Speed Pro Speed Pro Piston Forged 4.155" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 18.0 cc Seat Belt & Harness Pads and Ford V8 engines and

and Ford V8 engines and transmissions

Requires Use Of 91 Octane Fuel/180 Degree Thermostat/Free Flow Exhaust ECM Located Under Hood

High-Horsepower street cars and trucks can be a challenge to keep cool

yet economical gas cell design

Speed Pro Speed Pro Piston Forged 4.155" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 18.0 cc Seat Belt & Harness Pads and Ford V8 engines andFully 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.