The Borla ATAK cat-back exhaust system is a 2.75 inch diameter design that delivers the aggressive ATAK sound with no interior drone for the 2015-2023 Dodge Challenger SRT 392 and Scat Pack 6.4L. It includes MDS (multi-displacement system) valve simulators that eliminate the MDS valves for maximum flow while avoiding dash warning lights, plus a merge X-pipe. It is built from premium T-304 austenitic stainless steel with patented straight-through, multi-core technology. Ultra-smooth mandrel bends maximize flow and power, and precision CNC manufacturing ensures an accurate fit. Because it mounts behind the factory catalytic converters, this system is 50-state emissions legal. Tips are not included; use the factory valance and tips. Like every Borla exhaust, it is handmade in the USA and backed by the Borla Million-Mile Warranty.
Specifications:
- System type: Cat-Back exhaust
- Sound level: ATAK (aggressive)
- Material: T-304 austenitic stainless steel
- Construction: patented straight-through, multi-core
- Tubing diameter: 2.75 inch
- Valves: includes MDS valve simulators (eliminate MDS valves)
- Includes merge X-pipe
- Tips: not included, uses factory valance/tips
- Emissions: 50-state emissions legal
- Made in the USA
- Part number: 140678
Vehicle Applications:
- 2015 Dodge Challenger
- 2016 Dodge Challenger
- 2017 Dodge Challenger
- 2018 Dodge Challenger
- 2019 Dodge Challenger
- 2020 Dodge Challenger
- 2021 Dodge Challenger
- 2022 Dodge Challenger
- 2023 Dodge Challenger
FAQ
Which vehicles does the Borla 140678 cat-back fit?
It fits 2015-2023 Dodge Challenger SRT 392, R/T 392, R/T Scat Pack, T/A 392, and related 6.4L models.
What tubing diameter is this system?
It is a 2.75 inch diameter cat-back system.
Is this exhaust 50-state emissions legal?
Yes. It mounts behind the factory catalytic converters, so it is 50-state emissions legal.
Does it include exhaust tips?
No. Tips are not included; the system uses the factory valance and tips.
How does the ATAK sound compare to S-Type and Touring?
ATAK is Borla's most aggressive sound level, louder than the mid-level S-Type and the mild Touring tuning.

