Strange Enginering Dual Master Cylinder 1.125"Bore B3359TABKApplication Vehicles with front and rear manual disc brakes Normally used with four piston calipers in both the front and rear brakes Brake pressure will be delivered equally out of both ports Use of an adjustable proportioning valve is highly recommended Using All Wheel Disc brakes Use 2 lb. residual pressure valves if mounted at or below the level of the calipers Using With Drum Brakes Any line supplying drum brakes will require a 10 lb. residual