Speed Pro Speed Pro Piston Forged 4.160" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.7 cc 3550224-9151- L All are all armed with

All are all armed with our Hyper-Flex(TM) polyurethane

factory pre-set electric choke for easy

Cable Bracket for 105mm Throttle Bodies and Factory or FAST® car style intakes Bracket has allowance for throttle pedal adjustment and/or the addition of a nitrous plate

Fits Chevy small block and Ford small block

Hot air choke

Speed Pro Speed Pro Piston Forged 4.160" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.7 cc 3550224-9151- L All are all armed withFully 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.