Subaru WRX-STI EJ255/57 Piston Set by CP - Bore 99.5mm - 9.0:1 Comp.

1. PartNumber: SC7425
2. Description: Turbo Dish pistons (Set of 4) 
3. Pin Size: 23mm
   
4. Bore: 99.5mm

5. CP pistons are rated at 550+ hp. but here at Golden Eagle we believe in over building. If you plan on hitting 600+ hp. we would highly recomend the upgraded pin option.