D Series 4-1 Hood Exit Race Exit Header Honda Acura EG EK DC2 Civic D16Y8 D16Z6 Fuel Cut 2004-2020 Subaru WRX STI (6-Speed

2004-2020 Subaru WRX STI (6-Speed Manual)

2004 Acura RSX Type-S

This flange adapter is the special "Slim" flange which will perfectly fit Subaru WRX (2004-2007) & STi (2004-2017) models

Packing Includes:

2014-2015 Audi S4 Prestige Sedan 4-Door

D Series 4-1 Hood Exit Race Exit Header Honda Acura EG EK DC2 Civic D16Y8 D16Z6 Fuel Cut 2004-2020 Subaru WRX STI (6-SpeedD Series 4 1 Hood Exit Race Exit Header Honda Acura D15 D16 EG EK DC2 CRX Si D Series hood exit race header (4 1 Megaphone) features a true 4 1 Megaphone merge to create equal exhaust flow. A megaphone is added next, to release pressure and increase the speed of the exiting exhaust gases. A small reverse cone is placed at the very end to provide a tiny bit of wanted back pressure. This header delivers the best peak horsepower gains while utilizing a 2