Saenz 4340 Performance Series Connecting Rods Engine:Subaru EJ257 The newest version of this

The newest version of this head takes it a step further with improved airflow throughout the entire lift range

Placement and design of the velocity stacks were rigorously flow tested to ensure maximum delivery of air to the cylinder

and is now available for purchase outside of our engines

these are the parts we would use

Saenz 4340 Performance Series Connecting Rods Engine:Subaru EJ257 The newest version of thisSaenz rods are polished and shot peened before final dimensional finishing of the overall thickness and bore sizing. Polishing relieves stresses incurred on the material from the machining process and shot peening creates an external hardened layer that enhances the rods overall performance. These processes also increase the rods useful life and can be used as an indicator of excessive stresses on the rods after being used. We recommend these rods for