frame and arm construction with steel pivots, mounting studs, and an anti-skid pedal pad. Two ratios are offered to suit mounting and leverage requirements. Brake bias can be adjusted via balance bar. End user needs to calculate master cylinder bore size based on caliper piston or wheel cylinder size Accepts any 2 x single piston master cylinders with a 2.25" vertical bolt spacing flange eg: Wilwood GS compact, GS integral, Remote Flange Mount