New OEM RA Shortblock W- Forged CP Hybrid Pistons 99.5 Wire In ECU's Direct Spark

Direct Spark

All of these items help to return more power for you to enjoy

Smaller design = weight reduction throughout the entire valvetrain system

Max boost: 35 psi

No rubber parts that can sag and stay open after repeated heat cycling

New OEM RA Shortblock W- Forged CP Hybrid Pistons 99.5 Wire In ECU's Direct SparkOutfront Motorsports Stage 1 RA shortblock is for that added Protection against ring land failure on a lightly modified car. These custom pistons are made specifically for use with the S20 cylinder heads found on the 02 05 WRX and other EJ20 applications without cylinder head combustion chamber modification. This configuration includes: Custom Outfront Motorsports spec Hybrid CP piston set (25. 5cc) for EJ20 Heads New OEM STI black Nitrite 2017+