JE Pistons are machined by the most advanced CNC machining technologies available. JE forged Pistons are trusted by racers and engine builds for dependability. JE Nitrous pistons ring lands, crown and bottom band are specifically designed for nitrous applications. The valve reliefs accommodate most oversized valves and long duration, wide lobe separation cams. 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.

Includes:

Pin #927-2950-15-51S (140g)

Double spiro locks #927-042-CS

Double pin oilers

Contact Reduction Grooves

Compression Ratio:

58cc 13.4:1

64cc 12.3:1

76cc 10.7:1