TR - Twin Scroll Equal Length Header/ Up-Pipe Combo 10mm STI EJ257 MY04-07 - With

STI EJ257 MY04-07 - With Modification

Supplied adapter fitting utilizes an AN-6 adapter fitting for use with aftermarket fuel lines

VIEW THE INNER WORKINGS

These aluminum rings are both stronger and more heat resistant than cheaper plastic hub rings

TR - Twin Scroll Equal Length Header/ Up-Pipe Combo 10mm STI EJ257 MY04-07 - WithNew Old Stock. This header combo was test fitted on a build but never ran. Literally brand new setup! Will also include new gaskets for Install. The Tomioka Racing Twin Scroll Equal Length Exhaust Manifold is designed to elevate Subaru performance with its larger 43mm outer diameter, a significant upgrade from the previous generation's 38mm. This increase in size boosts exhaust flow volume by 28. 5%, resulting in improved flow dynamics and enhanced