EXTRA EXTRA - RoadsterSport SUPER-Q Stainless Steel Premium Adjustable Sound Muffler ND GR-026

EXTRA EXTRA - RoadsterSport SUPER-Q Stainless Steel Premium Adjustable Sound Muffler ND GR-026

MORE product details for the - RoadsterSport SUPER-Q Stainless Steel Premium Adjustable Sound Muffler ND GR-026

The Helmholtz chamber gives this muffler a dual personality, under deceleration it is super mild and quiet, yet when you push hard toward redline it gets more vocal and racy! With the top down lots of throaty burble, but dramatically more tame when the top is up. Yes, simple BOLT ON install, just two bolts!

Includes our famous RoadsterSport Super Light 3.5 rolled tip originally developed for NC application. It took a big investment in new equipment to come up with a rolled tip that didn't add weight to our high flow performance designs...but it was worth it. This 3.5" OD outlet tip completes the look of the exhaust and provide a more aggressive and sporting appearance than the very tiny pair of of polished pipe outlets used on the factory muffler:

ND Exhaust DynoINCLUDES our exclusive baffle cone insert in the Tip which is REMOVABLE 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 for those using a header or supercharger, or race mid-pipe, etc. This system is 10% to 15% louder than the stock MX5 muffler on an otherwise stock MX5 exhaust system....and only 20% over stock sound level when used with our RoadsterSport mid-pipe. Baffle retained by small hex bolt inserted from well under each tip.

Made in the USA with a LIFETIME WARRANTY. Fits all 2016 model and newer MX5s with manual or automatic transmission, soft top or retractable hardtop.

This MX5 exhaust is guaranteed for as long as you own your MX5.

Dyno report! Peak torque gains moving up from 136 to 139 Ft/lbs and peak HP up from 142 with stock muffler to 145 with the high-flow muffler. Best torque gain is 5+ Ft/lbs torque in the midrange right where most folks are driving. Much more testing to come.

Ride Along with our RoadsterSport Q in Launch Edition owned by local customer Mark Booth below, big thanks to Mark for the great video!


Brian GoodwinBRIAN'S INSTALL NOTES: Installation of this MX5 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 a 13mm long socket to pull the stud, 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). Note the muffler to mid-pipe joint is a ball socket connection for the first time on a MX5, it is designed to move a lot, so please do not add sealants that will gum up that dry ball socket joint.