FAQs About Axle Back Exhaust Kits for 2021-Present Ford Broncos with 2.3L EcoBoost Engines
What years and engines does this exhaust fit?
This system is designed for the 2021 and newer Ford Bronco equipped with the 2.3L EcoBoost engine. It does not fit the Ford Bronco Sport, which is a different platform entirely.
What does the MRT King of the Hill Axle-Back sound like?
At startup, it produces a sporty, deep rumble that is noticeable without being overbearing. While driving, it fills in with a steady performance whir, and on hard acceleration it opens up into a more aggressive, sport-tuned exhaust tone.
How much drone does this system produce?
MRT rates the drone at a 1 out of 10. While drone is noticeable at certain RPM ranges, most owners find it tolerable and well within the range of a typical performance exhaust on a daily-driven Bronco.
What makes this a turn-down tip, and why does it matter?
The turn-down tip points downward rather than extending rearward like a traditional exhaust tip. This keeps the exhaust tucked high and out of the way, protecting ground clearance and departure angle so the system never interferes with off-road performance.
Will this exhaust improve performance on my Bronco's EcoBoost engine?
Yes. The straight tube design and 2.5-inch T304 stainless steel construction let the 2.3L EcoBoost engine breathe more freely, improving exhaust flow and delivering a genuine sport performance sound and feel.
Do I need a tune after installing this axle-back system?
No tune is required. This is a direct bolt-on replacement that works with the factory ECU on the 2021 and newer Ford Bronco without any additional programming or calibration.
How long does installation take, and what tools do I need?
Installation takes approximately 60 minutes using only common hand tools. All necessary hardware is included, and the system is designed for a straightforward DIY install in a home garage.
How does this compare to the single and dual tip King of the Hill options?
This system uses a turn-down tip, while MRT also offers the same King of the Hill sound profile in a single tip version, part number 90R234, and a dual tip version, part number 90R238. Choose the turn-down tip if ground clearance and a subtle visual profile are a priority.
What if I want a more mellow sound instead of maximum aggression?
MRT also offers the Trail Rated series for Bronco owners who prefer a more mellow tone at cruising speed that grows into full performance sound at wide-open throttle. The Trail Rated turn-down tip is part number 90R232, and a single exit polished or black tip version is part number 90R236.
Can I get this exhaust professionally installed near Plymouth, Michigan?
Yes. MRT offers professional installation at their Plymouth, Michigan facility. Call (734) 455-5807 to schedule an appointment.
