Exhaust Repair in Washington UT
Mufflers, pipes, hangers and catalytic converters for cars, trucks and SUVs, through to full performance exhaust systems.
MST Motorsports provides professional exhaust repair in Washington, Utah, for Ford, Chevrolet, GMC, Ram, Jeep, Toyota, Honda and Nissan cars, trucks and SUVs, from a stock repair to a performance upgrade. Our factory-trained, certified technicians repair exhaust leaks that waste performance, increase noise and allow exhaust gases into the cabin, and every install is completed with proper hangers, proper clearance and proper welds. Qualifying automotive repairs are backed by our 36-month/36,000-mile nationwide warranty.
Exhaust Services
Muffler Repair & Replacement
OE and performance muffler repair and replacement for St George and Washington County drivers, installed with correct fit, correct hangers and the correct sound.
Catalytic Converter Service
Catalytic converter service across Southern Utah with OE-quality direct-fit and universal converters, with diagnosis first so a converter is replaced only when it is the actual problem.
Exhaust Pipe Repair & Fabrication
Custom pipe bending and welding for lifted and modified vehicles where off-the-shelf parts do not fit.
Exhaust Manifold Repair
Cracked manifolds, broken studs and blown gaskets are diagnosed and repaired, a common failure on high-mileage trucks that work through Southern Utah heat.
Performance Exhaust Upgrades
Cat-back exhaust install, long-tube headers and axle-back kits, installed clean, welded when required and aligned properly.
Warning Signs
- Louder-than-normal exhaust note or a raspy/tinny sound
- Rattling or clunking under the vehicle over bumps
- Decreased power, poor fuel economy, or hesitation
- Exhaust or 'rotten egg' smell inside the cabin
- Visible rust, holes, or broken hangers under the vehicle
- Check engine light with O2 or catalyst-related codes
Performance Upgrades
Performance exhaust upgrades for trucks, Jeeps and Broncos from Hurricane, St. George and Washington that need more sound and less back-pressure: Cat-back exhaust systems, long-tube headers, and performance mufflers.
We install and service MagnaFlow, Corsa Exhaust, Borla Exhaust, MBRP, Flowmaster, GGB Exhaust and other brand-name systems, with hangers indexed correctly and proper clearance from fuel lines and driveline components. The quality of the install matters as much as the parts.
On the powersports side we install and service MBRP Powersports and GGB Exhaust systems for side-by-sides.
Serving Washington, St. George, Hurricane, and all of Washington County.
Repair, Replace, or Upgrade
Schedule your exhaust service online, or call or text (435) 256-8899.
Frequently Asked Questions
How do I know if I have an exhaust leak?
A louder-than-normal engine note, a tinny or raspy tone under acceleration, or a ticking sound at cold start that fades as the engine warms are the common signs of an exhaust leak. Any exhaust smell inside the cabin is a safety concern because exhaust gases carry carbon monoxide, and it should be diagnosed as soon as possible.
Can you install aftermarket exhaust?
Yes. We install cat-back systems, headers and axle-back kits for trucks, Jeeps and Broncos, including MagnaFlow, Corsa, Borla, MBRP and other brand-name systems, with proper hangers and clearance.
Do you work on diesel exhausts?
Yes. We service diesel exhausts including DPF, DEF, and factory emissions systems on Power Stroke, Cummins, and Duramax platforms. We keep diesel work compliant with federal law — no emissions tampering, just proper diagnosis and OE-quality repair.
Book Service
Call (435) 256-8899 or . Serving Washington, St George, Hurricane, and all of Southern Utah.