New OEM RA Shortblock W- Forged CP EJ255 Pistons 99.5 Accessories The V25B Single AVCS Castings

The V25B Single AVCS Castings are for 2007 STI

pressure plate

The Aluminati pitch stop prevents the transmission from pitching back and fourth during hard acceleration

An external switch can also be used to change between boost groups if required

Basic Specifications:

New OEM RA Shortblock W- Forged CP EJ255 Pistons 99.5 Accessories The V25B Single AVCS CastingsOutfront 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 D25 cylinder heads found on the 06 14 WRX and other EJ255 applications. This configuration includes: Custom Outfront Motorsports spec EJ255 CP piston set (24cc) for D25 Heads New OEM STI Black Nitrite 2017+ crankshaft New OEM STI connecting rods New OEM rod and main