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This catback system gives the 2.7L EcoBoost Bronco 4 Door a deeper, more aggressive exhaust note while keeping the same high clearance routing as the factory setup. Thermal R&D engineered the piping to tuck tight against the frame so departure angle and ground clearance stay exactly where off road drivers need them.
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2021-2025 | Ford | Bronco | 4 Door, 2.7L V6 |
| Detail | Value |
|---|---|
| Manufacturer Part Numbers | B912-C911-C, B911-C911-C |
| Pipe Diameter | 3 inch |
| Material | 304 Stainless Steel |
| Muffler Finish | Ceramic coated rear muffler |
| Exit Style | Slant cut |
| Drone Control | True Helmholtz Technology |
| Warranty | Lifetime |
| Country of Origin | Manufactured in the USA |
Thermal R&D builds every exhaust system in the USA from 304 stainless steel and backs each one with a lifetime warranty. For the Bronco 4 Door, engineers specifically prioritized keeping the factory high clearance routing intact, since so many Bronco owners run these trucks off pavement, not just on it. The B912-C911-C and B911-C911-C variants share that same frame hugging design with different muffler and tip pairings.
The B911-C911-C is Thermal R&D's catback exhaust system for the 2021 and newer Bronco 4 Door 2.7L, built with a ceramic coated rear muffler for improved heat reduction and a cleaner look.
What is the difference between B912-C911-C and B911-C911-C?Both use the same ceramic coated rear muffler design and mid pipe routing. The B912-C911-C and B911-C911-C designation reflects different muffler and tip pairing options offered on this listing, so confirm the exact configuration at checkout if you have a preference.
Will this exhaust reduce my Bronco's ground clearance?No. Thermal R&D specifically engineered this system to hug the frame in the same location as the factory exhaust, so approach, departure, and ground clearance are not affected.
Does this fit the 2 door Bronco?This listing is for the 4 Door Bronco. Thermal R&D offers a separate version of this exhaust for the 2 Door Bronco with the same 2.7L V6.
Do I need to buy exhaust tips separately?Yes, exhaust tips for this system are sold separately in polished or ceramic coated finish so you can match your preferred look.
Will this exhaust hold up to off road use?Yes, the system is built from 304 stainless steel and tucked high on the frame specifically to withstand off road and overlanding conditions.
Does installation require cutting or welding?No. This is a bolt on installation using the factory hangers with no drilling, cutting, or welding required.
What is covered under the warranty?Thermal R&D backs this system with a lifetime warranty against manufacturing defects in materials and welds.
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