The 6.4 Hemi offers robust power and a distinctive exhaust note, and the right upgrade can enhance performance, tone, and efficiency. This guide highlights five top exhaust components and systems designed to fit 6.4L Hemi engines in Ram and Challenger applications. Each listing includes fitment considerations and key features to help you compare options quickly.
| Product | Brand | Key Benefit |
|---|---|---|
| BD Diesel Exhaust Manifold Kit | BD | Durable high-silicon ductile iron with longer fasteners |
| MBRP 17-Up Challenger Catback | MBRP | Aluminized steel, dual 3-inch system, quad tips |
| Borla 140641 Cat-Back System | Borla | Stainless steel, bolt-on, all-welded |
| A-Premium Right Side Manifold Kit | A-Premium | Complete manifold kit with gasket and bolts |
| TOTALFLOW 214633 Ram 1500 Muffler | TOTALFLOW | Direct-fit, deep tone, heavy-duty 409 stainless |
Below, five products most relevant to the 6.4 Hemi are explored with fitment notes and performance highlights to assist in a confident buying decision.
BD Diesel Exhaust Manifold Kit For Hemi
BD Diesel’s Exhaust Manifold Kit is constructed from high-silicon ductile iron, delivering strength and heat resistance for heavy-duty use. The kit is designed for Ram 1500/2500/3500 applications from 2009 to 2022 and accounts for engine layout common to 5.7L and 6.4L Hemi configurations. Note that the kit does not fit 2019+ DT body style Rams. Included longer fasteners with spacers help ensure secure mounting under heavy engine loads. This option focuses on improved exhaust flow at the manifold level, which can support performance gains and smoother operation at higher boost or RPM.
MBRP 17-Up Challenger 5.7L/6.2L/6.4L Catback
MBRP’s aluminized cat-back system is tailored for modern Challenger models with 5.7L, 6.2L, and 6.4L Hemi engines. The dual 3-inch configuration with quad tips delivers a noticeable improvement in exhaust flow and a more aggressive tone without excessive drone. It’s a straightforward bolt-on installation designed for street use, balancing performance gains with daily-driver practicality. Compatible years span 2015–2023, offering broad applicability for the 6.4L Hemi platform in Challengers.
BORLA 140641 Cat-Back System For Challenger SRT
BORLA’s 140641 Cat-Back System is crafted from T-304 stainless steel with all-welded construction for durability and a corrosion-resistant finish. It’s designed as a bolt-on upgrade for the 2015–2023 Challenger with the 6.4L Hemi, offering improved exhaust flow and a distinctive, refined exhaust note. The kit emphasizes factory mounting points and a clean, factory-like install while delivering Borla’s performance engineering and a stiffer tone under load. Tips are not included, so compatibility with existing bezels or aftermarket tips should be verified.
A-Premium Right Side Hemi Manifold Kit
The A-Premium manifold kit is a comprehensive option that includes a right-side exhaust manifold with gasket, bolts, and nuts, designed for multiple Ram and Challenger applications. Fitment encompasses Ram 1500 (2013–2018 V8 5.7L, 2500/3500 variants through 2020), Ram 1500 Classic, and 6.4L configurations across several model years. The detailed fitment notes suggest broad compatibility for Hemi-powered trucks and cars, with specific ESA engine designations noted for modern Rams. This kit aims to restore or upgrade valve-train alignment by replacing worn manifolds and fasteners, contributing to improved performance and potentially reduced exhaust leaks.
TOTALFLOW 214633 Ram 1500 Direct-Fit Muffler
TOTALFLOW’s 214633 muffler is crafted for direct-fit installation on Ram 1500 trucks with 5.7L Hemi and factory dual exhaust, and it emphasizes a deep, aggressive tone. Made from heavy-duty 409 stainless steel with fully TIG-welded construction, the muffler is designed for durability and corrosion resistance. The system features a straight-through Y-pipe design intended to maximize exhaust flow while maintaining a straightforward install using factory hangers. It’s suitable for drivers seeking a more pronounced exhaust note without extensive custom fabrication.
Buying Guide
Key purchase considerations when upgrading exhaust on a 6.4 Hemi include fitment accuracy, material durability, tone, and installation complexity. Here are multiple perspectives to help you decide:
- Fitment and compatibility: Confirm vehicle year, model, and engine variant (6.4L Hemi) to avoid incorrect mounting. Some kits target Challenger applications, others Ram pickups, and some are specific to certain body styles or transmission configurations.
- Material and build quality: Stainless steel (304 or 409) typically offers superior corrosion resistance and longevity. Ductile iron manifolds are strong for high-heat environments, but weight and heat management vary by design.
- Performance vs. sound: Cat-back and muffler systems primarily affect tone and airflow; manifolds and gaskets influence valve-train efficiency and exhaust scavenging. Decide whether you want a deeper tone, a more aggressive outlet flow, or a balanced blend for daily driving.
- Installation considerations: Bolt-on systems reduce fabrication needs, while some manifolds require more hands-on work or professional installation. Check whether tips, bezels, or additional hardware are included or must be purchased separately.
- Emission controls and compatibility: Some systems must retain MDS or be compatible with modern engine management features. Verify that chosen parts won’t trigger check-engine issues or require dealer reprogramming.
- Warranty and support: Consider brands that offer robust warranty coverage and readily available customer support for installation questions or fitment clarifications.
In summary, for 6.4 Hemi enthusiasts seeking noticeable performance and tone improvements, options range from bolt-on cat-back systems to direct-fit manifolds and durable mufflers. When evaluating, prioritize fitment for your exact model and year, material longevity, and the sound profile you prefer—deep and aggressive or refined and subtle. A combination of a manifold upgrade and a high-quality cat-back system can yield more noticeable gains, but ensure compatibility with your specific vehicle configuration and any factory emissions equipment.