RoadsterSport Street Single Stainless Steel Muffler for 06-15 MX-5

This MX-5 Miata Muffler was designed for both RACING...and STREET. The original RoadsterSport "RACE" Miata Muffler is an amazing 8 pounds and designed for the autocross and track MX-5 Miata drivers who need to meet sound limits in the low 90 DB range with absolute minimal weight. 

Why a single for street users? Let's face facts, dual exhausts on a straight four cylinder Miata is a ridiculous waste of weight for the serious sports car enthusiast (Mazda talks about gram strategy in the development of this MX-5 but they wasted a lot of weight on duals that provide no performance benefit over singles YET lots of extra weight).

Just 12 pounds means this MX-5 miata muffler is 15 pounds less than the stock MX-5 miata muffler! How did they do it? For this design they started with their 7 pound Race and added more diameter filled with sound suppression materials and they separated the sound suppression chamber into THREE internally baffled chambers for sound wave attenuation in what is still a highflow design.

By using a higher than normal perforation rate on the super high density core, WITH three internally baffled sections, you get absolutely minimal weight and sound for a 12 pound single. 

This 12 pound Miata exhaust compares with 19 pounds for the RoadsterSport II Duals and over 26 pounds for the factory exhaust. Designed to accept Goodwin Racing's glass packed baffle insert to quiet it down more if you like, which is sold separately. SHIPPING NOTE...ships factory direct to you. Final is All POLISHED stainless steel construction and LIFETIME warranty. Uses stock hangers and connects to either the RoadsterSport midpipe or the stock midpipe. Proudly made in the USA. Includes mounting gasket and hardware.

Rolled Tip Design! Had many requests for a new thicker rolled tip for the Street Single. It still works with Goodwin Racing's unique removeable baffles. 

GOODWIN RACING'S APPLICATION NOTES:

Rather mild when cruising on otherwise stock NC, delivering a classic sports car bark when you stick your foot in it...tons of fun, better performance, and much lower weight. Nonetheless, even this big STREET single is not for the faint of heart. The most common question we get on this one is: "will it be too loud" and we cannot answer that one for you because the "right" sound level is a matter of entirely subjective personal preference. However, if the RoadsterSport Q is 10 to 15% more sound than stock (depending on use of removable baffles), and the RoadsterSport II is 15 to 25% more sound than stock, this STREET SINGLE is 30 to 45% more sound than stock on otherwise stock NC (substantially less than the RACE Single which is a full 50 to 55% more sound than stock).

This STREET SINGLE is also a great RACE TRACK and Autocross choice for those running beyond stock class with performance headers or superchargers and needing more sound suppression in a single than the 7 pound Race (but daily driven STREET drivers with headers and superchargers will likely want the RoadsterSport Q instead!). Popular with manual transmission soft top owners, not recommended for those with automatics or PRHT. This muffler takes the same OPTIONAL Packed Baffle.

INSTALL NOTES:

The secret is LUBE your hangers well with dish soap 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).