Speed Pro Speed Pro Piston Forged 4.350" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.0 cc 42060KS All parts are cast or

All parts are cast or made from billet

000 PSI holding power on slip and press fit assemblies

Pro Stock Regulator 4-PortAeromotive Inc

Chrysler Gen-2 Hemi

'454' balance

Speed Pro Speed Pro Piston Forged 4.350" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 7.0 cc 42060KS All parts are cast orFully 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.