RoadsterSport SUPER-Q Stainless Steel PREMIUM ADJUSTABLE Sound MX5 Miata Exhaust for MX5
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RoadsterSport "SUPER-Q" Stainless Steel PREMIUM ADJUSTABLE Sound MX5 Miata Exhaust


Our Best Selling NC MX5 Miata Muffler!

PART NUMBER: 60-13372


Reg. Price: $918.85

Sale Price: $799.00



Free shipping offers apply only to destinations within US Lower 48.

Reg. Price: $918.85

Sale Price: $799.00



Free shipping offers apply only to destinations within US Lower 48.


Our Best Miata Exhaust! We are so confident this is the best MX5 Miata exhaust that we let you drive it for 90 days and if at the end of 90 days you don't love it, you can send it back in original package for exchange to any of our other choices!

Our Best Seller!

Promised for years and we finally got it done, a revised version of the famous RoadsterSport Q that is even more successful at controlling sound for customers making modifications such as highflow headers and superchargers. This is also our top recommendation for customers with automatic transmissions, and or customers with the PRHT hardtop, or any customer wanting something deep and throaty when they put their foot in it but not shouting at them when they are just in cruise mode.

This attenuation design is a premium "NO-DRONE" choice, great for those with manual transmission and especially for those with the AUTOMATIC transmission (which tends to keep the RPMS in the lower ranges). By using smooth mandrel bent 2.5 inch tubing to redirect the flow for a side entrance to the muffler we engineered a sound wave attenuation first chamber to knock down volume level dramatically while maintaining a flow-through design. This attenuation chamber design muffler is the most mild and mellow on an otherwise stock MX5 Miata...about 10 to 15% louder than stock...with a deep sporty burble anytime you hit the go pedal but quiet when you are just cruising.

This premium MX5 muffler is also the BEST choice for those who plan such additional mods as a supercharger or header change (a header change unleashes a massive amount of additional sound). Our latest and best dyno results for an otherwise stock Miata....and for modified Miatas with the header change all the way to supercharged were obtained with the RoadsterSport Q muffler. ALL THE FLOW, without the noise!

Yes, simple BOLT ON that bolts to our midpipe, or the factory midpipe, or our Racing Beat midpipes. INCLUDES New Gasket and fresh Nuts and Bolts to make your install super easy. Weight is 24.5 pounds with baffles removed, 26.5 pounds with baffles installed (stock muffler is over 27 pounds).

Finished in tips which INCLUDE our exclusive baffle cone inserts which are REMOVEABLE and allow you to set the sound to sporty...or quiet. Also available are optional packed baffles (see separate product description) with which you can quiet it down even more for those using a header or supercharger, or race midpipe, etc. This system is 10% to 15% louder than the stock Miata muffler on an otherwise stock MX5 Miata exhaust system....and only 25% over stock sound level when used with our complete 2.5 inch RoadsterSport header and 2.5 inch RoadsterSport midpipe. Baffles are retained by small hex bolts inserted from well under each tip.

Proudly made in the USA with a LIFETIME WARRANTY, emissions legal in all 50 states! Fits all 2006 and newer Miatas with manual or automatic transmission, soft top or retractable hardtop.

Installation of this Miata exhaust is SUPER EASY...just two bolts! You don't even need to jack up the car, this installation can be done in your driveway! Installation notes on our forums --- CLICK HERE TO READ MORE. This Miata exhaust is guaranteed for as long as you own your Miata.

BRIAN'S APPLICATION NOTES: Everything we have learned about MX5 Miata exhausts, all our best tricks, have gone into this RoadsterSport Super Q. It is the perfect FIRST MODIFICATION and still the best choice for anyone planning future upgrades such as a header change or supercharger. It is quiet when you cruise down the freeway but delivers a sporty deep burble when you push your foot harder on the gas. This Miata Exhaust is the choice on my own soft top MX5 for driving around town...and my wife's PRHT MX5, and my strong recommendation for anybody wanting an exhaust with a super smooth burble, or any owner planning additional exhaust changes (header change or supercharger). This is also our top recommendation for owners of the automatic transmission and Power Retracting Hardtop. Does NOT fit with most hitch setups, both items trying to live in the same space and the hitch can damage the muffler.

Even more impressive than the peak horsepower gains is the broad torque gain from low to middle rpms, as shown in the dyno report from our forum 2012 project PRHT which you can read more about in our forum

MAY 2012 Update: New Rolled Tip Design! Had many requests for a new thicker rolled tip. The problem with the rolled tips that all our competitors use is that they are very heavy, which helps partially explain the ugly fact our competitors don't want to admit...which is that most our competition is HEAVIER than the stock muffler. As a famous racer once said, weight is the enemy, and making a muffler that is heavier than stock and calling it a 'performance muffler' is not our style here. It took a big investment in new equipment to come up with a rolled tip that didn't add weight to our best performance design...but it was worth it. These new dual 3.5" OD outlet tips complete the look of the exhaust and provide a more aggressive and sporting appearance. Yes, still works with, and includes, our unique removeable baffles that put YOU in control over final sound levels.


White 2013 below.

Video below of baffle removal process.


Read full installation hints and notes in our forum Installation Instruction Section! The secret is LUBE your hangers well with dishsoap so you can get flanges aligned properly, and torque the supplied hardware to NO MORE THAN 25-30 ft/lbs (using more torque will actually result in LESS seal because you will pucker the flange out at the middle). INTERNATIONAL SHIPPING NOTES: We only ship to USA and Canada but we do have dealers outside the USA. CUSTOMERS IN EUROPE CAN GET THESE IN EUROPE AT THIS LINK!



On Sale
RoadsterSport HighFlow Stainless MX5 Miata Midpipe with HighFlow Converter
RoadsterSport HighFlow Stainless MX5 Miata Midpipe with HighFlow Converter

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Full 2.5 inches and 5" cat for Max Performance!



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Progress Technologies NC Generation MX5 AntiSway Bar Combo
Progress Technologies NC Generation MX5 AntiSway Bar Combo

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Customer Reviews

RoadsterSport "SUPER-Q" Stainless Steel PREMIUM ADJUSTABLE Sound MX5 Miata Exhaust

I'm really pleased with this choice. With top up, you can barely notice anything different between this and stock. With the top down, the difference is very noticeable in a great way; not too loud, not too buzzy, but just right (IMO). The bigger diameter exhaust tips are also a nice touch and help to fill out the cutout in the bumper. Great product!

Excellent choice! Lighter, smaller and much shinier than stock. Went with just the Super Q muffler and it is a smidge louder than stock. Baffles were pulled before install. Nice burble when you start it up and when idling at a light, you can FEEL it in the breast bone... just enough to make your heart go pitty pat :D Very happy with the sound and it took 45 minutes from pulling into the garage to the video clip of first start up. Easy mod to do and makes the Miata smile even bigger. Thanks GWR, for an excellent product.

This is my second exhaust purchased from Goodwin Racing & it has not disappointed! My first one was their RoadsterSport 3 Muffler along with MagnaFlow Midpipe installed on my 2003 Miata in 2015 & I absolutely loved it!

Fast-forward to 2021 & my 2015 MX-5 Grand Touring PRHT with its OEM muffler, which was definitely uneventful! Since the RoasterSport 3 was not available, I decided on their RoadsterSport Super Q. I was concerned that it might be too quiet for my taste, but I live in a quiet neighborhood & didn't want to go too loud & annoy my neighbors.

The installation went very smoothly, especially with the recommended soaping of the hangers & took about half an hour. The baffles were immediately taken out.

It is very quiet from inside the car with top up & I wondered if I'd made a mistake with this muffler. I would agree that it is about 10-15% louder than stock with the baffles out. But, WOW, when driven with the top down, you can hear its great throaty sound! Much, much improved over stock! I wish it were a tad louder, but its sound is marvelous! If I want it louder, I could always add a midpipe! Thanks Goodwin for another winner!!

The stock Miata sounds like a typical 4-cylinder entry level low, cost car. The Super Q has a nice sound worthy of a four cylinder sports car. Installation is easy and build quality is excellent. The good sound adds to the fun factor without adding a high noise factor. There appears to be a modest performance enhancement too.

I'm very impressed with my exhaust. It sounds great but is quiet when cruising which my girlfriend really likes. It has awesome burble during deceleration. I looked at it closely before installation and it is very well made. Installation was a breeze (except for a super rusted bolt on my car) and the exhaust was a perfect fit of OEM quality. I highly recommend.

August 23, 2020 just installed the super Q muffler on my mica red mx5 which was purchased new in 2009. I did remove the baffles before installation. The car is only driven in the summer with only 7400 miles and is in showroom condition. It sounds great now and has a deeper exhaust tone and no drone. Love the little burbles it makes on deceleration and downshifting. The mid-pipe will be next. I have also ordered the Moroso coolant recovery tank and power steering tank in black powder coat. New Michelin pilot sport tires installed this spring, it is good for many more hours of fun. Thanks to everyone at Goodwin for there help, great people to deal with.

Not as loud as I wanted/expected. I was paranoid in buying an exhaust system. It's a lot of money and no idea on how loud it will be. I wanted louder than stock but not super loud either. With the recommendation of Good-win Racing I ran with the Super Q. I have a 2008 PRHT which made this the exhaust of choice according to Good-win Racing again. The install went really quick but the tips do rub on the body panel, Once started the initial purr was not very loud (with the baffles out). It was a nice sound just not loud enough. I revved the engine and it seemed to get quieter (IMO). So if you want a louder than stock exhaust then this might not be the choice for you. If I had to do it again I would choose something else.

i agonized over this. i loved the look, but i was afraid it was going to be too loud. i'm 68 and i live on ozzie and harriet street. i needn't have worried. it looks fantastic, it sounds great (even better after several hundred miles), and it is NO WAY too loud. i decided i would start with the baffles out, and if anything i wouldn't mind a little more growl. but it's noticeably different from stock. a nice little burble on compression. no popping. WOT sounds great. cruising at 60 is not remarkably different from stock. just do it. oh, and the install maybe took 20 minutes, and i am NOT a mechanic. just do it. you'll be especially pleased with the quality.

On different Miata's I have had the Roadster II and the Race muffler and I way way much prefer the "Q". It sounds better then all of them with just the right note when you want it. I did what someone else said to do with one baffle in and the other out'┬Žit's perfect!

Hand's down it's the best I have had.

Thank you, thank you. Always great shipping, great customer service, and great product.

I purchased a 2011 Miata on 9/3/15 and it had straight pipes after the mid pipe with NO muffler. Quickly installed the Q muffler. I don't have any comparable muffler info but I really like the Q sound. Removable baffles are a plus so you can have it quieter or louder. I like the baffles removed. Quality stainless build. A really nice piece for the money. Would buy it again.

Super easy installation .. (once you get your old stock one out..) beautiful bass-ish sound, not the screaming and coughing one, but rather the voice of a heavy 60 yrs old female smoker Who knows how to sing.. (think.. Marianne Faithful) not much over the stock one in terms of dB, but the soothing sound ... I can actually record it and listen to it in a loop before going to bed. In higher speeds it kind of blends in with the wind and engine - but you can still get that bass vibe. I actually stopped listening to my Bose radio system to enjoy this muffler. At least for now. Also, might be dreaming - but I think it also added some hp to my princess. Anyways - quality is top notch. I'm a very satisfied customer.

I pulled the Super-Q out of the box and removed the gimmicky baffle cone inserts. If you're going to buy an exhaust like this why would you want to make it quieter by restricting airflow, just buy another exhaust thats quieter. This thing is awesome! It sounds so good when I put my foot into it all the way up to 6.5Gs, then coasting down a slight hill between 1 and 2 Gs the Q produces beautiful bassy pop/snap sounds, that works for me. MS

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