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 Designed with 7/8" diameter and

Designed with 7/8" diameter and 2" height for most popular race engines

3/16 in Keyway

Specially designed to resist to high temperature of racing actuated brake (steel or carbon) and clutch systems

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

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 Designed with 7/8" diameter 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.