CP EJ-20 Series Pistons

CP Shelf pistons come with all these options as standard: deeper valve reliefs for high lift camshafts, larger valve reliefs for 1mm bigger valves, accumulator grooves sometimes called 2nd land pressure reservoir, high strength aluminum forgings, CNC machining to +/- 1 gram, double pin oilers, pin fitted, pick lock grooves for easy lock removal, and the flattest ring grooves. We try to keep the 92.0mm / 92.5mm / 93.0mm 8.5:1 compression ratio pistons sets in-stock at all times!