New OEM RA Shortblock W- Forged CP EJ257 Pistons 99.5 w- Race Bearings Ej Timing Parts and is quantified using a

and is quantified using a technique called Least Squares Linear Regression – Which is a fancy way of saying straight line approximation

*Requires “A” & “B” looms or “A” & “B” connector kits

whenever valavetrain work is being done

along with advancements such as single precision floating point format fuel tables

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 and is quantified using aOutfront 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