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JE Ultra Series forged pistons for the Nissan SR Series are a set of four 86mm bore pistons with 8.5:1 compression, built with inverted dome/dish profiles. Ultra Series uses JE’s Aligned Grain Flow forging and includes thermal barrier crown coating, skirt coating, lateral gas ports, optimized pin oiling and high-strength wrist pins—features aimed at maintaining seal and strength in boosted and high-RPM engines.
JE Pistons Ultra Series Nissan SR20DET 86mm Bore 8.5:1 CR Set of 4 Pistons
