Description
The ring lands, crown, and bottom band of these pistons are specifically designed for nitrous applications. The valve reliefs accommodate most oversized valves and long duration, wide lobe separation cams. Pin upgrade recommended above 700hp. Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings. HNS (Hardened Nitrous Series) rings are available for this series, change ring prefix to J820F8.