Borla Cat-Back Exhaust
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Borla Cat-Back Exhaust - Ford Mustang GT Coupe (S550) - 3in Active Exhaust Quad Tips 2018+
This Borla 3in cat-back exhaust was designed for the 2018-on Ford Mustang GT Coupe (S550) and includes Active Exhaust valves. It uses a Merge X-pipe for improved performance and sound and exits through dual 4in round tips on each muffler. Choose S-Type (sporty) or ATAK (the most aggressive); both are tuned to avoid drone in the cabin.
Note: Has Active Exhaust valves for cars with factory Active Exhaust. Also fits the Bullitt. Not recommended for Convertibles. 3in to 2.25in adapters are included. Care tip: stainless steel polish is not recommended on the black chrome tips. Designed around the US left-hand-drive Mustang. The underbody layout is shared with the factory right-hand-drive Australian Mustang, so cat-backs generally fit, but please confirm valance and tip cut-outs and active exhaust fitment with our team before ordering. Installation by a professional is recommended.
Features
- 3in high-flow mandrel-bent T-304 stainless steel system
- Active Exhaust valves
- Merge X-pipe for improved performance and sound; ATAK versions add Polyphonic Harmonizer technology
- Dual 4in round tips on each muffler in bright chrome, black chrome, carbon fibre or carbon fibre with black anodised centre
- Borla 3-year limited warranty
Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Ford | Mustang GT Coupe | S550 | 2018+ | 5.0L V8; Active Exhaust; incl. Bullitt |
Technical Specifications
| Spec | Value |
|---|---|
| Brand | Borla |
| System type | Cat-back exhaust with Merge X-pipe |
| Pipe diameter | 3in |
| Material | T-304 stainless steel |
| Tips | Dual 4in round on each muffler: bright chrome, black chrome, carbon fibre (bright centre) or carbon fibre (black anodised centre) |
| Sound level(s) | S-Type / ATAK |
| Exit style | Quad rear |
| Active exhaust | Retains factory active/valved exhaust |
| Part number(s) | 140742, 140742BC, 140742CF, 140742CFBA, 140743, 140743BC, 140743CF, 140743CFBA |
| S-Type / Polished – Part number | 140742 |
| S-Type / Black Chrome – Part number | 140742BC |
| S-Type / Carbon Fibre – Part number | 140742CF |
| S-Type / Carbon Fibre Black – Part number | 140742CFBA |
| ATAK / Polished – Part number | 140743 |
| ATAK / Black Chrome – Part number | 140743BC |
| ATAK / Carbon Fibre – Part number | 140743CF |
| ATAK / Carbon Fibre Black – Part number | 140743CFBA |
No instructions available for this product.

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