Speed Pro Speed Pro Piston Forged 4.030" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 2.7 cc Headset Microphones Properly Positioned & Perfectly Radiused

Properly Positioned & Perfectly Radiused Bead

increased longevity (with no fiberglass packing)

Not recommended for 1998 and newer applications as most went to synthetic type fluid

the GMR2 bundle offers versatility and clear communications

Speed Pro Speed Pro Piston Forged 4.030" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 2.7 cc Headset Microphones Properly Positioned & Perfectly RadiusedFully 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.