Speed Pro Speed Pro Piston Forged 4.080" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.5 cc V202201 The wider gap also helps

The wider gap also helps spark plugs stay cleaner longer which means fewer plug changes at the track

1979-1995 Ford E-150 Econoline Club Wagon

1996-1999 Ford Mustang

5-1/2 in Wide Pedal

005 in Undersize

Speed Pro Speed Pro Piston Forged 4.080" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.5 cc V202201 The wider gap also helpsFully 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.