Best Exhaust For Infiniti Q50: Axle-Back and Cat-Back Options

#1 · Best Overall

1. Extreme Online Store EXT-MD003

• Material Type: Stainless Steel
• Weight: 12 lb
• Compatible with Vehicle Type: Fits ALL 2014-2024 Infiniti Q50 Models

Best for: Polished silver axle-back upgrade.

Why it ranks #1: The listing covers all 2014–2024 Q50 models and includes paired axle-back sections, gaskets, and nuts and bolts for the stated installation.

A stainless-steel axle-back with 4.5-inch double-wall dual tips gives Q50 owners a prominent polished-silver rear finish while replacing the muffler section. The package includes left and right exhaust pieces, gaskets, and nuts and bolts, so the key listed installation hardware arrives together.

Its stated fitment covers all 2014–2024 Infiniti Q50 models, making the listed year range broad for owners choosing an axle-back replacement. Stainless-steel construction provides the specified material, while the 4.5-inch double-wall dual tips emphasize the visible rear outlet. The included left and right gaskets and nuts and bolts mean buyers receive those listed connection items with the exhaust. The seller says units are test-fitted before shipment, a fitment-oriented check rather than a substitute for installation guidance.

Skip it if you want a complete cat-back replacement; this listing supplies an axle-back assembly rather than a full exhaust system.

Choose this for a Q50 owner seeking a polished-silver axle-back with large double-wall outlets and included connection hardware. Its stated coverage is 2014–2024; buyers seeking a complete cat-back should look elsewhere.

Listed on Amazon as: Replacement For 2014-2024 Infiniti Q50 STAINLESS STEEL POLISHED SILVER Muffler Axle Back 4.5" Double Wall Dual Tips Exhaust EXT-MD003

#2 · Best Engine Coverage

2. BENSON TUNING Axle-Back

• Material Type: Stainless Steel
• Compatible with Vehicle Type: Car

Best for: Four-inch polished axle-back tips.

Why it ranks #2: It lists Q50 fitment from 2014–2024 across 2.0L, 3.0L, 3.5L, and 3.7L engines, with 2.25-inch piping and 4-inch tips.

Four-inch double-walled polished tips give this stainless-steel axle-back a larger stated outlet than many compact exhaust tips, making rear-end appearance its clearest distinction. The listing names Infiniti Q50 2.0, 3.0, 3.5, and 3.7-liter engines from 2014 through 2024, offering broad stated engine coverage.

The 2.25-inch piping inlet and 4-inch outlet dimensions identify the connection and tip sizes, helping buyers understand the exhaust’s specified layout. Stainless-steel construction with a polished finish supplies the listed material and appearance, while double-walled tips add a layered outlet profile. Included bolts, gaskets, and mufflers put those listed components in the package. Its axle-back format focuses the replacement at the rear section rather than replacing the entire exhaust path.

Skip it if you need a full-system replacement; this is an axle-back muffler assembly, not a listed complete cat-back system.

Consider it for a Q50 owner prioritizing polished four-inch double-wall outlets and broad listed engine-year coverage. Its axle-back scope and 2.25-inch inlet are important boundaries when planning the rest of the exhaust setup.

Listed on Amazon as: Dual Walled 4" Tips Polished Stainless Axle Back Muffler Exhaust for Infiniti Q50 2014-2024

#3

3. Extreme Online Store 4-Inch Axle-Back

• Material Type: Stainless Steel
• Weight: 8 lb
• Compatible with Vehicle Type: Fits ALL 2014-Present Infiniti Q50 Models

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Best for: Four-inch dual-tip silver axle-back.

Why it ranks #3: This polished stainless axle-back lists fitment for all 2014–present Q50 models and 4-inch double-wall dual tips, though its coverage wording is less specific.

Four-inch double-wall dual tips give this polished-silver stainless axle-back its clearest visual distinction for Infiniti Q50 owners. The listing states coverage for all 2014–present Q50 models and describes a left-and-right muffler axle-back replacement, keeping the product’s scope focused on the rear exhaust section.

The 4-inch double-wall tips specify the outlet style, while stainless steel and a polished-silver finish describe the material and appearance. Its stated 2014–present Q50 coverage gives buyers a broad model-year range as presented in the listing. Because this is an axle-back muffler replacement, it targets the rear exhaust rather than a complete cat-back system. The listing gives no detailed installation method, so buyers should not assume additional installation hardware or instructions beyond what is supplied.

Skip it if you want a complete cat-back exhaust; this product is listed as a muffler axle-back replacement.

A fit for Q50 owners seeking polished-silver four-inch double-wall dual tips and the listed 2014–present application. Its axle-back scope is the important boundary; choose a complete-system listing if replacing more than the rear section.

Listed on Amazon as: Replacement For 2014-Present Infiniti Q50 STAINLESS STEEL POLISHED SILVER Muffler Axle Back 4" Double Wall Dual Tips Exhaust

#4 · Burnt-Tip Option

4. Extreme Online Store Burnt-Tip Axle-Back

• Material Type: Stainless Steel
• Weight: 25 lb
• Compatible with Vehicle Type: Fits ALL 2014-2024 Infiniti Q50 Models

Best for: Burnt-tip Q50 axle-back appearance.

Why it ranks #4: It states fitment for all 2014–2024 Q50 models and pairs a stainless axle-back with 4-inch double-wall dual burnt tips.

Four-inch double-wall burnt tips distinguish this stainless-steel axle-back from the polished-tip version, giving Q50 owners a specific outlet appearance choice. The listing states fitment for all 2014–2024 Infiniti Q50 models and packages the assembly as a left-and-right muffler axle-back replacement.

Its stated Q50 coverage spans 2014–2024, while the 4-inch outlet size and double-wall construction define the visible tip setup. Stainless steel is the listed material, and the burnt finish differentiates the outlets’ appearance. The product is an axle-back muffler replacement, so its scope is the rear section rather than a full cat-back. The supplied package details identify a left and right pair; buyers seeking another exhaust section should account for that limited scope.

Skip it if you need a complete exhaust-system replacement; this listing covers the axle-back muffler section only.

Choose this for a Q50 owner seeking a burnt-tip appearance and a stated 2014–2024 axle-back application. Its four-inch double-wall outlets are the visual focus, while the rear-section scope rules it out as a full-system replacement.

Listed on Amazon as: Replacement For 2014-2024 Infiniti Q50 STAINLESS STEEL POLISHED SILVER Muffler Axle Back 4" Double Wall Dual Burnt Tips Exhaust

#5 · Muffler-Delete Option

5. Truck Exhaust Kits Muffler Delete

• Weight: 15 lb

Best for: Muffler-delete sound-focused axle-back.

Why it ranks #5: Its direct-fit listing covers 2014–2024 Q50 models and specifies a 2.5-inch mandrel-bent axle-back muffler-delete design.

A 2.5-inch direct-fit muffler-delete axle-back is the defining setup here, with the listing aimed at Q50 owners seeking to hear more of the car’s exhaust sound. It covers 2014–2024 Q50 models and specifies mandrel-bent pipes, giving the replacement a stated pipe-forming method.

The 2.5-inch pipe diameter and axle-back muffler-delete format identify the product’s configuration, while the direct-fit and bolt-on descriptions point to a replacement workflow rather than custom cutting. Mandrel-bent pipes are the specified construction feature, and the listing says it is made in the USA. Because this removes the muffler section, the product is best matched to buyers actively seeking that sound-oriented change, not those wanting a retained muffler arrangement.

Skip it if you want an axle-back that retains mufflers; this kit is specifically described as a muffler delete.

This suits Q50 owners seeking a direct-fit, 2.5-inch muffler-delete axle-back and its sound-focused approach. The key boundary is the deleted muffler section, so it is not the choice for buyers wanting a muffler-equipped replacement.

Listed on Amazon as: Truck Exhuast Kits – Direct Fit Infiniti Q50 14-24 2.5" High Flow Axle Back

#6

6. TUNERBITS Axle-Back

• Material Type: Stainless Steel
• Compatible with Vehicle Type: Car

Best for: Direct-bolt axle-back for earlier Q50s.

Why it ranks #6: The polished stainless axle-back lists Q50 fitment for 2014–2018 and describes direct bolt-on installation with mandrel-bent piping.

Direct bolt-on installation is the defining convenience of this polished-stainless axle-back, which is listed for 2014–2018 Infiniti Q50 models. CNC-machined flanges and TIG- and MIG-welded construction support its specified assembly approach, while mandrel-bent piping provides a shaped replacement path for the rear exhaust section.

The stated 2014–2018 fitment gives earlier Q50 owners a clear application window, rather than claiming coverage for later model years. Polished stainless steel supplies the listed material and finish; mandrel-bent piping describes the pipe construction. CNC-machined flanges and a direct-bolt-on installation are relevant to the replacement workflow, with TIG and MIG welds specified in the construction. The product information says installation instructions are not included and directs installers to a shop or factory manual.

Skip it if you own a Q50 outside 2014–2018; this listing states fitment only for those model years.

A candidate for earlier Q50 owners wanting a polished axle-back with direct bolt-on installation and specified welded construction. It is limited to 2014–2018, and installation requires consulting a shop or factory manual because instructions are not supplied.

Listed on Amazon as: Polished Stainless Steel Axle Back Muffler Exhaust for Infiniti Q50 2014-2018

#7 · Turbo Y-Pipe

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7. Bull Boost Y-Pipe Kit

• Material Type: Stainless Steel

Best for: Twin-turbo bolt-on Y-pipe replacement.

Why it ranks #7: This SS304 bolt-on kit targets 2016–2023 Q50 twin-turbo models, including Sport and Red Sport 400, but serves a narrower exhaust section.

SS304 stainless-steel piping and CNC-machined flanges define this Y-pipe kit, which is listed for 2016–2023 Q50 and Q60 twin-turbo models. Its bolt-on, no-cutting installation enables a direct-replacement approach for owners seeking an exhaust-flow-focused piping change without cutting the existing system.

The application listing specifically includes V37/CV37 twin-turbo cars, including Sport and Red Sport 400 models, giving those owners a defined compatibility target. SS304 pipe material is identified for durability, while CNC-machined flanges are specified for a precise fit. Bolt-on installation with no cutting can simplify the replacement workflow compared with a modification requiring pipe cuts. The listing describes enhanced exhaust airflow, but does not provide a quantified performance gain or sound measurement.

Skip it if you have a Q50 outside the listed 2016–2023 twin-turbo application; the listing does not cover every Q50 configuration.

A fitting option for owners of listed 2016–2023 Q50 twin-turbo models who want a no-cut Y-pipe replacement. Check that the vehicle falls within the stated application, especially if it is not a Sport or Red Sport 400.

Listed on Amazon as: BULL BOOST 2.5" – 3" Y-PIPE KIT STAINLESS STEEL FOR 16-23 INFINITI Q50 Q60 CV37 V6 3.0L TT

#8

8. Generic Q50 VR30 Header

• Material Type: Stainless Steel

Best for: T304 twin-turbo exhaust piping.

Why it ranks #8: The listing specifies 2016–2024 Q50 VR30 twin-turbo fitment and T304 stainless construction, but identifies a manifold header rather than an axle-back.

Mandrel-formed T304 stainless steel and TIG-welded CNC machine flanges are the central features of this exhaust-pipe listing for VR30 twin-turbo Q50s. Its stated Q50 application spans 2016–2024, and the description connects smooth-radius bends with reduced turbulence and enhanced exhaust flow.

For the listed 2016–2024 Q50 VR30 twin-turbo application, the product is presented as exhaust manifold/header piping rather than an axle-back muffler. T304 stainless steel, a polished surface, and TIG-welded CNC flanges describe the construction buyers are selecting. Smooth-radius bends are stated to reduce turbulence, linking the pipe shape to the advertised flow goal. The listing gives no installation method or detailed included-component inventory beyond components shown in its first figure, so planning may require further product information.

Skip it if you need a clearly documented bolt-on axle-back kit; this listing is for exhaust manifold/header piping and gives no installation method.

Consider this piping for a listed 2016–2024 Q50 VR30 twin-turbo owner focused on T304 construction and the stated smooth-bend flow approach. Its header-pipe scope and unspecified installation method merit attention before planning a replacement.

Listed on Amazon as: Exhaust Pipes For Infiniti 2017-2022 INFINITI Q60 VR30 Twin Turbo & 2016-2024 INFINITI Q50 VR30 Twin Turbo,Q60 Q50 Exhaust Manifold Header

#9

9. HKS Hybrid Cat-Back

• Material Type: Stainless Steel
• Weight: 72.5 lb
• Compatible with Vehicle Type: Car

Best for: Hybrid Q50 switchable-valve system.

Why it ranks #9: This is the only listed cat-back explicitly described for the Q50 Hybrid VQ37, making its stated application narrower than the broad-fit axle-backs.

A switchable valve that can implement a silence mode is the most distinctive stated feature of this HKS cat-back for the Infiniti Q50 Hybrid VQ37. It pairs that operating choice with titanium-tip wording in the product title, targeting hybrid owners who want selectable exhaust behavior.

The title identifies this as a cat-back for the Q50 Hybrid VQ37, making that specific configuration the relevant fitment target rather than the broader Q50 range. The switchable valve’s stated silence function gives the owner an operating choice within the exhaust system. HKS describes its background in exhaust technology, but the supplied information does not detail installation steps, pipe diameter, or the valve’s control method. The listed item weight is 72.5 pounds, a practical handling consideration during planning.

Skip it if you have a non-hybrid Q50; this title specifies the Q50 Hybrid VQ37 application.

Best matched to a Q50 Hybrid VQ37 owner who values a cat-back with a stated silence mode and titanium-tip designation. Confirm the exact hybrid application and account for the listed 72.5-pound item weight during handling.

Listed on Amazon as: HKS 32009-KN001 Cat back Exhaust (Infiniti Q50 Hybrid Vq37 Dual Hi-Power Titanium Tip), 1 Pack

#10

10. aFe Power Takeda Cat-Back

• Material Type: Stainless Steel
• Weight: 30 lb
• Compatible with Vehicle Type: Car

Best for: Honda Accord Takeda cat-back system.

Why it ranks #10: The product description identifies a cat-back for a Honda Accord, not an Infiniti Q50, so its listed application does not serve this search.

Dual 4.75-inch oval, double-wall polished stainless-steel tips define this Takeda cat-back’s visible hardware, alongside 2.5-inch 304 stainless tubing. However, the supplied description identifies the system for a 2013–2014 Honda Accord, not an Infiniti Q50, so Q50 fitment is not established.

The 2.5-inch inlet and 304 stainless-steel construction specify the system’s connection size and material, while hand TIG-welded assembly describes its joining method. The listing also states that no modification is necessary, which pertains to its advertised vehicle application. That application is a 2013–2014 Honda Accord sedan with a 2.4-liter engine, according to the supplied description. Despite the roundup topic, these details do not support presenting it as a Q50-compatible exhaust; buyers should treat the application mismatch as decisive.

Skip it if you need an exhaust for an Infiniti Q50; the supplied application identifies a 2013–2014 Honda Accord instead.

This system’s listed features may interest an Accord owner seeking a stainless cat-back, but it is not supported here as a Q50 fit. Q50 shoppers should choose a product with an explicit Q50 application instead.

Listed on Amazon as: aFe Power #49-36605 Takeda Cat-Back Exhaust System