Subaru EJ257 Forged Piston Set (Set of 4) – WRX STI

Subaru EJ257 Forged Piston Set

High-performance forged aluminium piston set for the Subaru EJ257 boxer engine. Built to handle increased boost pressures in modified WRX STI applications while maintaining OEM reliability in standard builds.

Kit Contents

• 4x forged aluminium pistons
• Piston rings (compression + oil control)
• Piston pins and circlips

Key Features

• Forged aluminium for superior strength
• Flat-top design for stock compression ratio
• Compatible with stock stroke and bore
• Suitable for up to 400+ bhp applications

Technical Specifications

• Engine: Subaru EJ257 (2.5L Turbocharged Boxer)
• Bore: 99.5mm (standard)
• Material: Forged aluminium alloy
• Condition: New

Compatibility

Compatible with Subaru Impreza WRX STI (GD/GR/GV) 2004–2014 with EJ257 engine. Verify bore size and build spec before ordering.