Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 2.7 cc Distributor Collar Use a dark shield during

Use a dark shield during the day and raise it to ride home at night without sacrificing protection

Valves work with Allstar Performance center reliefs and other popular plastic or aluminum quick disconnect fittings

780 in Rectangular Port

Complete with washers

Safe/economical solutionNo matter what your lowered truck suspension needs are

Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 2.7 cc Distributor Collar Use a dark shield duringFully updated skirt profiles Exclusive DUROSHIELD skirt coating. DUROSHIELD provides scuff resistance, reduced bore clearances and enhanced ring sealing. SPEED PRO POWERFORGED pistons are built to stringent specifications with a precision CNC machined dome and skirts and microfinished ring grooves. The manufacturing process ensures that piston weights within a boxed set will not vary more than 4 grams and that skirt sizes are matched to within 0.