Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 36.3 cc 20601X JOES high-capacity 40 amp switch

JOES high-capacity 40 amp switch panels are sealed with rubber to keep out moisture and dirt

hardened tip

even at high racing rpm

jets and stepup springs to fine tune to your application

Extra long 8

Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 36.3 cc 20601X JOES high-capacity 40 amp switchFully 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.