New OEM RA Shortblock W- Forged CP EJ257 Pistons 99.5 w- Race Bearings Ej Timing Parts Outfront recommends this stud kit

Outfront recommends this stud kit from 400-600HP range

CAN Frequency 1Mb/s

whenever valavetrain work is being done

continuing the e-Boost tradition of providing class-leading boost control

2004 Subaru Impreza WRX Sti F4 2L EJ20 JDM

New OEM RA Shortblock W- Forged CP EJ257 Pistons 99.5 w- Race Bearings Ej Timing Parts Outfront recommends this stud kitOutfront 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 B25, V25, W25, and N25 cylinder heads found on the 04+ STI and other EJ257 applications. This configuration includes: Custom Outfront Motorsports spec EJ257 CP piston set (22cc) New OEM STI black Nitrited 2017+ crankshaft New OEM STI connecting rods New OEM rod and main