SUBARU WRX STI 2.5 EJ257 WISECO PISTONS

Manufacturer: FCP Engineering
Forged high performance pistons for various applications in nearly all engine types for racing and street use.
Made of 4032-T6, piston skirt is molibden coated.
Each set of pistons also includes rings and HD series pins.
Bore size: 81.50mm;82.00mm
Compression ratio (CR): 8.5:1;9.5:1
Compression height: 29.00 mm
Pin diameter: 22mm
Stroke: 95.50mm with 236mm diesel engine block