Speed Pro Speed Pro Piston Forged 4.150" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.7 cc Thermostat Housing Spacer Bushings can be used to

Bushings can be used to advance the cam for increased low-end torque and mid-range horsepower

72-Port Cylinder Heads 72cc Hydraulic Flat Tappet Cam Made In The USA Of T-6

and stainless steel ¼"_x009d_-20 "flying magnet"_x009d_ screw w/ high-temp

090 tig welded aluminum

Each plate has three holes drilled in it and are numbered for different offsets

Speed Pro Speed Pro Piston Forged 4.150" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.7 cc Thermostat Housing Spacer Bushings can be used toFully 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.