Speed Pro Speed Pro Piston Forged 4.160" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.7 cc 120005 the CHACP100KO is available in

the CHACP100KO is available in a 6 1/2" depth allowing better ground clearance

no need for extra lines to the tank

and Mini-Stock

600'' exhaust valves with AFR's iron ductile interlocking valve seats

1986-1987 Mercury Topaz

Speed Pro Speed Pro Piston Forged 4.160" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.7 cc 120005 the CHACP100KO is available inFully 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.