Speed Pro Forged Piston Set - 4.030" Bore - 5/64 x 5/64 x 3/16" Ring Grooves - Plus 5.3 cc - Coated Skirt - SB Chevy (Set of 8) SR91152PDO-6 Crank Adjuster

Crank Adjuster

50 State Emissions Certified

Protect the lower edge of your nose in style

000 rpm in just 333 milliseconds ensuring that you never have to worry that your engine is spinning faster than the tach and includes a built-in memory recall to allow review of the highest RPM achieved on your last pass or hook

Speed Pro Forged Piston Set - 4.030" Bore - 5/64 x 5/64 x 3/16" Ring Grooves - Plus 5.3 cc - Coated Skirt - SB Chevy (Set of 8) SR91152PDO-6 Crank AdjusterFully 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.