The MBRP Armor Lite Universal High-Flow Muffler (GP015) is a performance-oriented exhaust component designed for custom exhaust fabrication, muffler replacement, and vehicles equipped with compatible 4-inch exhaust systems. Featuring durable 16-gauge aluminized steel construction, a high-flow design, and a cylindrical muffler body, the GP015 offers an economical solution for enthusiasts looking to build or modify a performance exhaust system.

Manufactured using MBRP's quality-focused fabrication processes, the GP015 combines practical durability with a design intended to support exhaust flow while providing sound attenuation. Its aluminized steel construction features a protective coating, including the seams, to help resist corrosion under suitable operating conditions.

The muffler features a 4-inch inlet diameter, 4-inch outlet diameter, 6-inch round body diameter, 24-inch body length, and 30-inch overall length. These dimensions make it particularly suitable for custom exhaust systems requiring large-diameter piping and a full-size muffler assembly.

The GP015 is part of MBRP's Armor Lite product family, which emphasizes value-oriented aluminized steel construction. This material offers an affordable alternative to stainless steel exhaust components, making it attractive for budget-conscious performance builds and custom exhaust projects.

One of the primary advantages of the GP015 is its universal design. Rather than being engineered for a specific vehicle, this muffler can be incorporated into properly sized exhaust systems using custom fabrication techniques. Its 4-inch inlet and outlet connections make it particularly relevant to larger-displacement engines, diesel performance applications, and custom high-flow exhaust systems.

The round 6-inch body provides a traditional cylindrical muffler configuration, while the 24-inch body length offers a substantial muffler section for applications where adequate underbody space is available.

Unlike complete cat-back or turbo-back exhaust systems, the GP015 is sold as an individual muffler. It can be used to replace an existing compatible muffler or incorporated into a custom exhaust assembly with the appropriate tubing, connections, hangers, and mounting components.

Whether upgrading a diesel performance truck, fabricating a custom exhaust system, or replacing a damaged high-flow muffler, the MBRP GP015 provides dependable construction, versatile installation possibilities, and the performance-oriented design expected from MBRP exhaust products.

Features

• Universal High-Flow Muffler: Designed for custom exhaust systems and compatible replacement applications.

• Armor Lite Construction: Value-oriented aluminized steel design provides an economical alternative to stainless steel mufflers.

• 16-Gauge Aluminized Steel: Durable steel construction offers strength for demanding exhaust applications.

• Protective Aluminized Coating: Coated construction, including seams, helps resist corrosion under suitable operating conditions.

• 4-Inch Inlet Diameter: Designed for exhaust systems utilizing compatible 4-inch piping.

• 4-Inch Outlet Diameter: Maintains a consistent nominal 4-inch exhaust connection through the muffler assembly.

• 6-Inch Round Body Diameter: Cylindrical muffler design provides a traditional performance exhaust configuration.

• 24-Inch Muffler Body Length: Full-size body offers a substantial muffler section for custom exhaust installations.

• 30-Inch Overall Length: Provides clearly defined dimensions for exhaust fabrication and replacement planning.

• High-Flow Design: Intended for performance exhaust systems where maintaining exhaust flow is an important consideration.

• Performance Exhaust Sound Control: Provides muffling functionality while supporting a performance-oriented exhaust configuration.

• Universal Fitment: Can be incorporated into properly sized exhaust systems across multiple vehicle applications.

• Custom Fabrication Compatibility: Suitable for exhaust projects requiring welded connections and fabricated mounting components.

• Weld-On Installation: Designed for integration into custom exhaust systems using appropriate welding procedures.

• Custom Hanger Placement: Allows installers to fabricate and position exhaust hangers according to the vehicle's requirements.

• Diesel Performance Applications: Particularly suitable for compatible large-diameter diesel exhaust systems.

• Budget-Friendly Performance Upgrade: Provides a cost-conscious solution for replacing or modifying a high-flow exhaust muffler.

• MBRP Manufacturing Quality: Manufactured using MBRP's established exhaust component production processes.

• Sold Individually: Includes one muffler for use in a compatible exhaust system.

Popular Performance Applications

• Diesel Performance Trucks: Suitable for custom 4-inch exhaust systems on compatible diesel-powered pickups.

• Turbocharged Diesel Applications: Provides a high-flow muffler option for properly configured turbo-diesel exhaust systems.

• Custom Truck Exhaust Systems: Ideal for fabricated exhaust assemblies utilizing compatible 4-inch piping.

• Heavy-Duty Pickup Builds: Suitable for modified trucks requiring a universal large-diameter muffler.

• Performance SUV Applications: Can be incorporated into custom exhaust systems where the dimensions and available clearance permit.

• Custom Turbocharged Gasoline Builds: Suitable for specially fabricated 4-inch exhaust systems when the muffler's dimensions and design meet the application's requirements.

• K-Series Turbocharged Applications: May be incorporated into custom K20 or K24 exhaust builds utilizing 4-inch piping, provided adequate clearance and fabrication provisions exist.

• High-Horsepower Honda and Acura Projects: A possible option for specialized large-diameter custom exhaust systems rather than typical factory exhaust replacements.

• Custom Cat-Back Exhaust Fabrication: Provides a muffler component for custom-built exhaust assemblies.

• Custom Turbo-Back Exhaust Systems: Suitable for compatible applications requiring a universal 4-inch high-flow muffler.

• Exhaust Muffler Replacement: Can replace an existing muffler when dimensions, connection sizes, mounting requirements, and system design are compatible.

• Street and Performance Builds: Offers a universal muffler solution for vehicles requiring custom exhaust fabrication.

Important: These are potential custom fabrication applications, not confirmed direct-fit vehicle applications. The GP015 is not a vehicle-specific bolt-on muffler.

Additional Information

• Manufacturer: MBRP
• Part Number: GP015
• Product Type: Universal High-Flow Exhaust Muffler
• Product Family: Armor Lite
• Material: 16-Gauge Aluminized Steel
• Finish: Aluminized Steel
• Muffler Body Shape: Round / Cylindrical
• Inlet Diameter: 4 Inches
• Outlet Diameter: 4 Inches
• Body Diameter: 6 Inches
• Body Length: 24 Inches
• Overall Length: 30 Inches
• Installation Type: Weld-In / Custom Fabrication
• Vehicle Fitment: Universal, Based on Exhaust System Dimensions
• Quantity: Sold Individually
• UPC: 882963103901
• Manufacturer Warranty: Not Specified on MBRP's GP015 Product Listing

Fitment Information:

The MBRP GP015 is a universal exhaust muffler rather than a direct-fit replacement for any specific vehicle.

Proper compatibility depends on the existing exhaust system's dimensions, configuration, available space, and installation requirements.

Before ordering, verify the following:

• Inlet Diameter: 4 inches

• Outlet Diameter: 4 inches

• Muffler Body Diameter: 6 inches

• Muffler Body Length: 24 inches

• Overall Length: 30 inches

• Exhaust Pipe Compatibility: Requires appropriately sized 4-inch exhaust connections.

• Available Installation Space: Verify sufficient underbody clearance for the 6-inch-diameter body and 30-inch overall length.

• Mounting Requirements: Custom exhaust hangers or mounting modifications may be required.

• Connection Method: Welding or other properly engineered fabrication methods may be necessary.

• Exhaust System Layout: Confirm that the muffler can be positioned without interfering with suspension, drivetrain, fuel system, or body components.

Material Information:

The GP015 features aluminized steel construction, providing an economical alternative to stainless steel exhaust components.

Aluminized steel is generally well suited to vehicles operating in relatively dry environments. Frequent exposure to road salt, moisture, and harsh winter conditions can accelerate corrosion, particularly where the coating has been damaged or modified during fabrication.

For vehicles regularly exposed to severe winter conditions or road salt, stainless steel exhaust components may provide improved long-term corrosion resistance.

Sound and Performance Information:

The GP015 is designed as a high-flow muffler for compatible performance exhaust systems.

Actual exhaust sound depends on engine displacement, turbocharger configuration, exhaust pipe diameter, catalytic converters, resonators, and the overall exhaust system layout.

The muffler may alter exhaust volume and tone compared with the component it replaces, but specific sound levels, horsepower gains, and torque improvements are not guaranteed.

Important Installation Information:

This muffler is not a complete exhaust system and is not intended as a direct bolt-on replacement without verifying the existing exhaust configuration.

Professional exhaust fabrication is recommended.

Common Reasons for Replacement

• Damaged Exhaust Muffler: Replaces a muffler with physical damage, broken welds, or deteriorated construction.

• Corroded Exhaust Components: Provides a replacement option for an existing rusted or damaged muffler.

• Custom Exhaust Fabrication: Offers a high-flow muffler component for building a custom 4-inch exhaust system.

• Performance Exhaust Upgrades: Supports custom exhaust configurations where a high-flow muffler is desired.

• Diesel Exhaust Modifications: Provides a replacement or fabrication component for compatible diesel performance exhaust systems.

• Exhaust System Reconfiguration: Allows builders to modify muffler placement or incorporate a different muffler design.

• Budget-Conscious Exhaust Builds: Offers an economical aluminized steel alternative to more expensive stainless steel mufflers.

• Worn Internal Muffler Components: Can replace an existing muffler that has developed excessive noise or internal deterioration.

• Custom Turbocharged Applications: Suitable for specially fabricated large-diameter turbocharged exhaust systems.

• Exhaust Sound Modification: Allows enthusiasts to change muffler characteristics as part of a properly engineered exhaust system.

• Restoration of Exhaust System Integrity: Replaces damaged exhaust components that may contribute to leaks or unwanted noise.

Installation Notes

1. Verify Exhaust Pipe Diameter: Confirm that the exhaust system utilizes compatible 4-inch piping.

2. Measure Available Installation Space: Ensure sufficient room for the 6-inch-diameter muffler body and 30-inch overall length.

3. Confirm Exhaust System Configuration: Verify that the existing exhaust layout can accommodate the muffler.

4. Allow the Exhaust to Cool: Make sure all exhaust components have cooled completely before beginning installation.

5. Safely Support the Vehicle: Use an appropriate vehicle lift or properly rated jack stands.

6. Inspect the Existing Exhaust: Check the exhaust piping, hangers, welds, and surrounding components for damage or corrosion.

7. Identify the Installation Location: Determine the proper muffler position while maintaining sufficient ground and underbody clearance.

8. Measure Existing Exhaust Sections: Confirm the required pipe lengths and connection locations before making any cuts.

9. Remove the Existing Muffler: Cut or disconnect the original muffler as necessary for the application.

10. Prepare the Exhaust Connections: Clean and properly prepare the pipe ends for the selected installation method.

11. Test-Fit the MBRP GP015: Position the muffler within the exhaust system to verify alignment and available clearance.

12. Confirm Muffler Orientation: Ensure the inlet and outlet are positioned appropriately for the intended exhaust routing.

13. Verify Surrounding Component Clearance: Maintain adequate distance from fuel lines, brake lines, suspension components, wiring, and heat-sensitive materials.

14. Fabricate Required Connections: Install properly sized exhaust tubing or adapters if necessary.

15. Prepare Exhaust Hangers: Fabricate or position hangers to support the muffler without placing excessive stress on the exhaust piping.

16. Secure the Muffler: Weld the muffler connections using appropriate exhaust fabrication techniques and material-compatible procedures.

17. Inspect Weld Quality: Check all welded connections for proper penetration, structural integrity, and sealing.

18. Verify Exhaust Alignment: Confirm that the exhaust system is properly positioned and does not contact surrounding components.

19. Check for Exhaust Leaks: Start the engine and inspect the installation for leaks using appropriate safety precautions.

20. Inspect for Vibration or Contact: Verify that the muffler and exhaust piping do not contact the chassis or suspension during normal operation.

21. Reinspect After Initial Operation: Check the exhaust system after several heating and cooling cycles to ensure that all connections and hangers remain secure.

Important: Welding and custom fabrication may be required for installation. Improper exhaust mounting or inadequate clearance can result in excessive vibration, exhaust leaks, or damage to nearby vehicle components.

Professional installation by a qualified exhaust fabrication shop is recommended.

What's Included

• (1) MBRP Armor Lite Universal High-Flow Muffler (GP015)

• 4-Inch Inlet / 4-Inch Outlet Muffler Assembly

• 6-Inch Round Aluminized Steel Muffler Body

Note: Exhaust tubing, clamps, hangers, exhaust tips, catalytic converters, and custom fabrication components are not specified as included. Additional components may be required depending on the installation.

Upgrade your custom exhaust system with the MBRP Armor Lite Universal 4-Inch High-Flow Muffler (GP015) for durable aluminized steel construction, performance-oriented exhaust flow, and versatile fabrication possibilities.

Featuring a 4-inch inlet, 4-inch outlet, 6-inch round body diameter, 24-inch body length, and 30-inch overall length, this universal muffler provides an economical solution for compatible diesel performance applications, custom exhaust systems, and specialized high-flow exhaust builds.

Whether replacing a damaged muffler, building a custom turbocharged exhaust system, or upgrading a performance truck, the MBRP GP015 delivers the construction quality and flexibility needed to complete your exhaust project.