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)

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

1993-1997 Honda Del Sol EG MT

1992-1996 Honda Prelude (H22 / H23)

Applications: K20Z3 and most K24 heads (Excluding K24A1)

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