New OEM RA Shortblock W- Forged CP EJ257 Pistons 99.5 w- Race Bearings FA20 Cams G4X features 8 x faster

G4X features 8 x faster communications speed

the AtomX has 512 megabytes data logging and uses the same microcontroller as the entire G4X range

Now with this new addition to the EJ25 user family we now have a manifold specifically to optimize the EJ25 true power output potential

321 stainless steel conducts less heat than 304 stainless steel

100% CNC Drilling & Tapping

New OEM RA Shortblock W- Forged CP EJ257 Pistons 99.5 w- Race Bearings FA20 Cams G4X features 8 x fasterOutfront 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