Custom Exhaust

Home / Custom Muffler

Classic Car Exhaust Special – Built Just for Your Ride

Your car deserves more than a cookie-cutter muffler. At Denny’s Automotive & Muffler Center, we’ve been shaping sound and performance for Cedar Rapids drivers since 1974.

Muffler installs starting at $349
Custom cat-back systems starting at $899
All work performed in-house — no outsourcing
2-year workmanship warranty on every install

Ready to Get Back on the Road? Contact us today about your custom exhaust systems options.

Tired of the cookie-cutter muffler sound?

Your car deserves more than a generic fit. At Denny’s CR Muffler, we’ve been building custom exhaust systems for Cedar Rapids drivers since 1974.

From muffler installs starting at $349 to full custom cat-back systems from $899, everything is built in-house and backed by a 2-year workmanship warranty. Whether you want a subtle upgrade, more performance, or that classic roar restored, we’ll craft the perfect system for your ride.

Custom Sound & Style

Choose the tone you want — from quiet comfort to head-turning roar.

In-House Fabrication

All bending, welding, and fitting done on-site by our expert techs.

2-Year Warranty

Every custom exhaust comes backed by our 2-year workmanship guarantee.

Performance Options

Upgrade airflow and horsepower with custom cat-back or performance systems.

Classic & Modern Vehicles

From daily drivers to restored classics, we handle all makes and models.

Trusted Since 1974

Generations of Cedar Rapids drivers have trusted us to get it right.

Our Commitment to Craftsmanship

At Denny’s CR Muffler, we don’t do cookie-cutter installs. Every pipe is measured, bent, and welded for a perfect fit and a sound that matches your personality. Backed by a 2-year workmanship warranty, you can trust our ASE-certified techs to build exhaust systems that last — and perform.

Custom Exhaust FAQs

Can I choose how loud my exhaust will be?

Yes! We’ll walk you through muffler and pipe options to match your preferred sound.

Do you build exhausts for classic cars?

Absolutely. We specialize in custom work for both modern vehicles and restored classics.

How long does a custom exhaust install take?

Most installs are completed same day, depending on the complexity of the system.

Is my custom exhaust street legal?

We’ll advise you on state and local noise/emissions laws to ensure compliance.

About Denny's Automotive & Muffler Center

Specializing in muffler repair, custom exhaust, name-brand tires & more, we’ve been proudly serving drivers throughout Cedar Rapids, Marion, Hiawatha, and surrounding Eastern Iowa communities since 1974.