The Borla S-Type cat-back exhaust system fits the 2015-2023 Dodge Challenger with the 6.4L V8 engine. It replaces the exhaust from the catalytic converter back, uses 2.75-inch diameter piping, delivers the classic S-Type sound with no drone inside the vehicle, includes a merge X-Pipe, and is listed for vehicles with exhaust valves.
Part number: 140640
Borla cat-back exhaust system.
The system delivers the classic S-Type sound with no drone inside the vehicle. This system INCLUDES functioning MDS (multi-displacement system) valves. BORLA® system does NOT include tips. Use factory bezel/ valance. BORLA® Cat-Back™ & Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA® Sound of Power respected by motoring enthusiasts everywhere. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical controlled (CNC) manufacturing ensures an accurate fit.
A cat-back system replaces everything behind the catalytic converter and leaves emissions equipment in place.
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Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | Borla |
| Part number | 140640 |
| Material | T-304 Stainless Steel |
| Shipping carton | 45 × 31 × 11 in (114 × 79 × 28 cm) |
| Shipping weight | 28.1 kg (62 lb) |
| Construction | All Welded |
| Tip / outlet finish | No Tips Included. Use Factory Bezel, Valance, Or Tips. |
| Tail pipe material | Stainless Steel |
| Tail pipe diameter | 2.750 in |
| System type | Cat Back |
| Exhaust type | Cat-Back System |
| Outlet outside diameter | 2.750 in |
| Muffler type | Straight-Through |
| Inlet inside diameter | 2.750 in |
| Grade type | Performance |
| Exit style | Single Split Rear Exit |
| Exit position | Rear |
| Tubing diameter | 2.750 in |
| Category | Exhaust & Performance |
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