Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 2.7 cc Tap Separated By Aluminum Alloy

Separated By Aluminum Alloy

Eliminator BNC

RPM Air-Gap Magnum

Not compatible with fuel

They feature tighter plunger to body tolerances and super strict tolerances for the mechanical internals

Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 2.7 cc Tap Separated By Aluminum AlloyFully 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.