Ideal for street/strip and marine applications. Symmetrical valve reliefs for universal installation. High silicon alloy for tighter piston to wall clearance. Lower ring lands and thicker crown for increased durability. Great for light duty nitrous or forced induction. .990'' x 2.930'' x .150'' straight wall carbon steel wristpin (150g) included. 1/16'' x 1/16'' x 3/16'' ring grooves.