1st time around a couple of years ago they straight piped my ecoboost mustang.2nd time around I was wanting to get exhaust work on a gt mustang which was on racing springs. They were unable to do work on it because its to low.If you have a daily driver that needs work done, this place is for you but if you have racing suspension or a lowered vehicle look elsewhere.

I took my 1974 Stinray Corvette L82 in for a new exhaust system. I talked to Ray and he was very helpful and informative. Made an appointment and took it in. I had Dual MagnaFlow stainless steel exhaust system installed from the manifold all the way to the back, topped off with chrome tips. It looks great and sounds even better! I also had an oil change. The are Fast, Friendly and Professional! AAA+++

Very speedy, friendly and economical!! A great place!!

Their “muffler guy” is a complete joke and rude for being talentless i have seen a 2 month old child lay down a better bead 🤦‍♂️

The big muffler in Moore Oklahoma is definitely a worthy store. they are a business that have been around since the 40s with one main goal. Making sure that mufflers are replaced on time and oil changes are done with the best of care. This is a business I went back anytime patronage.

2013 LS3 Corvette - Drove in from Texas, Im very particular on who does work on my Vette. After 2 weeks of careful consideration this man definitely knows his trade. He has been thoroughly descriptive, informative, and patient the entire time. Ive had 9 vehicles done around the OKC / Moore area; my opinion on this muffler shop is #1 due to service, quality, and most importantly SATISFACTION!

As always gr8 service. No miss, no fuss

Great service

Very nice place of business, talked to the owner for a bit and I would definitely recommend this place for your auto needs.

Great fast service and excellent customer service.

Welding is horrible there are open spots all over the welds and when you take it back he acts rude and says it’s not his fault I didn’t explain everything. On top of that he will break your stuff and expect you to buy another instead of paying for what he broke. I DO NOT RECOMMEND

I must say that if I ever have anymore problems with my muffler... I WILL MOST DEFINITELY COME BACK HERE!! Great pricing, same day service was in & out in less than an hour!! HIGHLY RECOMMENDED!!!!!!!

Great place to go 2 guys were very respectful and very nice. Gave me several options to go with on my dual Exhaust. For the price I paid it was worth it an there fairly good prices. I would totally recommend going here. I know I’ll be seeing them again thanks for your service.

Absolutely recommend this place. I had major front exhaust damage they were very patient explaining and even showing me the damage. Even offered to let me go down in the pit so I could see it.They are locally owned and operated with a long long history in the OKC area

They have always done a great job for me

These guys get it done!!!

Always fast, efficient & friendly!

Fast . Great service. They take the time to listen to u need. Fear price.

Quick service and solid quality on the welding I needed. Good price and good value too. I will be recommending Big Giant Muffler to friends and fellow Mustang Club members. BREW!!!

Randy and his crew took great care of me!I was in and out in a flash and was treated right!!GOOD JOB GUYS!!

These guys are great. Very helpful descent pricing . Great experience.

Best place to get a oil change. People are very friendly. Ive been going there for about 10 years. Prices are fair.

Nice. Fast. And Locally owned! Always do a great job!

Very respectful and quick. Definitely did the job!

Im glad Ray is back doing Mufflers theres nowhere else to go hes the best

Jack and the crew were awesome. I’ll be getting my oil changed here from now on. Plus and other work my truck might need.

Good service got me in and out quickly and for a reasonable price. asked me to leave a review because a disgruntled former employee was flaming them with a bad review. everybody always screams when they get bad service but barely do anything when they get good service, that is why i took the time this time to post a review.

Ive used this center for 20+ years. Dependable and nice.

Ive been taking my vehicles there for years....wouldnt trust anyone else! Professional and friendly! Wonderful place

Talk about wasting time this is your place to waste time. Talked to a guy to drop off my car and get my exhaust fixed. If you can’t do it then say so. But when I drop it off and then leave it for 5 hours and another guy gives me my keys and say you don’t do this kind of work. Doesn’t make sense then I asked in confusion from what the other guy said and gets told if I have a problem then I can talk to the manager. Well I was just simply confused. But now we got a problem. But after all I didn’t waste my money but wasted my time. Could have gone to a better shop.

Came in from out of town and need a quick fix and they got it done in 5 min. Would recommend anyone!!!

Excellent work and theyll have you in and out. I have a heavily modified lowered vehivve and they were very accommodating and made sure everything was perfect.Anyone with a custom vehicle, this is your location for echaexh work.

I had my exhaust done here a year ago.Brought it in because some of the hanger brackets had broken.Ray fixed everything for me, and reinforced it.He was grumpy and outputting at first. I think it was because I got there as they were opening.He did a great job and only charged me for parts!

Great people. Refused to charge me for a simple fix to my tailpipe that the dealer wanted $250 for. Will be back.

Great service. They did a great job on my muffler. The owner Jack is an icon.

BIG GIANT MUFFLER IN MOORE OKLAHOMA WILL RIP YOU OFF. I went there and was supposed to get a flowmaster with dual exhausts out the back. When I was left there I still had a exhaust leak that I had to fix because they couldnt fix it, even though they are a muffler shop, and also I had looked at my muffler that was supposed to be a flowmaster and it was not. It had not markings what so ever And when I went and tried to talk to them they just said it is but it is the ko series. It was a knock off flowmaster that is NOT a real flowmaster and also cheaper than a real one. They charged for a FLOWMASTER. NOT A KO SERIES FLOWMASTER WHICH IS NOT EVEN A REAL FLOWMASTER. THIS IS FALSE ADVERTISING AND A RIP OFF. But when I tried to call them back then they would pick it up and hang up on me. Worst muffler shop I have ever been to. I wouldnt have even given them one star but I had to to be able to post this

They do good work! Took my truck to get some exhaust work done,and they fixed it right for a reasonable price.

Absolutely the best place for oil changes. Excellent and courteous service.

I Took my 2005 corvette in to have a catalytic converter put on the make it quieter.... he advised me to add magnaflow mufflers instead and boy was I pleased with the outcome.The shop owner is knowledgeable and saved me a great deal of headache and money! In and out within 45 mins!!The car runs better and sounds amazing!Best muffler shop I have ever had the pleasure of dealing with and I will reccomend him to EVERYONE!

The old guy seemed very nice but the younger one seemed like he was pissed off at the world. I’m sure these guys have done good work in the pass, but unfortunately when it came to my 2003 cobra, it was some of the worst bending I have ever seen. I give two stars bc of the friendly older guy, and they fixed my original problem which was moving pipes away from where they were rubbing other parts. It sucks for me bc I’ll have to spend more money finding someone that can make the exhaust look better.

Always take my vehicles here! Employees are always friendly and helpful....highly recommended to anyone!

They were very kind.worked with the price.much appreciated great place to have work done 👍

Great service! Jack is a super great guy and did good work for a good price!

If you have a need for a new exhaust system,, always think Big Giant first. Custom exhaust,,, no bolt on garbage!

Jack is always great. Been coming here since I got my first car!

The employees here are so helpful and managed to get me in and out in a perfect timing.Id recommend this place for any convenient and affordable oil changes.

Awesome customer service. 5 stars all the way!

Have been using them for 20 years. Always quality work and visual explanation of the work needed.

They get two stars because their prices arent bad but their service sucks they only have one guy that does exhaust. He is never there or always busy

I plan on taking my Challenger RT to these guys because of the many good reviews. Plus take this opportunity to address the bad review posted by the guy with the new truck. He made it sound like the shop caused all his woes, but it is obvious from his review that he took a brand new truck and chopped the exhaust off and dumped it under the cab, which eliminated the factory resonators, hence the awful drone he mentioned. Im assuming the muffler shop only did what the customer requested, and the resulting sound and power loss is not the fault of the muffler shop but instead the result of poor decisions by the truck owner. Im giving them four stars for now and a later review after they work on my car.I am editing this review because I did not post it. I have never considered big giant muffler as a source for my exhaust work. And I would not give a four star rating to any business I have not used. NOT ME!

Don’t waste your time, Ray the guy that works there has no customer service experience at all. The work they do is terrible.

They did a great job.

Great place they were very helpfull

Jack the owner very personable and always looking out for his customers. Its the only place i go for my oil changes, brakes and mufflers.

These guys provided great service at a great price and when I had an issue that they werent equipped to deal with their recommendation was top-notch as well. Id certainly recommend them for routine service and exhaust work.

They have two good lube Techs working for them!!!!

Wonderful honest people they dont pressure u they visually show u whats wrong with your car they keep u Rollin..

Amazing mechanics and quick, good work was done. Would always go back.

Check engine light came on. Turned out it was just due to a loose gas cap. They werent like some places that charge you just for checking.

Went in for a quote, left with a new quiet exhaust at a reasonable rate! They took about 30 minutes with no appointment would recommend!!!

Good work.

Great place for an oil change.

Haha two remove a muffler is 75 dollars and for 2 is 150?? About a foot of pipe is all thats horrible prices 😂😂

Inconsistent service....

Ghood people they told me what i needed

Very good service that i had

The owner for over 60 years is customer service first.

Loved it great work

Do great work

Cheap to get a muffler replaced. But cheap quality too

Awesome