Custom Exhaust Shop in Kansas City

Exhaust pricing varies widely based on the type of work. A basic muffler replacement or axle-back swap starts around $200 to $400 installed. A full cat-back exhaust system from a brand like Borla, Flowmaster, or MagnaFlow typically runs $500 to $1,200 installed. Custom fabrication, header-back systems, or turbo-back diesel setups can range from $1,000 to $2,500 or more depending on complexity. We provide exact quotes after inspecting your vehicle and discussing your goals.

It depends on the modification. Missouri requires emissions testing in Jackson, Clay, and Platte counties. Any exhaust modification that removes or bypasses the catalytic converter will fail MO emissions. Cat-back exhaust systems — which replace everything behind the catalytic converter — are fully emissions-compliant in Missouri. We always check your registration state before recommending a setup and will advise you on what passes and what does not. Kansas does not require emissions testing, so KS-registered vehicles have more flexibility.

An axle-back system replaces only the muffler and tailpipe section behind the rear axle. It is the most affordable exhaust upgrade and primarily changes the sound. A cat-back system replaces everything from the catalytic converter back — including the mid-pipe, resonator, muffler, and tips. Cat-back systems produce more noticeable performance gains because they reduce backpressure across a larger section of the exhaust. Both options are emissions-legal in all states since they leave the catalytic converter in place.

A bolt-on axle-back or cat-back system on a common vehicle typically takes 1 to 2 hours. Header installation takes 3 to 5 hours due to the additional labor involved in accessing the exhaust manifold. Custom fabrication work — turbo-back systems, custom downpipes, or one-off builds — can take 4 to 8 hours depending on complexity. We will give you a time estimate when you bring the vehicle in for a quote.

Absolutely. Diesel exhaust is one of our specialties. We install DPF-back systems for emissions-compliant diesel performance, as well as full turbo-back setups for off-road and competition diesel builds. We carry MBRP, FLO~PRO, AFE, Banks Power, and Diamond Eye for diesel applications. Whether you are running a Cummins, Duramax, or Power Stroke, we have experience with your platform.

Under the Magnuson-Moss Warranty Act, a dealer cannot void your entire warranty because of an aftermarket exhaust. They would need to prove that the exhaust modification directly caused the specific failure they are denying coverage for. In practice, a quality cat-back system from a reputable brand rarely causes warranty issues. Some brands like Borla even offer a million-mile warranty on their exhaust systems, demonstrating confidence in their product quality.

Kansas requires vehicles to have a muffler but does not perform emissions testing. Missouri requires both a muffler and emissions compliance in the KC metro area. A full muffler delete — removing the muffler entirely — is technically illegal in both states because both require a properly functioning exhaust system. However, replacing the factory muffler with a performance muffler that reduces restriction while still controlling noise is fully legal in both KS and MO. We can help you find the right balance between performance sound and legal compliance.

We can play sound clips from the exhaust brands we carry and show you video comparisons of specific systems on vehicles similar to yours. Some brands also have mobile apps with sound samples. While nothing replaces hearing a system in person, these resources give you a very good idea of what your vehicle will sound like before committing. If you want to hear a specific system on a similar vehicle, let us know and we may be able to connect you with a local owner who has the same setup.