RoadsterSport Super-Q Axle Back TWIN TIP - ND

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$699.00 $639.00
(You save $60.00)

Twin Tip version of our famous SuperQ.

Following the huge popularity of our NC application "Q" Muffler this Q for ND is once again "Q" for Quiet version. This attenuation design is a premium "NO-DRONE" choice, great for those who want a more throaty sound than stock but still mild. Smooth mandrel bent tubing redirects the flow for a side entrance to the muffler where we engineered a three chamber design. It would be much cheaper to just use a single big muffler with nothing but perforated pipe through the center surrounded by sound absorbing materials, but doing it right with the three chamber design allows us to tailor precisely the FUN sound you want when you push it toward redline, without the harsh drone on decel that the more simple designs make you suffer.

This triple attenuation chamber design muffler is the most mild twin tip of our choices and mellow on an otherwise stock MX5 Miata...about 20% louder than stock when on the gas...with a deep sporty burble anytime you hit the go pedal but nearly as quiet as stock when you just want to cruise.

This triple chamber design features an exclusive 'Helmholtz Resonator' first chamber that massively reduces the standing wave inside the exhaust system, reducing the 'booming' tendency by over 50db inside a top up Miata cabin that is common on many aftermarket Miata exhausts. To create this Helmholtz chamber we outfitted our 2016 ND Gen Miata with a computer and sound analyzer and microphones and drove it under varying conditions and loads and without the stock muffler for the computer to carefully measure the sound spectrum coming out the stock midpipe. We then use that data and some special software to calculate the particulars of the Helmholtz chamber size and valve specs to precisely knock down the frequencies we do not want to hear in the new Miata while allowing the good throaty burble fun sounds to pass through. The result is deep throaty fun, without the drone!

The Helmholtz chamber gives this muffler a dual personality, under decel it is super mild and quiet, yet when you push hard toward redline it gets more fun and racy! With the top down lots of fun throaty burble, but dramatically more tame when the top is up. 24 pounds. In brief, FUN when you want it, and yet totally mild when just cruising top up.

Yes, simple BOLT ON install, just two bolts!

INCLUDES our exclusive baffle cone insert in the Tips which is REMOVEABLE and allows you to set the sound to sporty...or quiet. Also available is our optional packed baffle with which you can quiet it down even more. This system is 10% to 15% louder than the stock Miata muffler on an otherwise stock MX5 Miata exhaust system....and only 20% over stock sound level when used with our RoadsterSport midpipe. Works great with stock midpipe or RoadsterSport Midpipe. Customers planning a header are encouraged to order special Header version of our SuperQ that adds additional resonator on inlet side to best cope with the raspy sounds unleashed by a header swap. Baffles retained by small hex bolt inserted from well under each tip.

Proudly made in the USA with a LIFETIME WARRANTY, emissions legal in all 50 states. Fits all 2016 and newer Miatas with manual or automatic transmission, soft top or retractable hardtop. This Miata exhaust is guaranteed for as long as you own your Miata.

BRIAN'S APPLICATION NOTES. MORE aggressive sound than our other SuperQ choices! Not just two tips on one pipe from the muffler, true twin exit from the muffler means a bit more sound than all single tip versions of SuperQ. And sound frequency balance is very different from each tip, the driver's side tip is essentially skipping final chamber in the muffler. That means you can have some fun mixing your own sound here using baffles in just one tip or the other. And, use of our exclusive baffles will have a big impact on sound reduction with this version, use of baffle in the driver's side tip will have the most reduction in sound level because that is the most direct route out. Result is many levels of sound, lots of control by the end user and ability to dial the result to your own preferences. My recommendation is remove the included baffles before install, my bet is that many never put them back because this muffler is quite mild on otherwise stock MX5.

*International shipping rates will not calculate properly for this product, if you need a quote for international shipping - please contact us first! If you do not contact us prior to purchase, we will invoice you for the remaining shipping costs.