Kooks long-tube headers and catted connection pipes for 2015–2024 Ford Mustang GT 5.0L use 1-7/8in primaries and mate to OEM adapters to increase exhaust flow over stock manifolds. Manufactured from T304 stainless steel in the USA and dyno-tested, the system is offered with a limited lifetime warranty to the original purchaser. Standard race cats included are not recommended for forced-induction applications.
Kooks 15-24 Ford Mustang GT V8 5.0L 1-7/8in SS Headers w/ Catted Connection Pipe