JE Pistons 87mm FSR Forged Asymmetrical K-Series K20/K24 Pistons: 10.0:1

$821.78 USD $982.00 USD Save $160.22 USD

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SKU: 309421


  • 8th Gen Honda Civic Si
  • 9th Gen Honda Civic Si
  • Acura RSX
  • 1st Gen Acura TSX
  • 2nd Gen Acura TSX

BEFORE ORDERING: JE Pistons 10.0:1 Pistons with FSR forging are designed for K20 cylinder head and K24 engine block.

JE designs are specifically engineered for extreme applications up to (and including), professional competition. In this environment, the higher compression ratios, highest boost, or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.


  • 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.
  • FSR pistons feature new Smooth Finished Crown process for excellent flame travel
  • 1.0 x 1.2 x 2.8mm ring widths (ring prefix JG1) or 1.2 x 1.2 x 2.8mm (ring prefix JC2)
  • .866 x 2.250 straight wall carbon steel wrist pin provided


  • 4 pistons
  • 4 wrist pins
  • 4 wrist pin locks
  • 4 rings 

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