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Vibrant Performance Vibrant 1147 Streetpower Black Flat Oval Muffler, 20 inches

Free shipping on orders over $29.99

$137.91

$ 55 .99 $55.99

In Stock

About this item

  • Designed to minimize noise
  • Constructed from t304 stainless steel
  • Features "true straight through" perforated internals
  • Compact and easy to install
  • Five year limited warranty


Vibrant Streetpower Black Flat Oval Muffler is designed to minimize the noise produced by the vehicle’s operating system. It is constructed from T304 stainless steel and features a "True Straight Through" perforated core to avoid performance loss. This muffler is compact, easy to install and is Five year limited warranty.


Deadmechanic591
Reviewed in the United States on January 30, 2025
I have a 03 Honda accord coupe v6 manual. When I say it’s hard to find an exhaust system for this car without sending an arm and a leg it’s hard. I got 2 of these and had my local exhaust shop straight pipe 2.5in from the j pipe all the way back to the vibrant mufflers and it’s an amazing sound not loud and raspy sounds good
Xavier Brown
Reviewed in the United States on April 10, 2023
Very effective in exhaust noise reduction! I have locked vtec on my turbocharged civic with a 3" exhaust and before you couldn't hear yourself think while on the highway, but after installing this coupled with the ultra-quiet resonator, you can actually have a conversation on the phone while driving!No noticeable drop in power either, but I haven't gone back to the dyno as yet for a more objective comparison!
michael strange
Reviewed in the United States on March 24, 2021
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Jimmy james
Reviewed in the United States on December 9, 2021
This product is well made. IT WAS INSTALLED THE SAME DAY. ITS NOT VERY LOUD MUCH BETTER THAN THE STOCK ONE..THE TONE IS VERY DEEP...NO DRONE. THE PRICE AND CONDITION WAS GREAT FOR A USED PRODUCT..
Noah Walker
Reviewed in the United States on November 15, 2021
Works just like i wanted to quiet down my Turbo Honda S2000 with 3" straight through exhaust. I have a 3" off the turbo to a Vibrant ultra quiet resonator, a "wiener" pipe coming off perpendicular after that for drone, then a Floshine Universal Stainless Muffler cut down to a 10" so it would fit where the stock resonator was and then this Vibrant muffler at the end and it looks great with no drone at all and im super happy with it !
Kaine
Reviewed in the United States on October 1, 2021
Great product as described. Installed on 2001 Integra type R
Rovil Florencio
Reviewed in the United States on October 11, 2020
I used this on my kswapped ek sedan, and it sounds way much better than the muffler I got on ebay, way cheaper too, so I had to get the Vibrant ultra quiet resonator as well. Best set up to remove drone sound, almost sounded like my friends set up with his ktuned turn down muffler. Overall happy with the purchase. Highly recommended for people that have a kswap!!!
redremora
Reviewed in the United States on December 19, 2019
I put together a custom exhaust on a 2001 accord with an H22A swap using this muffler.Used 3" stainless piping, this product and a Vibrant 1142 3" Ultra Quiet Resonator.The car feels great to drive now, definite power improvement, but the amount of drone and interior vibrations are unbearable, lol. My fault for thinking a straight through muffler could be decently quiet.The exhaust tone is very low and bass-y, can feel it in my chest standing behind the car. There is a bit of rasp but the overall tone is pretty nice. Used a spectrum analyzer app, sound level peaks at 75-115 Hz.I would not recommend this product for a daily driven car without some extra resonators, e.g. helmholtz.EDIT:After 5,000 miles the volume of the exhaust has settled significantly. There's still a little drone but the experience is completely different. It's not as loud, the floor doesn't vibrate any longer, I get surprised by how quiet it is while idling. The tone is still deep and low just not as loud when idling or cruising.I changed my rating from 3 stars to 5 because while my exhaust is still 'loud' by any standard, it's hard to believe its not louder considering it's a three inch 100% "straight through" exhaust (no baffles anywhere).These mufflers are doing a lot of work and are doing a good job.
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