The Dodge Challenger Hellcat combines brutal power with a distinct exhaust note. This guide highlights five top exhaust options designed to maximize flow, deepen sound, and preserve reliability on 2015–2023 Hellcat variants. Each entry includes installation notes, material quality, and performance gains to help you compare options without guessing.
| Product | Brand | Compatibility |
|---|---|---|
| MBRP 17-Up Dodge Challenger 5.7L/6.2L/6.4L Aluminized Catback Exhaust | MBRP | 2015–2023 Challenger HEMI 5.7L, 6.2L, 6.4L |
| Flowmaster American Thunder Cat-Back Exhaust | Flowmaster | 2015–2023 Challenger Hellcat, Demon, SRT392, R/T Scat-Pack |
| BORLA 140646 Cat-Back Exhaust System for Challenger Hellcat | Borla | 2015–2023 Dodge Challenger SRT Hellcat (6.2L) |
| BORLA 140449 Cat-Back Performance Exhaust for Durango | Borla | Durango V8 (general fit, not specific to Challenger Hellcat) |
| 2015-2023 6.2L/6.4L Charger/Challenger Axle Back Exhaust | B2 Fabrication | Charger/Challenger 6.2L/6.4L |
MBRP 17-Up Dodge Challenger Catback Exhaust
MBRP’s aluminized catback system uses a 3-inch dual setup with quad tips for a balanced blend of performance and street manners. The kit targets common Challenger HEMI engines (5.7L, 6.2L, 6.4L) and is designed for straightforward bolt-on installation. Aluminized steel offers strong resistance to corrosion in typical driving conditions while delivering a deeper tone and improved exhaust flow over stock. This option is well-suited for daily driving that still seeks enhanced sound and throttle response. The included 4-inch OD dual outlets contribute to an aggressive exit while maintaining a practical street sound profile.
Flowmaster American Thunder Cat-Back Exhaust
Flowmaster’s American Thunder system features an exclusive Scavenger X-pipe intended to maximize horsepower and torque. The kit uses a large 3.00-inch mandrel-bent dual exhaust architecture, which helps improve flow over stock manifolds and pipes. It includes dummy valve stands to accommodate OE actuators, preserving control and ease of use with modern electronic exhaust controls. This setup is designed to balance a robust, deep exhaust tone with everyday drivability, making it a strong pick for Hellcat variants seeking a noticeable step up in sound and performance without excessive cabin drone.
BORLA 140646 Cat-Back Exhaust System for Hellcat
Borla’s 140646 cat-back system is crafted from T-304 stainless steel and is designed for bolt-on installation with all-welded construction. The material choice emphasizes durability and consistent resistance to corrosion, while Borla’s engineering aims to optimize flow and exhaust scavenging. The system is compatible with Hellcat platforms and is favored by enthusiasts seeking a refined, aggressive tone with proven durability and a reputable warranty. The all-wolled design emphasizes a snug fit with factory bezels and valances when applicable.
BORLA 140449 Cat-Back for Durango
This Borla system for Durango is built using T-304 stainless steel with bolt-on installation and all-welded construction. While not a Challenger Hellcat-specific product, Durango exhausts from Borla share the same core principles of high-flow design, durable materials, and enhanced tone. For readers considering cross-application components or sharing Borla’s performance approach across a related Dodge platform, this option demonstrates the brand’s emphasis on durability and performance through robust construction and optimized flow paths.
2015-2023 6.2L/6.4L Charger/Challenger Axle Back
This axle-back system by B2 Fabrication focuses on reducing weight and backpressure while improving throttle response. It claims gains in torque and horsepower and delivers a more aggressive muscle car tone. Although not a full cat-back, axle-back upgrades can still meaningfully improve the exhaust flow and the character of the exhaust note for Hellcat-equipped Chargers and Challengers. Prospective buyers should verify compatibility with their specific trim and bumper configurations to ensure proper fitment and tone balance.
Truck Exhaust Kits Cat-Back 2.5″ Dual Kit
This cat-back 2.5-inch dual exhaust kit is designed for broader vehicle applications and includes a Flowmaster Super 40 muffler with a corner exit, which can influence sound characteristics and flow advantages in certain builds. While not a dedicated Hellcat setup, it provides an alternative path to improve exhaust flow and a distinct exhaust tone for those considering aftermarket versatility across trucks and performance cars. Check fitment carefully for a Challenger or Charger configuration to avoid misfitment.
Northeastern Exhaust Dual Performance Direct Fit Muffler
Northeastern Exhaust offers a dual performance direct-fit muffler designed to boost horsepower by improving exhaust flow and reducing backpressure. The product emphasizes improved engine response and potential fuel economy benefits by optimizing exhaust dynamics. It positions itself as a practical upgrade for performance-minded drivers who prefer a straightforward bolt-on approach with durable stainless components and an emphasis on efficiency alongside power gains.
Buying Guide: Key Considerations For Hellcat Exhaust Upgrades
- Material Quality: Stainless steel (304/409) vs aluminized options affects durability and corrosion resistance. Stainless variants typically offer longer life in harsh driving conditions and better resale value.
- Flow vs Sound Balance: Cat-back systems emphasize flow and tone. Decide whether you want a deeper, louder tone or a milder improvement with reduced drone inside the cabin.
- Installation Complexity: Bolt-on designs with minimal welding are easier for DIY installs, while all-welded or custom-fit systems may require professional installation.
- Compatibility: Confirm engine size (5.7L, 6.2L, 6.4L) and body platform (Challenger Hellcat vs Durango) to ensure proper fit and clearance with factory components like bezels and valances.
- Warranty and Brand Support: Reputable brands such as Borla, Flowmaster, and MBRP provide warranties and documented performance data. This can impact long-term reliability and service options.
- Weight and Throttle Response: Some upgrades claim weight reduction or improved throttle response. Consider whether your priority is peak horsepower, drivability, or a balanced daily-driver experience.
- Aesthetics: Tip style, exit location, and visual fitment should align with your preferred look, including whether to use factory bezels or aftermarket bezels for a clean, integrated appearance.
- Sound Tuning with OE Systems: If your vehicle has active exhaust controls or valve systems, ensure the chosen exhaust supports or integrates with those controls to maintain seat-of-the-pants feel without compromising legality or warranty.
- Driving Context: For track-focused builds, prioritize maximum flow and minimal backpressure; for daily drivers, balance tone with comfort and reliability.