07/09/2026
S550 owners — more Stage 1 journey 2018–2023 Mustang GT.
Same full bolt-on package — intake, long-tube headers, cat-back, tune — with one upgrade: the active-valve exhaust.
Quiet when you want it. Loud when you don't. Still the ceiling of Stage 1 power before forced induction.
Included:
- JLT Black Textured Cold Air Intake w/Red Filter (tune req.). MPN CAI-FMG-18
- Kooks 1‑7/8 in. Long Tube Catted Headers. MPN 1151H421
- Corsa 3in Cat‑Back, Dual Rear Exit w/ 4in Polished Tips. MPN 21001
- SCT X4 Power Flash Programmer (EO Certified). MPN 7015PEO
Come take a look 👉 Link in bio.