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Our Expertise and Offerings

At United Muffler, we specialize in manufacturing top-quality, heavy-duty mufflers and truck exhaust systems, along with a comprehensive range of exhaust accessories. Our products cater to a variety of needs, ensuring durability and reliability for different types of vehicles.

Our round truck mufflers come in a wide range of diameters, from 3″ to 16″, while our oval mufflers are available in four distinct sizes. We manufacture both gas and diesel mufflers, designed specifically for school buses, construction equipment, industrial machinery, and custom vehicles that require heavy-duty performance. Whether you need a single muffler or large pallet quantities, we have the perfect solution to meet your needs.

In addition to mufflers, we offer an extensive selection of exhaust accessories.

This includes flexible tubing, Torca seal clamps, band clamps, rain caps, and mandrel-bent elbows ranging from 2″ to 6″, available in both aluminized and 304 stainless steel. Our range of installation accessories ensures that you have everything you need for a complete exhaust system setup.

We take pride in the expertise of our team, which includes Ross Shuttleworth, “The Guru” of welded steel truck mufflers, and Tony DaCosta, part owner. Their dedication and months of hard work have helped us establish a state-of-the-art manufacturing facility. This enables us to produce high-quality mufflers that you can confidently present to your customers.

Explore our online catalog by selecting a category from the top menu. For any inquiries or assistance, please contact us at or give us a call. We appreciate your business and look forward to serving you with the best in heavy-duty muffler solutions.

Our Capabilities


OFF Road and ON Road

Mandrel Bending

Mufflers for OFF Road and ON Road

At United Muffler Corporation, we specialize in providing high-performance mufflers for both off-road and on-road vehicles. Our off-road mufflers are engineered to endure the toughest terrains, delivering exceptional durability and power. Designed to handle extreme conditions, they ensure your vehicle performs optimally no matter the challenge. For on-road vehicles, our mufflers enhance exhaust flow, reduce noise, and improve fuel efficiency, resulting in a smoother and more efficient driving experience.

We combine innovative technology with superior craftsmanship to create mufflers that offer unmatched reliability and performance. Whether you’re navigating rugged trails or city streets, trust United Muffler to keep your vehicle running at its best. Explore our wide range of mufflers tailored to meet the unique demands of different driving environments and experience the difference in quality and performance. Choose United Muffler Corporation for all your muffler needs and ensure your vehicle is equipped with the best in the industry. Contact us today to learn more about our products and find the perfect fit for your vehicle.

Mufflers Capabilities

United Muffler Corporation excels in producing heavy-duty mufflers designed for both off-road and on-road vehicles. Our product range is vast and customizable, ensuring durability and high performance for various applications. Here’s a list of our key capabilities:

  • Round diameters from 4″ to 20″
  • Ovals up to 12″ x 24″
  • Case lengths ranging from 6″ to 60″
  • Inlets and outlets in various configurations
  • Material options: aluminized and stainless steel
  • Custom mufflers tailored to specific requirements

Round Diameters from 4″ to 20″

United Muffler Corporation provides a comprehensive range of mufflers with round diameters varying from 4 inches to 20 inches. This variety ensures that we can cater to a wide range of vehicles and applications, from small off-road vehicles to large commercial trucks. Our ability to customize sizes guarantees a perfect fit and optimal performance for your specific vehicle needs.

Ovals up to 12″ x 24″

Our mufflers are also available in oval shapes, with dimensions reaching up to 12 inches by 24 inches. This flexibility allows us to provide solutions for vehicles with unique space constraints or specific aerodynamic requirements. Oval mufflers often enhance exhaust flow and fit better in certain vehicle designs, offering both performance and aesthetic advantages.

Case Lengths Ranging from 6″ to 60″

We offer muffler case lengths from 6 inches to 60 inches, accommodating various exhaust system designs and vehicle configurations. This range ensures that whether you need a compact solution for a smaller vehicle or a longer, more robust option for heavy-duty applications, United Muffler Corporation can meet your requirements.

Inlets and Outlets in Various Configurations

Our mufflers come with inlets and outlets in multiple configurations to match different exhaust system layouts. This adaptability ensures seamless integration with your vehicle’s existing exhaust setup, enhancing performance and ease of installation. We can customize the positioning and size of inlets and outlets to suit specific needs.

Material Options: Aluminized and Stainless Steel

We utilize high-quality materials like aluminized and stainless steel to manufacture our mufflers. Aluminized steel offers excellent corrosion resistance and cost-effectiveness, while stainless steel provides superior durability and longevity. These material options ensure that our mufflers can withstand harsh conditions and deliver long-lasting performance.

Custom Mufflers Tailored to Specific Requirements

At United Muffler Corporation, we pride ourselves on our ability to create custom mufflers tailored to the specific needs of our clients. Whether it’s a unique vehicle setup or a specialized performance requirement, our team works closely with customers to design and manufacture mufflers that perfectly meet their specifications.

Mandrel Bending

Mandrel bending is a highly precise and versatile technique used to bend pipes and tubes without causing them to collapse or deform. This process involves inserting a mandrel, a solid piece of metal, into the tube during bending. The mandrel supports the tube’s interior, ensuring a smooth, uniform bend with minimal distortion. This technique is crucial for applications requiring high performance and aesthetic quality, such as automotive exhaust systems, structural components, and industrial piping.

Mandrel bending allows for the creation of complex shapes and designs, including tight radii and intricate curves, while maintaining the integrity of the material. At United Muffler Corporation, we utilize advanced mandrel bending equipment and technology to produce high-quality, custom bends in both aluminized and stainless steel tubing. Our expertise ensures that each bend meets exact specifications, providing reliable and efficient solutions for various industries. By leveraging mandrel bending, we deliver products that enhance performance, durability, and visual appeal, meeting the diverse needs of our clients.

Mandrel Bending Capabilities

Our mandrel bending capabilities are at the forefront of the industry, providing precision and customization to meet diverse needs. Key features include:

  • All mandrel bends
  • Aluminized or stainless steel tubing
  • Round tubing from 1″ through 6″
  • Custom shapes and designs: headers, flares, bungs
  • Advanced equipment like Faro Arm inspections with 1/1000th inch accuracy
  • State-of-the-art welding: orbital, robotic TIG, MIG

All Mandrel Bends

Our mandrel bending capabilities include all types of mandrel bends, ensuring precise and consistent results. Mandrel bending involves inserting a mandrel into the tube during the bending process, preventing it from collapsing and maintaining a smooth interior finish. This technique is essential for creating complex exhaust systems with high performance.

Aluminized or Stainless Steel Tubing

We offer mandrel bending services using both aluminized and stainless steel tubing. Aluminized steel provides excellent protection against corrosion, while stainless steel offers superior strength and longevity. These material options ensure that our bent tubes are not only durable but also suited for various environmental conditions.

Round Tubing from 1″ through 6″

Our capabilities cover round tubing with diameters ranging from 1 inch to 6 inches. This range allows us to cater to different exhaust system requirements, from smaller, high-performance applications to larger, heavy-duty systems. We ensure that each bend is precise, maintaining the integrity and performance of the tubing.

Custom Shapes and Designs: Headers, Flares, Bungs

In addition to standard bends, we can create custom shapes and designs, including headers, flares, and bungs. These custom components are essential for specialized exhaust systems, ensuring optimal flow and performance. Our expertise in custom designs allows us to meet the unique needs of our clients, providing tailored solutions that enhance vehicle performance.

Advanced Equipment: Faro Arm Inspections with 1/1000th Inch Accuracy

We utilize advanced equipment, such as Faro Arm inspections, to ensure the highest level of precision in our mandrel bending processes. With an accuracy of 1/1000th of an inch, we can guarantee that each bend meets the exact specifications required. This precision is crucial for maintaining the performance and reliability of the exhaust systems we produce.

State-of-the-Art Welding: Orbital, Robotic TIG, MIG

Our welding capabilities include state-of-the-art techniques such as orbital, robotic TIG, and MIG welding. These advanced welding methods ensure strong, consistent welds that enhance the durability and performance of our bent tubes. By employing the latest technology, we can produce high-quality exhaust components that meet rigorous standards.

Mandrel Bending Material Options

Tube Diameter
(in & mm)
For Multi-Bend Parts Minimum Straight (in) Required w/o WeldsCenter Line Radius
(in & mm)
Tube Diameter
(in & mm)
For Multi-Bend Parts Minimum Straight (in) Required w/o WeldsCenter Line Radius
(in & mm)
1.00 (25.40)4.001.00 (25.40)3.00 (76.20)3.00 – 4.004.00 (101.60)
1.25 (31.75)4.002.00 (50.80)3.50 (88.90)3.00 – 6.004.00 (101.60)
1.50 (38.10)4.002.00 (50.80)3.50 (88.90)3.00 – 6.006.00 (154.40)
1.75 (44.45)4.002.00 (50.80)4.00 (101.60)3.00 – 4.504.50 (114.30)
2.00 (50.80)3.00 – 4.002.00 (50.80)4.00 (101.50)3.00 – 4.506.00 (154.40)
2.25 (57.15)3.00 – 4.002.25 (57.15)4.00 (101.60)3.00 – 4.508.00 (203.20)
2.50 (63.50)3.00 – 4.003.00 (76.20)5.00 (127.00)8.00 – 12.005.00 (127.00)
2.75 (69.85)3.00 – 4.003.00 (76.20)5.00 (127.00)8.00 – 12.006.00 (154.40)
2.75 (69.85)3.00 – 4.004.00 (101.60)6.00 (154.40)9.00 – 12.006.00 (154.40)
3.00 (76.20)3.00 – 4.003.00 (76.20)6.00 (154.40)9.00 – 12.009.00 (228.60)
3.00 (76.20)3.00 – 4.003.50 (88.00)

Frequently Asked Questions

Below are a list of questions most frequently encountered by our team. Please feel free to look here first.