The new generation of adjustable proportioning valves combines the latest refinements to deliver precise pressure metering and strength from a compact forged billet design. Pressure adjustments range from 100 - 1000 PSI and provide for a maximum decrease of 57 in line pressure, the most of any available valve. This proportioning valve has six preset points actuated by moving a lever allowing racers to 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 18 - 27 NPT and valves are supplied with two 18 - 27 NPT to 38 - 24 inverted flare female fittings that will fit most domestic 316th hard brake lines.