Diamond Competition Series Pistons 5.4, 2v/4v No Reliefs

Good for 800hp without a pin upgrade. For power levels over 800 we recommend an H13 pin upgrade.   Forced pin oilers from the oil ring; Pin Fitted; Moly Coated Skirts; 3D Pockets; Pins, Lock's...

Diamond Pistons .220-.225 wall H-13 Series Wrist Pins These are for upgrading the pins on Diamond Comp series Pistons

H-13 Material 0.866D x 2.500L x 0.200W Chamfered.  These are required to be used in engines making over 700hp.