JE Pistons are specifically engineered for ultra-extreme applications including professional competition. In these elevated environments, higher compression ratios, extreme boost levels and heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy found in every quality JE Piston.

• Application Specific Forgings for an Optimized, Uniform Crown Thickness
• Contact Reduction Groove to Minimize Frictional Drag
• Accumulator Groove for Increased Top Ring Stability and Sealing
• CNC-Machined Side Relief with Lower Support Band for Additional Skirt Strength
• Honed Pin Bores, Double Pressure Fed Pin Oilers and Wire Locks Included
• JE ProSeal Piston Rings are included with your JE Pistons
• Direct fitment for RB25DET engines

• Manufacturer: JE Pistons
• Bore: 86.25mm, 86.5mm OR 87.00mm
• C/D: 30.1mm
• Gram Weight: 355g (86.5mm) OR 360g (87mm)
• Rod: 121.5mm
• Skirt Type: Full Round
• Head CC: 70
• Stroke: 73.7mm
• Dome CC: 15.3
• Oversized: 0.5mm
• Comp Ratio: 8.5:1