Speed Pro Speed Pro Piston Forged 4.090" Bore 5/64 x 3/32 x 3/16" Ring Grooves - Minus 10.0 cc Arm Restraints DROP IN FLEXIBLE FABRIC SURGE

DROP IN FLEXIBLE FABRIC SURGE TANKS

Billet mounts

Holley's BILLET LS Throttle Bodies are the BIGGEST BORE (in the 90 to 95mm category) - MOST FEATURE LOADED available

8-3/8-IN/212-MM

Speed Pro Speed Pro Piston Forged 4.090" Bore 5/64 x 3/32 x 3/16" Ring Grooves - Minus 10.0 cc Arm Restraints DROP IN FLEXIBLE FABRIC SURGEFully 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.