
Mustang FN 5.0L V8 2018-23 3in Full System Centre Hotdogs & Rear
MPI AutomotiveRRP$6985.53Mustang FN 5.0L V8 2018-23 3in Full System Centre Hotdogs & Rear Bi-modal Muffler 4in Quad Tip.
View part
Mustang FN 5.0L V8 2018-23 3in Full System Centre Hotdogs & Rear Bi-modal Muffler 4in Quad Tip.
Category: Mufflers and resonators


The MPI Automotive MKFD0318 is the valved one: a 3in full system for the FN Ford Mustang 5.0L V8 (2018) built around a rear bi-modal muffler, with centre hotdogs and a 4in quad tip. The bi-modal valve lets the car switch between a quieter mode and a louder one rather than running a fixed note.
A bi-modal muffler carries an internal valve that opens and closes a path through the silencer. Closed, exhaust takes the muffled route for a more restrained note; open, it takes the freer path and the system speaks up. On this FN Mustang full system the rear bi-modal lets you have a civil drive and a louder mode without swapping hardware — the switchable character that fixed mufflers can't offer.
This is the complete 3in run: centre hotdogs (compact straight-through resonators) tune the mid-section, the rear bi-modal handles silencing and the mode switch, and it finishes through a 4in quad tip. As a full system it replaces more of the factory exhaust than a cat-back alone, so it's the broader change of the FN range.
It's listed to fit the 2018 FN Ford Mustang 5.0L V8. The bi-modal valve needs to be controlled, so how it integrates with your car matters — confirm the exact build and valve operation with the workshop before ordering. Fitment data is a guide, not a guarantee.
Oak Flats Muffler Men supplies and fits valved Mustang systems in-house across the Illawarra. A bi-modal setup adds the valve and its control to the usual routing and tip alignment, so we mock it up on the hoist, sort the valve connection and book the bay once fitment is confirmed.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Oak Flats Muffler Men can check this part against supplier specs, part number, image, RRP and vehicle details for customers around Oak Flats, Shellharbour, Wollongong, Dapto, Albion Park, Kiama and the northern suburbs.
Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.