ATAK sound level. Borla built this cat-back system specifically for the 6.4L V8 Jeep Wrangler Rubicon 392. It uses Borla's patented SwitchFire technology, which eliminates the turbulent center intersection of a standard X-Pipe and blends the combustion pulses from both sides of the engine for improved performance and a custom sound. A 2.75 inch inlet flows into 3 inch pipes and exits through dual 4 in round tips on each side. The system includes Dual-Mode valves so the sound can be customized, and its T-304 stainless steel construction adds durability over the stock exhaust. Ultra-smooth mandrel bends and CNC-precise manufacturing ensure an accurate fit. The system ships in two boxes. The entire muffler assembly is coated black with a high-temperature finish, and it exits through dual 4 in round black-coated T-304 stainless steel tips. Because it installs behind the factory catalytic converters, this cat-back system is 50-state emissions legal. Like all Borla exhaust, the system is handmade in the USA and backed by the Borla Million-Mile Warranty.
Specifications:
- System type: Cat-Back exhaust
- Entire muffler assembly coated black with high-temperature finish
- Features SwitchFire technology
- Features Dual-Mode valves
- Inlet 2.75 in into 3 in pipes
- Tip: dual 4 in round black-coated T-304 stainless steel per side
- Sound level: ATAK
- Material: T-304 stainless steel
- Ships in 2 boxes
- Emissions: 50-state emissions legal
- Made in the USA
- Part number: 140893CB
Vehicle Applications:
- 2021 Jeep Wrangler Unlimited Rubicon 392
- 2022 Jeep Wrangler Unlimited Rubicon 392
- 2023 Jeep Wrangler Rubicon 392
- 2024 Jeep Wrangler Rubicon 392
- 2025 Jeep Wrangler Rubicon 392
- 2026 Jeep Wrangler Rubicon 392
FAQ
Is this cat-back system street legal?
Yes. It installs behind the factory catalytic converters and is 50-state emissions legal, so it is street legal in all 50 states.
Which Jeep Wrangler does this fit?
It fits the 6.4L V8 Jeep Wrangler Rubicon 392, including 2021-2022 Unlimited Rubicon 392 and 2023-2026 Rubicon 392 and Rubicon 392 Final Edition models.
How does the ATAK sound level compare?
ATAK is Borla's most aggressive sound level, delivering a loud, head-turning note with no drone.
What are SwitchFire and Dual-Mode valves?
SwitchFire is a patented crossover design that blends combustion pulses from both banks for improved performance and sound. Dual-Mode valves let the driver customize the exhaust volume. An uncoated system with polished tips is also available.
Where is this Borla exhaust made and what warranty does it carry?
Borla exhaust systems are handmade in the USA from T-304 stainless steel and are covered by the Borla Million-Mile Warranty.

