Grain Valley Custom Muffler Shop

This business has always taken care of us in the best way. From muffler work to inspections, they're the best. We just had a small hole appear in the exhaust pipe, and where I can see others taking advantage and charging high prices, they pointed to the small issue and repaired it on the spot. They are crazy busy so keep that in mind when making an appointment, but totally worth your time.

I had a fantastic experience at the muffler shop! Unlike other places with week-long appointments, they inspected my vehicle immediately. The staff was incredibly friendly and professional. I appreciate the prompt service and will definitely be a returning customer. Highly recommend! 👍

I have had multiple cars here over the years always treat you fair and if you have appointments they are quick I recommend to everyone

Got me right in and had issue diagnosed in fifteen mins. Another 45 to replace busted Cat and I was on my way. Super friendly service.

“PERFECTION”
I doesn’t get any better than this!
Thank you Jeff and the team for doing a great job on my 1970 Mach 1 exhaust.
If you need a custom exhaust Grain Valley Muffler is the place to go!

Been going here for a long time. I will continue to use their services. They are honest and have fair pricing!

They were able to squeeze me if for a hanger replacement and inspection done in a timely manner!!

Friendly staff. Quick service. Does not overcharge you for their service.

I took my car in to get an exhaust leak in the flex pipe fixed and they were amazing! They had the job done in less time than expected and it was done well. The price was extremely reasonable as well. And they were very polite.

Awesome place to take your vehicle for exhaust work. As long as their doors are open, I'll never go to another place for work. Great people, helpful and know their stuff!

Very nice people did a great job .I called several times because I kept forgetting to ask some questions. The girl that answered the phone very nice every time . I never felt like she was put out answering my questions. I thank her for being so nice !

They always rock. Fast work super competitive! I paid $90 for my muffler that was 10 years ago though LOL! Update people got this place in trouble by posting that they pass "Anything"! That's not true and shouldn't be posted. People are very mean and shallow and shouldn't be so immature about what they say about people places and things! Just had to get a new muffler it was $150 not bad considering all of the money robbing all businesses are doing nowadays and calling it inflation! They still do great work and for a reasonable price!

Great fast service and pricing. I went to Bird Automotive in Oak Grove and they quoted my flex pipe at $650.86 - I went to Grain Valley Muffler and paid $110! I was in and out in about 30 minutes. If I ever have an issue with my exhaust again I will be going back to them!

Only have ever gotten inspections here but they are always fast and with great customer service. They are busier now so you do usually need to make an appt in advance.

Great service and professional. I had left my vehicle for several days, and they never bothered anything . Also, the work they did came with a 1 year warranty.

Totally cool place..
will recommend to everyone within range or any co-worker that asks about such a thing..
phoned them up around 9:30, locked in same day appointment at 3pm.. arrived, greeted by 2 young ladies who were both sweet and courteous. Started off on the right foot..most places are vultures with zero positive vibes..this was great.
I was in for a catalytic converter replacement (mine was stolen at my job..extra lame) they quoted me in parts/labor a extremely fair price..won't say because it's not right to share pricing..from discussion to agreement took 20 minutes..
later learned it even comes with a 50k, 5 year warranty.. Also
I believe they do other repairs and state inspections too btw..
I was in and out around 40 minutes..lovely ..would highly recommend..

Their prices were very reasonable, and when something wasn't right, they fixed it.

Just went in to get a state auto inspection. They are always fast and friendly. Not able to go in on Saturday mornings like I used to. I had to have an appointment. My experience is, that they are fair priced.

Great Service! Thank you!

Been going to them for 20 years. Great work at a fair price