New OEM RA Shortblock W- Forged CP Hybrid Pistons 99.5 w- Race Bearings 99.5 Breather Plumbing and Fittings New OEM Head Castings B25

New OEM Head Castings B25 Intake AVCS

2002+ WRX (Will not fit CVT)

Includes 4140 forged flywheel

SU00304520Which fits the following vehicles:

2011 and later USDM models are supported by our WRX11 USDM ECU

New OEM RA Shortblock W- Forged CP Hybrid Pistons 99.5 w- Race Bearings 99.5 Breather Plumbing and Fittings New OEM Head Castings B25Outfront 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 Nitrited 2017+