Next Level Performance
May 1, 2026 • 12 min read
The 2021+ Ford Bronco came back ready for the trail, but Ford left the exhaust note locked behind a quiet, restrictive factory muffler. A proper cat-back exhaust for your 2021+ Ford Bronco wakes up the 2.3L and 2.7L EcoBoost mills, adds high-clearance routing for off-road work, and finally lets that turbocharged growl come through. After fielding hundreds of Bronco builds out of our Tampa, FL shop, we narrowed the field to six cat-back systems that consistently deliver: AWE Tuning, MBRP, Roush, Borla, aFe Power, and Magnaflow. Below is our full buyer’s guide with prices, sound profiles, dyno data, and the off-road clearance details that matter.
Our Verdict
Top Pick: AWE Tuning 0FG Single Rear Exit Exhaust w/Bash Guard
For most 2021+ Bronco owners running the 2.3L or 2.7L EcoBoost, the AWE 0FG hits the sweet spot: T304L stainless construction, 180-Technology drone cancellation, a deep aggressive WOT bark, and an integrated Bash Guard for trail use. The No-CEL guarantee and AWE’s premium fit-and-finish put it above lower-cost alternatives without crossing into Magnaflow Overland pricing.
Shop Our Top Pick →The 6 Best 2021+ Ford Bronco Cat-Back Exhausts at a Glance
Every cat-back on this list is a real bolt-on for the 2021–2026 Ford Bronco 2.3L EcoBoost or 2.7L EcoBoost (some are body-style or engine specific — verify your VIN before you buy). We picked them based on tubing material, sound character, off-road clearance, dyno-verified gains where available, and warranty coverage. Here is the quick comparison — full reviews follow below.
| System | Material | Sound | Best For | Price |
|---|---|---|---|---|
| AWE 0FG Single Rear Exit | T304L | Aggressive, drone-free | Best Overall | $1,030 |
| MBRP 3in T304 | T304 | Aggressive, throaty | Best Value | $770 |
| Roush Performance Kit | T304 | Deep, throaty | Brand Loyalists | $700 |
| Borla Touring Cat-Back | T-304 | Mellow, refined | Daily/Overland | $1,000 |
| aFe Apollo GT 3in | 409 SS | Deep, raspy | Budget Pick | $462 |
| Magnaflow Overland Series | Stainless | Tunable NDT | Off-Road Builds | $1,266 |
1. AWE Tuning 0FG Single Rear Exit Exhaust w/Bash Guard — Best Overall
AWE’s 0FG (Zero Fender-to-Ground) platform was engineered specifically for the 2021+ Ford Bronco, with a tucked routing path that keeps the system high and tight against the chassis. The single rear exit version we recommend uses 3-inch T304L stainless tubing, a custom AWE-designed straight-through resonator, and the brand’s 180-Technology pattern that uses opposing wave geometry to cancel cabin drone in the 1,800–2,100 RPM cruise range. AWE publishes dyno results showing roughly +4 wheel horsepower and +3 wheel torque on the 2.7L twin-turbo, with similar gains on the 2.3L. Mostly though, you feel it in throttle response — the engine spools harder and the turbo whoosh comes through cleanly under boost.
The integrated Bash Guard is the feature that puts this system over the top for trail-bound Broncos. It functions as a skid-plate-style shield protecting the muffler housing during rock crawling and high-angle climbs — something none of the other premium systems on this list include from the factory. The 4.5-inch double-wall slash-cut chrome silver tip looks aggressive without screaming “ricer,” and AWE backs the system with a Lifetime warranty plus their No Check Engine Light guarantee when installed properly on an otherwise-stock vehicle.
AWE 0FG Key Specifications
What We Like
- + Integrated Bash Guard for off-road protection
- + Active 180-Technology drone cancellation
- + No-CEL guarantee + Lifetime warranty
- + Premium fit and finish, dyno-verified gains
Things to Consider
- – Higher price than MBRP or aFe
- – Single-tip styling won’t suit dual-exit fans
The integrated AWE Bash Guard shields the muffler during rock crawling.
2. MBRP 3in T304 Catback Exhaust — Best Value Performance
If you want the most aggressive Bronco cat-back per dollar, MBRP’s 3-inch T304 stainless system is the answer. MBRP claims gains of +17 horsepower and +14 lb-ft of torque on the 2.7L engine, plus up to a 93% increase in exhaust flow on 2.3L applications. The T304 stainless construction matches what AWE and Borla use, but at $260 less. Mandrel-bent tubing keeps internal flow smooth, and the 4-inch dual-wall angle-cut tips finish the system with the right amount of street presence.
Sound character is where MBRP separates itself: this system is loud and proud. At idle you get a deep V8-adjacent burble from the EcoBoost twins; under throttle the system opens up into a hard, aggressive bark that announces the Bronco from a block away. Some owners on Bronco6G report mild cabin drone in the 1,800–2,100 RPM range during steady highway cruising — if you spend most of your time at 70+ mph, the AWE 0FG’s drone cancellation may be worth the upcharge. For weekend warriors and trail rigs, MBRP’s budget-vs-volume tradeoff is hard to beat.
3. Roush Performance Exhaust Kit — Best Brand-Authentic Tone
Roush has been tuning Ford performance vehicles for decades, and that pedigree shows up in the 2021+ Bronco kit. The system uses 3-inch T304 stainless tubing into a single rear-exit configuration with a removable black-coated tip stamped with the Roush R logo. Sound character leans deep and throaty, with the kit accentuating the 2.7L EcoBoost’s turbo whoosh more than any other system on this list — if you love hearing your turbos work, this is the pick. The black-tipped finish keeps the rear end stealthy.
A note on classification: depending on the specific Roush SKU and configuration, this kit can behave more like an axle-back than a full cat-back — the gain numbers are correspondingly smaller than a true cat-back from MBRP or AWE. If you’re a Roush brand loyalist or already running other Roush hardware on your Bronco, the matched aesthetic and bolt-on simplicity are worth the tradeoff. Be ready to pull the rear bumper cover during install on the 2.7L — the OE rear hanger bracket needs to be replaced with a Roush-supplied piece.
4. Borla Touring Cat-Back — Best Drone-Free Daily Driver
Borla’s Touring tune is the right call when your Bronco is a daily driver, an overland rig, or both. The 2.75-inch T-304 austenitic stainless system sits noticeably quieter than the AWE or MBRP — barely louder than the factory exhaust at idle, with a warm, throaty character that builds slowly under load instead of barking the moment you open the throttle. Borla calls this their Climber Cat-Back configuration: the brushed turndown tip and high-clearance routing are tuned for off-roading, overlanding, and rock crawling, and the system stays well above the rear axle line.
The headline feature is Borla’s Million-Mile Warranty plus their No-Drone Guarantee. Borla doesn’t just claim the system is drone-free — they’ll back it up. If you want a Bronco exhaust that won’t make your spouse hate road trips, this is the one. The tradeoff is that the sound bump over stock is the smallest on this list. Owners who want their Bronco to sound “mean” will likely find Borla Touring too refined; if you want growl, look at the MBRP or aFe Apollo instead.
I drove from Tampa to Asheville on the Borla Touring and never wished it were quieter. Just enough character at WOT, dead silent at cruise. Sold me on the No-Drone Guarantee.
— J. Reyes | Verified Buyer | ★★★★★
5. aFe Apollo GT 3in 409SS Cat-Back — Best Budget Pick
At $462, the aFe Apollo GT undercuts every other system on this list by a wide margin while still delivering 3-inch mandrel-bent tubing and a high-flow stainless muffler. The catch is the material: aFe uses 409 stainless on the Apollo GT line versus T304 on the premium systems. 409 is technically stainless but contains less chromium and nickel, which makes it more prone to surface corrosion in salt-belt climates — not a concern for our Tampa, FL customers, but something to weigh if you live somewhere that salts the roads.
Sound-wise, the Apollo GT is deep and aggressive, leaning toward raspy under throttle — closer in character to the MBRP than the refined Borla. The hi-tuck tip is a real benefit for trail rigs running aggressive departure angles. If your budget is tight and you live in a non-salt-belt state, this system delivers genuine premium-tier sound and clearance for less than half the price of the Magnaflow Overland.
High-clearance side-exit routing keeps the system out of the rocks.
6. Magnaflow Overland Series — Best for Off-Road Builds
Magnaflow built the Overland Series specifically for off-road customers, and it shows. The system is engineered around 3D scans of the entire Bronco undercarriage so the routing tucks tighter than anything else available — better departure and breakover angles than even the AWE 0FG. The single 2.5-inch high-clearance side exit prioritizes ground clearance over peak flow, and Magnaflow’s straight-through muffler is paired with the brand’s tunable No Drone Technology (NDT) quarter-wave resonator, plus a cap resonator. That means owners can swap resonator caps to dial sound from moderate to aggressive without buying a different system.
This is the right system for serious overland builds where ground clearance and tunable sound matter more than peak horsepower. The 2.5-inch outlet will leave a few horsepower on the table compared to the 3-inch MBRP or aFe systems, but for a vehicle that spends weekends on the trail rather than the dyno, the off-road advantages outweigh the difference. Note: this Overland SKU fits the 2.3L only — 2.7L owners should look at Magnaflow’s Street Series or other systems on this list.
Magnaflow’s tunable NDT resonator lets you dial in sound character.
How Much Horsepower Does a Cat-Back Add to a 2021+ Ford Bronco?
A cat-back exhaust on the 2021+ Bronco delivers a realistic 3 to 17 horsepower gain at the wheels or crank, depending on the system and which engine you have. AWE’s published dyno on the 0FG shows roughly +4 wheel horsepower and +3 wheel torque on the 2.7L EcoBoost. MBRP claims +17 horsepower and +14 lb-ft on the same engine, measured at the crank. Most owners report that the seat-of-the-pants feel comes more from improved throttle response and reduced backpressure than from peak power numbers — the turbos spool faster and the engine feels more eager throughout the rev range.
If you want measurable power gains beyond the cat-back, plan to pair the system with a cold-air intake and an ECU tune. The combination of intake plus cat-back plus tune is where the 2.3L and 2.7L EcoBoost engines really come alive — gains of 25–40 wheel horsepower are commonly reported with all three modifications.
Installation: What to Expect
Cat-back installation on the 2021+ Bronco is among the easier exhaust jobs out there — if you’ve installed a cat-back on a Mustang or F-150, you already have the skills. Expect roughly 1 to 2 hours of labor for a single-rear-exit system, longer if your kit requires bumper cover removal. Here are the gotchas we’ve seen most often in our Tampa shop:
- Spray penetrating oil the night before. Factory band clamps and rubber hanger isolators seize after a few thousand miles. PB Blaster the night before saves cracked exhaust hangers on install day.
- Bumper cover removal for dual-exit and Roush systems. AWE 0FG dual rear exit and the Roush kit require dropping the rear bumper cover and replacing the OEM hanger bracket. Budget 2.5–3 hours for these systems, not the “1 hour bolt-on” some manuals claim.
- Unplug the park sensor harness before pulling the bumper. Several trim levels have wiring routed through the bumper cover that will tear if you try to drop the cover with the harness still connected.
- Body-style and engine specificity. Several SKUs are 2-door-specific, 4-door-specific, or engine-specific despite seeming to share fitment. Always verify the part number against your VIN before installation.
- Tip alignment is the last step. Loosely install the entire system, then tighten clamps from front to back, leaving tip alignment for last to avoid bumper cover rub.
Frequently Asked Questions
Will a cat-back exhaust void my Ford Bronco warranty?
No. The Magnuson-Moss Warranty Act protects you — Ford must prove the cat-back caused a specific failure to deny that warranty claim. Your engine and powertrain warranty stays intact when you install a properly engineered cat-back like AWE, Borla, MBRP, or any other system on this list.
Will a cat-back trigger a check engine light on my Bronco?
A properly installed cat-back should not trigger a CEL because it sits downstream of the catalytic converters and oxygen sensors. AWE Tuning publishes a No-CEL Guarantee, and Borla’s system is similarly emissions-friendly. If you do see a light after installation, double-check your hanger alignment and exhaust band clamps for leaks before assuming the system is at fault.
How much horsepower does a Bronco cat-back add?
Realistic gains range from +3 to +17 horsepower depending on the system and engine. AWE’s 0FG dyno shows about +4 wheel horsepower on the 2.7L EcoBoost. MBRP claims +17 hp at the crank on the same engine. Most owners feel the difference more in throttle response and turbo spool than in peak power numbers.
Will my MPG drop with a cat-back exhaust?
No meaningful change. Most Bronco owners report fuel economy variation of plus or minus 0.1 to 0.5 MPG after installing a cat-back — well within normal driving variation. Some report tiny gains from reduced backpressure. Don’t buy a cat-back for fuel economy reasons; do it for sound and feel.
Which Bronco cat-back has no drone?
Three systems on this list are engineered specifically against highway drone: the AWE 0FG with 180-Technology drone cancellation, the Borla Touring with their No-Drone Guarantee, and the Magnaflow Overland Series with their tunable NDT resonator. If you spend significant time at 65–75 mph cruise, pick one of these three.
What is the difference between cat-back and axle-back on a Bronco?
A cat-back replaces everything from the catalytic converter to the exhaust tip — bigger sound change, more flow, higher cost. An axle-back only changes the muffler and tip assembly behind the rear axle — subtler sound change, easier install, lower cost. Cat-backs deliver the full experience; axle-backs are a budget upgrade if you mostly want a different tip note.
Will my Bronco cat-back fit with the modular bumper or aftermarket rear bumper?
Most high-clearance side-exit cat-backs — including the MBRP, aFe Apollo Hi-Tuck, Magnaflow Overland, and Borla Climber — exit before the rear bumper, so they’re generally compatible with both factory and aftermarket bumpers. Rear-exit systems like the AWE 0FG dual-rear and the Roush kit require a compatible bumper cutout. Verify your rear bumper configuration before ordering.
Is a cat-back exhaust legal in California (CARB) on my Bronco?
Cat-back exhaust systems do not affect emissions hardware (catalytic converters and O2 sensors are upstream), so they are generally street-legal in all 50 states including California. However, sound output may exceed CA noise ordinances on some systems — check the spec sheet for SAE J1492 dB ratings if you live in California.
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