Modern Automotive Performance
Modern Automotive Performance
  • JE Shelf Pistons 99.5mm Bore 8.5:1 CR | 2004-2015 Subaru STI (EJ25 w/EJ20 Heads) (291059) - Modern Automotive Performance
  • JE Shelf Pistons 99.5mm Bore 8.5:1 CR | 2004-2015 Subaru STI (EJ25 w/EJ20 Heads) (291059) - Modern Automotive Performance

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    JE Shelf Pistons 99.5mm Bore 8.5:1 CR | 2004-2015 Subaru STI (EJ25 w/EJ20 Heads) (291059)

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    PART# JEP 291059

    $526.01

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    JE Shelf Pistons 99.5mm Bore 8.5:1 CR | 2004-2015 Subaru STI (EJ25 w/EJ20 Heads) (291059) - Modern Automotive Performance

    JE Pistons new FSR forgings for the 2004-2015 Subaru STI EJ257 engine with EJ20 heads are both strong and lightweight! The new FSR design has undergone extensive on-track testing to ensure flawless performance under the most demanding conditions.

    Features

    • 2618 T6 high tensile forged aluminum
    • Comp Ratio: 8.5:1
    • Bore: 99.5mm
    • Gram Weight: 411
    • Dome CC: -25.5
    • Head CC: 48.0
    • Stroke: 79mm
    • Rod: 130.5mm

    Benefits

    • Specifically engineered for high horsepower Subaru engines.
    • Dome and dishes feature smooth flowing radii for excellent flame travel.
    • Pin fitting and Tru Arc locks included.
    • JE Pro Seal Rings Included.
    • Piston Profile Matches EJ20 Chamber Profile. No Cylinder Head Mofications Necessary.

    Please Note:

    • Compatible with either OEM or aftermarket rods

    Applications

    • 2004-2015 Subaru STI
    • Notes: Designed for EJ257 Motor with EJ20 Heads
    • What's in the box?

      • Piston Set
      • Pin fitting and Tru Arc locks included
      • JE Pro Seal Rings Included
      • .905 x 2.250 straight wall carbon steel wrist pin

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