JE Pistons

JE Pistons 85.5mm 9.0:1 CR | Mitsubishi 4G63 (297051)

  • Sale
  • $566.99
  • Regular price $1,231.80

JE Pistons are specifically engineered for extreme applications up to, and including, professional competition. These pistons are made with 2618 T6 high tensile forged aluminum alloy and featuring smooth flowing radii for excellent flame travel.


  • Bore Size: 85.5
  • Oversize: 0.5
  • Dome Volume: -13.3
  • Weight: 306
  • Skirt Style: F


  • Crown requires no deburring or preparation
  • 2618 T6 high tensile forged aluminum
  • NEW ASYMMETRICAL FSR forging! State of the art asymmetrical skirt technology reduces friction and mass while providing a more rigid and durable platform (Skirt Style F).
  • In this environment, higher boost levels or heavy nitrous usage necessitate JE's wrought 2618 alloy.
  • FSR pistons include offset pins for quiet operation.
  • Dished pistons feature new Smooth Finished Crown process for excellent flame travel.
  • 1.0 x 1.2 x 2.8mm ring widths
  • .866 x 2.250 straight wall carbon steel wrist pin provided.
  • Pin fitting and wire locks included


  • Mitsubishi 4G63

What's in the box?

  • Piston Set
  • Pin fitting and Tru Arc locks
  • Piston Rings
  • .866 x 2.250 straight wall carbon steel wrist pins