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GRAND NATIONAL® SLIP-ONS for M8 FAT BOB® MODELS–Black

Item #: 550-0734
(5 reviews) Write a Review
$595.95
Sound Track
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Fitment

  • 2018–2021 Harley-Davidson® Fat Bob® Models

Features and Benefits

  • Up to 12% more horsepower and 6% more torque (when used with Stealth Air Cleaner Kit)
  • Race inspired design
  • Guardian Black finish
  • Deep performance rumble replaces stock whisper tone
  • No mapping required
  • Removable dB reducer
  • Made in USA!

DISCLAIMER:

*Qualified manufacturer declared U.S. 50-State legal emissions replacement part on all MY 2018-'21 Fat Bob models.

  • 5
    Great Slip-Ons

    Posted by Unknown on Jul 16th 2021

    I had these installed on my 2021 Fat Bob. And without the db-reducers. Great deep growling sound, quite loud (but not too much). And they look great too.

  • 4
    2019 fatbob 114 special

    Posted by Unknown on Jan 1st 2019

    I love the way these black ones look on the bike . They aren't really as loud as i thought they would be however I do see a choice to remove the db reducer baffle . Just want to make sure first that it won't void my warranty. Other than that , the instructions were straightforward. A little advice on the 2019 model, you are better off removing the two bolts that hold the muffler assembly together after the bottom muffler is removed. There is little room to get the two top mounting screws out. By removing those side bolts you can put the top muffler right on then and remount the side piece . You'll see ... have fun

  • 5
    Nice sound balance

    Posted by Unknown on Nov 21st 2018

    Make a nice deep sound without being so loud that you get a headache and your neighbours complain. I recommend you Take the acoustic baffle out

  • 4
    Look awesome

    Posted by Unknown on Jan 27th 2018

    Pipes look great, nice deep tone. Sound a little quiet at idle compared to what im used to, but they sound great once you get riding. Havnt tried them without the baffle yet, but thats because i like being able to start it up for work at 6 a.m and not wake the whole neighborhood.

  • 4
    2018 Fat Bob exhaust

    Posted by Unknown on Dec 16th 2017

    Just installed last Sunday. Very easy to do. Wanted to try out before snowfall on Monday. Short ride as it was only 5 degrees celcius but sound is awesome and looks fantastic on my Black DenIum bike. As for performance to early to tell.

510-0564a-mufflers-2018-20-fat-bob.pdf