Forged Piston for Subaru EJ25 99.5mm 100mm WRX STI 2.5l EJ255 EJ257

Product Specifications

Forged Pistons:

• Material: 4032 Alloy
• Bore Diameter: 99.50mm/100.00mm/100.50mm
• Pin Size: 23.00mm
• Compression Ratio: 8.5:1
• Compression Height: 30.70mm
• Set of 4

Technical Features of Hench Performance Forged Pistons

• Pin Oiling, for better lubrication of Piston Pins and significantly extend lifetime at super high temperature and rpm.
• Completely Phosphate Coated, increase Oil Adhesion for better lubrication(Optional).
• Moly Coated on skirt for reducing friction of piston and cylinder wall(Optional).
• CNC machining for superior tolerances, precise as much as 0.005mm
• Optimal balancing for weight matched sets of ± 0.5gram

Contains:

• Piston x 4
• Piston Pin x 4
• Pin Lock x 8
• Piston Ring x 4

Application:

Subaru EJ25

• Subaru Impreza WRX 2.5L Turbo
• Subaru Impreza WRX STI 2.5L Turbo