The new generation of adjustable proportioning valves combines the latest refinements to deliver precisepressure metering and strengthfrom a compact forged billet design. Pressure adjustments range from 150-1200 PSI and provide for a maximum decreaseof 57% in line pressure, the most of any available valve. This proportioning valve has six preset points actuated by moving a lever allowing racersto quickly adjust brake bias during a race. The lever "clicks" into the six positions for positive adjustment. Valves weigh only 6.1 ounces (lever), and have two .25" side mounting holes spaced 1.00" apart.Inlet / outlet ports are 10mm x 1 bubble flare.