Adjustable Proportioning Prop Valve Car Hot Rod Truck Racing Disc Drum Brakes

OSIAS Adjustable brake proportioning bias valve knob style suit disc drum brake

For Hot Rod Ford Chevy GM Style Proportioning Valve Suit Disc Drum Brakes Brass

GM Disc/Disc Proportioning Valve for 1/2-20, 9/16-18 Outlet, Side Mount BLACK

26011179 Universal Knob Adjustable Combination Proportioning Valve with Lines

260-11179 Knob Adjustable Combination Proportioning Valve Kit 260-13190

Wilwood 260-8419 Knob Adjustable Disk Brake Proportioning Valve

Custom BLACK Tandem Oval Street Hot Rod Master Cylinder w/ 1 1/8" Bore Disc Drum