2021+ Ford Bronco MRT King of the Hill Axle-Back Exhaust with Single Tip

Performance Specs at a Glance

• Loudness Rating: 8 out of 10
• Drone Rating: 1 out of 10 (minimal drone)
• Performance Rating: 8 out of 10
• Tubing: 2.5-inch T304 stainless steel, straight tube design, tucked high
• Tip Style: Single rear exit tip, polished or black matte finish
• Install Time: Approximately 60 minutes
• Tune Required: None
• Application: 2021-2022 Ford Bronco 2.3L and 2.7L EcoBoost (does not fit Bronco Sport)

The MRT King of the Hill Single Tip Axle-Back is widely considered the best-sounding aftermarket exhaust available for the Ford Bronco, built for owners who want the most aggressive street performance sound without compromising the trail capability this SUV is known for. Handcrafted from 2.5-inch T304 stainless steel, this axle-back system delivers a deep rumble at startup, a quiet, non-obnoxious background whir in steady driving, and an aggressive performance note that comes alive the moment you get on the throttle. If you want your Bronco to be heard, this is the system that does it right.

• How does it sound? The MRT Bronco King of the Hill axle back has an aggressive exhaust note that demands attention.
• Is there drone or resonance? The drone is noticeable but tolerable.
• What if I step on it? Wide-open throttle brings out an extreme exhaust roar that screams take no prisoners.

• DIY installation for the backyard mechanic.
• T304 stainless steel construction for the best corrosion resistance.
• Engineered, designed and manufactured in the U.S.

FAQs About Axle Back Exhaust for 2021-Present Ford Broncos with 2.3L and 2.7L EcoBoost Engines

What years and engines does this exhaust fit?

This system fits the 2021 and 2022 Ford Bronco equipped with either the 2.3L or 2.7L EcoBoost engine. It does not fit the Ford Bronco Sport, which is built on a different platform.

What does the MRT King of the Hill Single Tip Axle-Back sound like?

At startup, it produces a noticeable, deep rumble. During steady city and highway driving, that settles into a background whir that is present without being obnoxious or overbearing. Get on the throttle, and the exhaust delivers an aggressive, sporty performance note throughout acceleration.

Is there drone or resonance with this system at highway speed?

Drone is noticeable but stays well within a tolerable range. Many owners report that at highway cruising speed, the exhaust becomes very quiet, almost as if it is not there, while still delivering an aggressive tone in town and under acceleration.

Why is the exhaust tucked high on this system?

The tucked-high mounting position preserves the Bronco's ground clearance and off-road geometry, ensuring the exhaust upgrade does not compromise the vehicle's trail capability or departure angle.

Will this exhaust improve performance on my EcoBoost Bronco?

Yes. The straight tube design allows both the 2.3L and 2.7L EcoBoost engines to breathe more freely, improving exhaust flow and delivering a more responsive, sport-tuned driving character.

Do I need a tune after installing this axle-back system?

No tune is required. This is a direct bolt-on replacement that is fully compatible with the factory ECU and does not require 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. Owners consistently describe the install as straightforward, making it an easy DIY project for the backyard mechanic.

What tip finish options are available?

This system is available with a polished stainless steel single tip or a black matte, high-temperature finish for a more aggressive, blacked-out appearance.

How does this compare to the turn down tip and dual tip King of the Hill options?

This single tip version offers the same aggressive King of the Hill sound profile as the turn down tip, part number 90R230, and the dual tip version, part number 90R238. Choose this single tip configuration if you want the classic rear exit look with one prominent tip rather than a turned-down or dual exit style.

What if I want a more mellow sound instead of maximum aggression?

MRT also offers a Trail Rated series for Bronco owners who prefer a more relaxed cruising tone that grows into full performance sound at wide-open throttle. Options include a turn-down tip, part number 90R232, and a single exit tip, part number 90R236.

• Can I install this myself? Yes, MRT engineers this Premium Exhaust System for a simple do-it-yourself (DIY) installation.
• How long does it take to install? Installation time is about 1 hour and requires only common hand tools.
• What is included? All necessary hardware included.

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