Speed Pro Speed Pro Piston Forged 4.390" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 1.2 cc BR40071 1966-1977 Ford Bronco

1966-1977 Ford Bronco

TIG-welded chrome-moly tube adapters

Peterson 9 in OD Oil Tanks

Service Oxygen Sensor for Terminator X Systems

Speed Pro Speed Pro Piston Forged 4.390" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 1.2 cc BR40071 1966-1977 Ford BroncoFully 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.