Speed Pro Speed Pro Piston Forged 4.124" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 38.3 cc RG200012XL 5% Para Aramid

5% Para Aramid

330 Diameter

Be sure to check out all our products from Holley Performance including Holley Intake Manifolds

Harness for Ferrous Crank/Magnetic Cam Hall Effect Sensors

The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings

Speed Pro Speed Pro Piston Forged 4.124" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 38.3 cc RG200012XL 5% Para AramidFully 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.