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Result is a 16.9 pound street muffler with flexibility. You get the great look of the RoadsterSport rolled and polished tips, the clean flow of the shortest possible path from the midpipe to the exhaust tips to max your horsepower gains, unprecedented level of user adjustment...and minimal weight with these features.
Note that even without using the baffles this muffler is very dual personality because the effect of the Helmholtz chamber is very frequency specific such that under decel it is can be mild and quiet, yet when you roar toward redline it gets exotic and racy. With the top down lots of fun throaty burble, but more tame when the top is up. In brief, FUN when you want it, and more mild when just cruising. What the baffles add is further ability to tune that result, left rear tip pathway is essentially a straight through and adding baffles back to that pathway reduces both higher frequencies and volume, adding baffles to both pathways further reduces overall volume, etc.
SHIPPING NOTE...ships factory direct to you. All POLISHED stainless steel construction. Uses stock hangers and connects to either our RoadsterSport midpipe or the stock midpipe.
The SOUND level is Adjustable by YOU, INCLUDES removeable cone baffle inserts in the tips that help YOU select final sound level, baffle in for reduced sound levels, and baffles out for more sound...and just one bolt under each tip to make the easy change. Sold separate is are optional packed baffles that cut the sound a little more if you want.
Proudly made in the USA...with a LIFETIME WARRANTY!
BRIAN'S APPLICATION NOTES: Almost mild when cruising on otherwise stock ND, delivering a DEEP BASSS THROATY RUMBLE when you wind it out to redline, lots of fun burble when just playing with the throttle around town. Note this is an aggressive sounding muffler when you put your foot deeper in the gas even with baffles installed, those seeking more mild all the time twin tip should look to our SuperQ Twin Tip. NOTE we have report this does NOT clear our harddog hidden hitch!
BRIAN'S INSTALL NOTES:
Installation of this Miata exhaust is SUPER EASY...just two 14mm bolts to loosen! When you open the big box you will find separate foam wrap on the exhaust tip, leave that foam around the tip during your install to protect the polished tips and your car's soft plastic in the exhaust cutout. Use gloves. Note the 'bolts' from the factory are actually studs with springs and nuts and the factory usually jams the nuts on so hard that unbolting it will bring the stud out too. If that does not happen then use 13mm long socket to unscrew the studs (or use jam nut technique where both nuts are put on one stud against each other and then wrench used on the inner of the two to back out the stud). Then lube up the stock exhaust hangers with dish soap and yank stock muffler back and forth to work the soap into the rubber hangers and then the muffler will slide off those rubber hangers easily. Then hang the new muffler on the wet and soapy rubber hangers and torque 'bolts' with the springs back in place to 30ft/lbs. Now you can remove foam tip wrap. Option to remove the baffle too, to do so loosen bolt that holds it from under the exhaust tip and use it as handle to shake the baffle loose and then unscrew bolt the rest of the way and pull the baffle (pulling baffle raises the sound slightly, I suggest starting with baffles removed, most will never put them back). Note the muffler to midpipe joint is a ball socket connection for the first time on a Miata, it is designed to move a lot, so please do not add sealants that will gum up that dry ball socket joint.
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!CUSTOMERS IN Australia CAN NOW GET THESE AT THIS LINK!