Call it Dual Personality, Call it Jekyll and Hyde, this is the Rebel in our exhaust lineup and the sound level result depends on what you are doing with the gas pedal and the gear selection. Slam the gas to the floor and run for redline and you get a wonderfully throaty throbbing exotic racing rumble with lots of burble that sounds BETTER than an MX5 Cup Car. BUT when you close throttle you do NOT get the drone and cabin resonance of those pure race cars, instead it gets relatively mild on decel and when just cruising in top gear on the freeway. What we have here is the first Miata Race muffler sane folks can really live with every day without pissing off the wife or the neighbors (unless they WANT to).

Continuing with the dual personality, with the top DOWN it makes lots of fun sound as you work the gears, yet with the top up and cruising just a mild purr on mild acceleration and very little drone when you close the throttle or engine brake or run light throttle up hill.

The secret to getting all this fun without the pain of drone on decel is the exclusive Helmholtz chamber included in this design. In fact, this design is ALL Helmholtz and no traditional sound absorbing materials unless you get the optional race baffle.

How did we do it? We outfitted our 2016 with a computer and sound spectrum analyzer and microphones and drove it under varying conditions and loads with and without muffler. We then use that data and some special software to calculate the particulars of the Helmholtz chamber to precisely knock down the frequencies we do not want to hear in the car while allowing the good throaty burble fun sounds to pass through. In brief, FUN when you want it, and mild when just cruising. The Helmholtz chamber knocks down over 40db of sound in the 120-130 hertz range. That does NOT mean no bass sound, it does mean massive reduction of drone you otherwise get with a straight pipe design

All this in a 12 pound design, a big drop from the 20.5 pound factory muffler. Includes a straight through high flow design from the midpipe out the polished pipe tip for max power.

SHIPPING NOTE...ships factory direct to you. All POLISHED stainless steel construction and LIFETIME warranty. Uses stock hangers and connects to either our midpipe or the stock midpipe.

Takes our optional Race Baffle that slides in and lowers sound level for the extra long drives or between racing weekends (baffle sold separate on this website).

Proudly made in the USA, emissions legal in CA and every other State of the Union.

Slant cut to dress it up just a bit!

** Return orders are subject to a 15% Restocking fee, installed products can not be returned**

*International shipping including PR and HI 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.