Choose From a Comprehensive Range of Mufflers

We Offer a 1-Year Warranty on Our Workmanship

Muffler Services

High-Quality Muffler Services

From stock mufflers to performance mufflers, Monster Muffler can handle all your muffler and exhaust system related problems. We work on both domestic and imported vehicles.
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Catalytic Converters

Long-Lasting Catalytic Converters

Get the accurate mixture of fuel and air for your car's engine. Call us at 303-682-0056 to get your old or failing catalytic converter replaced with a long-lasting one at a fair price.
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Contact Us for an Efficient Exhaust

Visit us when you need high-quality exhaust and muffler services. We're located at 125 Bunyan Ave., Berthoud, 80513 and serving Northern Colorado. We offer FREE estimates!
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Get a 10% senior citizen and military discounts on our services - Monster Muffler.
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