Arias HD Forged Pistons: Honda K20 – 87.5mm (+1.5mm) | 10.3:1 CR
PartNumber: A3339575HD Description: Flat top pistons (Set of 4) Pin Size: 22mm Bore: 87.5mm ARIAS 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.