JE Forged Piston Set

81.5mm bore (oversized), 9.0:1 compression ratio, 86.4mm stroke- includes rings, wrist-pins, & circlips
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JE Piston
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Availability: Back Ordered, No ETA
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Product Details

JE Pistons are specifically engineered for extreme applications up to, and including, professional competition.  In this environment, higher compression ratios, extreme boost levels and heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy found in every JE Piston.

Kit Includes:

  • 6X JE forged 2.7T pistons
  • 6X JE Pro Seal piston rings sets
  • 6X JE straight wall carbon steel wrist pins
  • 12X JE wrist pin wire locks

Compression Ratio:

All JE forged piston sets for the Audi 2.7T engine are standard in 9.0:1 compression ratio. This compression ratio is a perfect match for engine builds running high boost, high torque, or race fuels/nitrous requiring this type of forged piston. The compression ratio allows more boost and timing with less chance of cylinder detonation on proper tuning without sacrificing spool time, out of boost power, and peak power. 

Bore Size: 

JE offers your choice of bore size to suit your build. You have the option of stock (81mm) bore sizing or up to +2mm (83mm) oversized bores. Overbore pistons require additional machine work including a cylinder bore and hone, this work must be performed by a machine shop. For most performance engine builds, we recommend overboring the engine block when installing aftermarket pistons. This additional work ensures a proper piston to wall clearance and in most cases results in stronger compression, longer piston life, increased ring life, and quieter piston operation.


**+.5mm bore size: Overbore pistons require additional machine work including a cylinder bore and hone, this work must be performed by a machine shop** 

This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi B5 S4 All 2.7T
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.


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Manufacturer names and/or part numbers are used only for identification purposes.

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