The piston is the weak link in the stock STI block. By adding these forged pistons to your stock STI block you are able to get 500+ hp out of the motor. These pistons are +.020, Standard bore pistons are available as well.
Engine Internals & Assemblies
CP STI Forged Pistons +.020 Bore With Rings
Original price was: $973.91.$194.78Current price is: $194.78.
| Weight | 2 kg |
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