A strong 6.4 Hemi exhaust choice matches your exact vehicle and desired system style, whether you want a cat-back for a Challenger, an axle-back for a Charger, or a truck-specific setup. The Borla 140641 leads this comparison for its stated fit on 2015–2023 Challenger SRT 392 and Scat Pack 6.4L models, T-304 stainless-steel construction, bolt-on installation and no-drone guarantee. Fitment is the first filter: these six listings cover different Dodge models, model years and even Ram trucks, so they are not interchangeable.
System type matters, too: the roundup includes cat-back, axle-back and exhaust-suite listings with very different levels of detail. Use the comparison to identify a promising match, then confirm the vehicle, drivetrain, exhaust configuration and tip requirements before ordering.
The Borla 140641 is the strongest overall choice for a listed 6.4 Hemi Challenger application. Its stated fit covers 2015–2023 Dodge Challenger SRT 392 and 392 Hemi/Scat Pack 6.4L V8 models, and the listing specifies a cat-back system, T-304 stainless steel, bolt-on installation and a no-drone guarantee. It does not include tips and calls for the factory bezel or valance, so verify those details before buying.
For Charger fitment or an axle-back approach, compare the other vehicle-specific listings.
Our Top Picks
Best OverallIts stated fit covers 2015–2023 Challenger 6.4L SRT 392 and Scat Pack models, with T-304 stainless steel, bolt-on installation and a no-drone guarantee.
View on Amazon
Best Axle-BackThe listing names 2015–2023 6.4L Challenger and Scat Pack Charger fitment and specifies a cut-and-clamp design with factory-style hangers.
View on Amazon
Best Black TipsThis non-resonated Touring Edition is listed for 2015+ Challenger 6.4L models and comes with quad black tips.
View on Amazon- Best Ram Fit aFe Power Ram Exhaust
Compare these exhaust options by vehicle and configuration
| # | Product | Weight | Buy |
|---|---|---|---|
| 1 | 1. Borla 140641 Cat-BackBest Overall | 59 lb | View on Amazon |
| 2 | 2. B2 Fabrication Axle-BackBest Axle-Back | — | View on Amazon |
| 3 | 3. AWE Touring ExhaustBest Black Tips | 83 lb | View on Amazon |
| 4 |  4. aFe Power Ram ExhaustBest Ram Fit | 47 lb | View on Amazon |
| 5 |  5. AWE Charger Exhaust SuiteAWE Charger suite shoppers | — | View on Amazon |
| 6 |  6. SLP Loud Mouth Cat-BackOlder Charger SRT-8 sound setup | 60 lb | View on Amazon |
Detailed Reviews: Best Exhaust For 6 4 Hemi
#1 · Best Overall
1. Borla 140641 Cat-Back
- Weight: 59 lb
Best for: MDS-equipped Challenger cat-back.
Why it ranks #1: Its stated fit covers 2015–2023 Challenger 6.4L SRT 392 and Scat Pack models, with T-304 stainless steel, bolt-on installation and a no-drone guarantee.
Borla specifies this cat-back for 2015–2023 Dodge Challenger SRT 392, 392 Hemi, and Scat Pack 6.4L V8 models with MDS valves, covering both automatic and manual transmissions in rear-wheel-drive form. Its T-304 stainless steel and bolt-on installation give buyers concrete construction and mounting details.
The listed fit covers 6.4L Challenger variants with MDS cylinder-deactivation valves, including AT and MT RWD configurations, so those drivetrain details help define the intended application. Borla’s T-304 stainless-steel construction and all-welded construction identify how the cat-back is made, while bolt-on installation clarifies the stated mounting approach. The manufacturer also lists a No Drone Guarantee. Tips are not included; the product specifies using the factory bezel or valance, a boundary to account for when planning the rear-end finish.
- Fit listed for 2015–2023 6.4L Challenger SRT 392 and Scat Pack applications
- Specifies MDS valves and AT/MT RWD configurations
- T-304 stainless steel with all-welded construction
- Bolt-on installation and a No Drone Guarantee are listed
- Tips are not included; the factory bezel or valance is to be used.
Skip it if you need included tips; AWE Tuning 3020-43082 lists quad black tips with its Challenger Touring Edition exhaust.
This Borla cat-back fits buyers with a listed 2015–2023 6.4L Challenger MDS application who want T-304 stainless construction and bolt-on installation. Account for the stated tip boundary: tips are excluded, and the factory bezel or valance is used.
Full product details
| Brand | Borla |
|---|---|
| Color | black |
| Included Components | Catback |
| Item Weight | 59 pounds |
| Manufacturer | BORLA |
| Part Number | 140641 |
| Manufacturer Warranty Description | Manufacturer warranty |
| Model Number | 140641 |
#2 · Best Axle-Back
2. B2 Fabrication Axle-Back
Best for: Charger and Challenger axle-back.
Why it ranks #2: The listing names 2015–2023 6.4L Challenger and Scat Pack Charger fitment and specifies a cut-and-clamp design with factory-style hangers.
A cut-and-clamp layout with factory-style hangers defines B2 Fabrication’s axle-back system for 2015–2023 6.4L Challenger models and SRT8 or Scat Pack Chargers. It retains factory tips and also supports most aftermarket tips, giving owners a stated installation approach and flexibility around the rear exhaust finish.
The listed applications cover 2015–2023 Dodge Challenger 6.4L models, 6.2L SRT Hellcat Challengers, and SRT8 or Scat Pack Chargers. Its cut-and-clamp design and factory-style hangers describe how the axle-back attaches, while the included pipes, clamps, and instructions give installers specified package contents. Retaining factory tips—or using most aftermarket tips—can preserve an existing finish or accommodate another tip choice. The manufacturer also identifies reduced weight and backpressure as system aims, alongside an aggressive muscle-car tone.
- Listed for 2015–2023 Challenger 6.4L and 6.2L SRT Hellcat models
- Fits listed SRT8 and Scat Pack Charger applications
- Cut-and-clamp design with factory-style hangers
- Retains factory tips and is compatible with most aftermarket tips
- The stated fit covers specified 2015–2023 Charger and Challenger applications only.
Skip it if you need a full cat-back system; Borla 140641 is listed as a Challenger cat-back for specified 6.4L MDS applications.
Choose this B2 Fabrication axle-back if your 2015–2023 Charger or Challenger is among the listed applications and you want to retain factory tips or use most aftermarket tips. Its specified scope is axle-back, not a full cat-back system.
Full product details
| Brand | B2 Fabrication |
|---|---|
| Included Components | Pipes, Clamps and Instructions |
| Manufacturer | B2 Fabrication |
| Part Number | DCLL-03-02 |
| Manufacturer Warranty Description | 1 Year |
| Model Number | DCLL-03-02 |
Listed on Amazon as: 2015-2023 6.2L/6.4L Charger/Challenger Axle Back Exhaust System (Polished)
View on Amazon#3 · Best Black Tips
3. AWE Touring Exhaust
- Weight: 83 lb
Best for: Black-tip Challenger touring setup.
Why it ranks #3: This non-resonated Touring Edition is listed for 2015+ Challenger 6.4L models and comes with quad black tips.
Non-resonated construction paired with quad black tips gives this AWE Touring Edition a clearly specified configuration for 2015-and-newer Dodge Challenger 6.4L and 6.2L models. That combination identifies the exhaust’s resonator approach and visible finish up front, helping shoppers narrow in on a Challenger-specific system with black quad outlets.
The listed 6.4L/6.2L Challenger application makes this a focused choice for owners of those engines, rather than a general-purpose exhaust. Its non-resonated configuration is the defining exhaust setup, while the quad black tips provide a coordinated visible finish. AWE identifies the package as a Touring Edition and lists an 83-pound item weight, useful details when planning handling and installation. Included components are listed as the main component only, so the package description is limited.
- Specified for 2015-and-newer Dodge Challenger 6.4L and 6.2L applications
- Non-resonated Touring Edition configuration
- Quad black exhaust tips
- AWE Tuning system with stated 83-pound item weight
- Included components are listed as the main component only.
Skip it if you need a package listing that specifies included installation hardware; this listing identifies only the main component.
Choose this AWE system if your 2015-or-newer Challenger has a 6.4L or 6.2L engine and you want a non-resonated setup with quad black tips. Its listed application is specific to Challenger models, and the component listing is limited.
Full product details
| Brand | AWE Tuning |
|---|---|
| Color | Quad Black Tips |
| Included Components | Main component only |
| Item Weight | 83 pounds |
| Manufacturer | AWE |
| Part Number | 3020-43082 |
| Manufacturer Warranty Description | Please contact us if you experience any issues within 30 days of receipt. |
| Model Number | 3020-43082 |
Listed on Amazon as: AWE Tuning 2015+ Dodge Challenger 6.4L/6.2L Non-Resonated Touring Edition Exhaust – Quad Black Tips
View on Amazon#4 · Best Ram Fit
4. aFe Power Ram Exhaust
- Weight: 47 lb
Best for: Ram 6.4L bolt-on truck fit.
Why it ranks #4: It is specifically listed for 2019–2021 Ram trucks with the V8 6.4L Hemi and specifies stainless steel and bolt-on installation.
A bolt-on installation type and stainless-steel construction are the clearest specifics in aFe Power’s exhaust listing for 2019–2021 Ram trucks with the V8 6.4L Hemi. Those details help identify the system’s material and installation approach, while the stated truck application narrows the choice to a defined vehicle and engine range.
The listing names Ram Trucks from 2019–2021 with a V8 6.4L Hemi, giving owners a concrete application to compare with their vehicle. Its bolt-on installation type describes the stated mounting approach, while stainless-steel material identifies the exhaust’s construction. The 47-pound item weight is useful to consider when handling the system during installation. Beyond those details, the supplied information does not name included components or describe sound, tips, or additional installation hardware.
- Listed for 2019–2021 Ram trucks with a V8 6.4L Hemi
- Bolt-on installation type
- Stainless-steel material
- 47-pound item weight is specified
- The supplied listing does not identify included components.
Skip it if you need a listing that names pipes, clamps, and instructions; B2 Fabrication DCLL-03-02 specifies those included components.
Consider this aFe Power option if you have a 2019–2021 Ram truck with the V8 6.4L Hemi and want a stainless-steel, bolt-on exhaust. The available listing provides few further component or sound details, so those needs may call for another specified package.
Full product details
| Brand | aFe Power |
|---|---|
| Compatible with Vehicle Type | Truck |
| Installation Type | Bolt-On |
| Item Weight | 47 pounds |
| Manufacturer | Advanced Flow Engineering |
| Part Number | 49-42082-P |
| Material | Stainless Steel |
| Model Number | 49-42082-P |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: Ram Trucks 19-21 V8-6.4L Hemi
View on Amazon#5
5. AWE Charger Exhaust Suite
Best for: AWE Charger suite shoppers.
Why it ranks #5: The title identifies a 2015+ Dodge Charger 6.4L application, but the supplied listing provides no system type, material or installation details.
AWE Tuning identifies this exhaust suite for 2015-and-newer Dodge Charger models with 6.4L or 6.2L supercharged engines. That named vehicle and engine range is the main concrete differentiator in the supplied listing, giving owners of those Chargers a focused starting point when comparing exhaust options.
The title specifies a 15-and-newer Dodge Charger application and names both 6.4L and 6.2L supercharged engines, which helps shoppers assess whether the suite matches their model and engine. AWE Tuning is identified as the brand. The supplied specifications do not describe the suite’s construction, included components, installation method, tip style, or sound configuration, so the title alone offers limited guidance for comparing those practical details or planning installation.
- AWE Tuning brand
- Listed for 2015-and-newer Dodge Charger models
- Names 6.4L engine application
- Also names 6.2L supercharged engine application
- The supplied listing gives no installation method or included-component details.
Skip it if you need stated installation hardware and components; SLP D31004 lists hardware and instructions for 2005–2014 Charger SRT-8 models.
This listing is a starting point for owners of 2015-and-newer Chargers with the named 6.4L or 6.2L supercharged engines who are considering AWE Tuning. The supplied details leave construction, package contents, installation, and sound configuration unspecified.
Full product details
| Brand | AWE Tuning |
|---|
Listed on Amazon as: AWE Exhaust Suite for the 15+ Dodge Charger 6.4 / 6.2 SC
View on Amazon#6
6. SLP Loud Mouth Cat-Back
- Weight: 60 lb
Best for: Older Charger SRT-8 sound setup.
Why it ranks #6: This cat-back includes an X-pipe, mandrel-bent piping and polished stainless resonators and tips, but its title focuses on older Charger SRT-8 fitment.
An included x-pipe, mandrel-bent piping, and Loud Mouth resonators define SLP’s cat-back package for 2005–2014 Dodge Charger SRT-8 models. The system pairs those exhaust components with four-inch tips and installation hardware, giving owners a specified set of parts for a complete cat-back installation workflow.
SLP lists the system for Charger SRT-8 models from 2005 through 2014, making the stated vehicle range central to choosing it. The x-pipe and mandrel-bent piping identify the routing components, while Loud Mouth resonators establish the system’s named configuration. Polished stainless steel resonators and tips provide the stated material and finish details. Hardware and installation instructions are included, which gives an installer supporting items and guidance in the package rather than requiring those details to be inferred.
- Specified for 2005–2014 Dodge Charger SRT-8 models
- Includes an x-pipe and mandrel-bent piping
- Includes Loud Mouth resonators and four-inch tips
- Hardware and installation instructions are listed
- The stated vehicle fit is limited to 2005–2014 Charger SRT-8 models.
Skip it if you own a 2015-or-newer Charger; the B2 Fabrication DCLL-03-02 lists 2015–2023 SRT8 and Scat Pack Chargers.
This SLP cat-back suits an owner of a 2005–2014 Charger SRT-8 seeking the listed Loud Mouth components, polished stainless resonators and tips, and installation hardware. Its stated fit range does not cover later Charger model years.
Full product details
| Brand | SLP |
|---|---|
| Item Weight | 60 pounds |
| Item model number | D31004 |
| Manufacturer | SLP Performance Parts |
| Part Number | D31004 |
| Dimensions | 60 x 16 x 15 inches |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: 2005-2014 Charger SRT-8 Loud Mouth Cat Back Exhaust System with 4" Tips
View on AmazonAvoiding fitment mismatches across Hemi platforms
The main fitment trap is assuming that a 6.4 Hemi exhaust fits every vehicle carrying that engine. These listings split across Challenger, Charger and Ram applications, and their stated coverage differs: the Borla listing specifies 2015–2023 Challenger 6.4L models, the B2 Fabrication listing covers selected 2015–2023 Charger and Challenger models, and the aFe Power listing names 2019–2021 Ram trucks. The SLP listing is centered on older Charger SRT-8 applications, while its additional description also mentions other older SRT-8 vehicles.
Before ordering, match the product against your vehicle’s exact model, year, engine, body style and drivetrain. Do not treat a shared engine displacement as proof of compatibility.
The AWE Charger listing is especially brief, so its title alone is not enough to establish every configuration it supports. Confirm application details with the seller or manufacturer when the supplied listing leaves a question open.
Check tips, valances and exhaust-system boundaries
Tip and system boundaries can affect whether an exhaust works with the parts already on your vehicle. Borla states that its cat-back does not include tips and uses the factory bezel or valance, so buyers seeking replacement tips should not assume they are supplied. By contrast, the AWE Touring listing names quad black tips, and the SLP system lists polished stainless-steel tips among its components.
B2 Fabrication describes an axle-back design that retains factory tips and is also compatible with most aftermarket tips. These are materially different arrangements, not just different sounds.
Also note that a cat-back and an axle-back replace different portions of the exhaust; confirm which section your intended installation requires. Listing details do not establish sound level, emissions compliance, or whether extra parts will be needed for a particular vehicle, so verify those requirements for your setup before purchasing.
How to Choose a 6.4 Hemi Exhaust
Vehicle and year fitment
Start by matching the listing’s stated vehicle and model years to your own, rather than relying on engine size alone. Borla specifies 2015–2023 Challenger SRT 392 and Scat Pack 6.4L V8 fitment; B2 Fabrication lists 2015–2023 6.4L Challenger and Scat Pack Charger applications. The aFe Power listing instead targets 2019–2021 Ram trucks with the V8 6.4L Hemi, while SLP describes older Charger SRT-8 fitment.
Buyers with a Challenger in Borla’s stated range have a clearly described option; Ram owners should focus on the truck-specific listing. If your model or configuration is not explicitly covered, verify compatibility before ordering.
Exhaust section and included tips
Choose the system type and tip arrangement that suit your intended replacement. Borla is a cat-back and explicitly excludes tips, using the factory bezel or valance. SLP is also a cat-back and lists an X-pipe, mandrel-bent piping, resonators, tips, hardware and instructions.
B2 Fabrication is an axle-back that retains factory tips and supports most aftermarket tips. AWE’s Challenger Touring listing specifies quad black tips, but the supplied detail does not spell out every included component.
Buyers replacing a broader exhaust section should compare cat-back choices; those seeking an axle-back and existing-tip reuse should examine B2 Fabrication. Confirm exactly what is included rather than inferring it from the system name.
Construction and installation details
Compare stated materials and installation information when durability and installation approach matter. Borla specifies T-304 stainless steel, welded construction and bolt-on installation; the Ram-specific aFe Power listing also names stainless steel and bolt-on installation. SLP lists polished stainless-steel resonators and tips, along with mandrel-bent piping and installation instructions.
B2 Fabrication describes a cut-and-clamp design with factory-style hangers, a different installation approach from the bolt-on systems. These details favor different buyer situations: a buyer seeking stated bolt-on fitment can start with Borla or aFe for their respective applications, while someone considering an axle-back should account for B2’s cut-and-clamp design.
The listings do not provide comparable material details for every option, so avoid assuming unspecified construction.
Which 6.4 Hemi Exhaust Should You Choose?
For a Challenger 6.4L covered by its stated fitment, choose the Borla 140641 Cat-Back for its T-304 stainless construction, bolt-on installation and no-drone guarantee; remember it does not include tips. If you want an axle-back for a listed 2015–2023 Challenger or Scat Pack Charger, consider the B2 Fabrication Axle-Back, which retains factory tips. For quad black tips on a 2015+ Challenger, the AWE Touring Exhaust is a relevant match.
Ram truck owners should look at the aFe Power Ram Exhaust, listed for 2019–2021 6.4L Hemi trucks. The AWE Charger Exhaust Suite is a possible Charger-specific option, but its details are sparse.
The SLP Loud Mouth Cat-Back suits buyers checking older Charger SRT-8 applications; confirm exact fitment first.
Frequently Asked Questions
Will a cat-back or axle-back exhaust fit my vehicle’s factory exhaust layout?
Fit depends on the exact vehicle and exhaust configuration, not just whether the system is cat-back or axle-back. The listed Borla cat-back is specified for certain 2015–2023 Challenger 6.4L applications, while the B2 axle-back is listed for certain Challenger and Scat Pack Charger applications. Confirm the listing covers your vehicle before ordering.
Do I need to keep or replace my factory exhaust tips and valance?
Check what the selected system includes and what your vehicle requires. The Borla 140641 listing says tips are not included and calls for the factory bezel or valance. The B2 axle-back listing says it retains factory tips.
Other listings name tips in their titles, but confirm included components and valance compatibility for your exact application.
How can I confirm fitment for my exact model, engine, drivetrain, and exhaust configuration?
Match your vehicle’s year, model, engine, drivetrain, and existing exhaust layout against the product’s stated fitment, then verify any listed transmission or equipment restrictions. For example, Borla’s listing specifies Challenger SRT 392 and 392 Hemi/Scat Pack 6.4L V8 models with RWD and MDS valves. Contact the seller if any detail is unclear.
Which listed option is intended for a Ram with a 6.4L Hemi?
The aFe Power listing is titled for 2019–2021 Ram trucks with a V8 6.4L Hemi. That title alone does not confirm fitment for every Ram configuration, so compare your truck’s year, model, drivetrain, and exhaust setup with the full product listing before purchasing.
Does the Borla no-drone guarantee apply to every exhaust in this roundup?
No. The supplied details specify a no-drone guarantee for the Borla 140641 cat-back system only. Do not assume that guarantee applies to the AWE, SLP, aFe Power, or axle-back listings.
Check the individual product information for sound-related claims and confirm that the chosen system fits your vehicle.
Final Words
For a Challenger 6.4L covered by its stated fitment, the Borla 140641 is the strongest overall choice, with T-304 stainless construction, bolt-on installation, and a no-drone guarantee; confirm the factory bezel or valance requirement, since tips are not included. Consider the B2 axle-back for its listed Challenger or Scat Pack Charger applications, and the AWE Touring for quad black tips on a 2015+ Challenger. Ram owners should check the aFe listing, and verify exact fitment before ordering any option.
