The Borla S-Type axle-back exhaust system is a 2.75 inch diameter design developed specifically for the 2022-2023 Jeep Grand Wagoneer 6.4L V8. It delivers the classic S-Type sound without any drone inside the vehicle and exits through 2.75 inch turn down tips. Borla cat-back and axle-back systems use patented straight-through, multi-core technology with ultra-smooth mandrel bends and CNC manufacturing for increased exhaust velocity, added power, and an accurate bolt-on fit. Built from premium T-304 austenitic stainless steel, superior to T-400 series materials such as 409, this axle-back mounts behind the factory catalytic converters and is 50-state emissions legal. Every Borla exhaust is handmade in the USA and backed by the Borla Million-Mile Warranty.
Specifications:
- System type: S-Type axle-back
- Sound level: S-Type, no cabin drone
- Material: T-304 austenitic stainless steel
- Technology: patented straight-through, multi-core
- Tubing diameter: 2.75 inch
- Tips: 2.75 inch turn down
- Emissions: 50-state emissions legal
- Made in the USA
- Part number: 11990
Vehicle Applications:
- 2022 Jeep Grand Wagoneer
- 2023 Jeep Grand Wagoneer
FAQ
What vehicles does the Borla 11990 axle-back exhaust fit?
It fits the 2022-2023 Jeep Grand Wagoneer equipped with the 6.4L V8.
Is the Borla 11990 exhaust street legal?
Yes. It is an axle-back system that mounts behind the factory catalytic converters and is 50-state emissions legal.
What type of tips does it use?
The system exits through 2.75 inch turn down tips rather than visible rear tips.
Where is the Borla 11990 made and is it warrantied?
It is handmade in the USA from T-304 stainless steel and is covered by the Borla Million-Mile Warranty.

