JE Shelf Pistons 99.5mm Bore 9.5:1 CR | 2004-2021 Subaru STI EJ257 with EJ20 Head (310936) JE Pistons

JE Pistons 99.5mm Bore for Subaru EJ257

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: 9.5:1
• Bore: 99.5mm
• Gram Weight: 423
• Dome CC: -7.0
• Head CC: 57.0
• 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
• Standard Stroke Series now compatible with either OEM or aftermarket rods!

Applications

• 2004-2021 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

Warranty

• Manufacturer Standard Warranty