Speed Pro Speed Pro Piston Forged 4.150" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.7 cc 205991 two -8AN fittings

two -8AN fittings

Duration 234 / 244

hoses or pulleysDerale has been the leader in performance cooling for decades

Constructed out of aluminum with a black anodized finish

Dual 2-1/4 in Inlet

Speed Pro Speed Pro Piston Forged 4.150" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 6.7 cc 205991 two -8AN fittingsFully 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.