Vance & Hines Quiet Baffle For Fishtail And 3" Round Twin Slash Slip-On Mufflers
  • Vance & Hines Quiet Baffle For Fishtail And 3" Round Twin Slash Slip-On Mufflers

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Video Reviews (3)

Vance & Hines Quiet Baffle For Fishtail And 3" Round Twin Slash Slip-On Mufflers Videos

This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

Vance & Hines Quiet Baffle For Fishtail and 3" Twin Slash Round Slip-On Mufflers

Quiet baffle reduces sound level by approximately 2-3 dB.


  • Sold each
  • Made in the USA
4.3 / 5
Bang For The Buck
4.7 / 5

Fitment Notes & Exceptions

This is a universal fit part; it may or may not fit without modification.

  • Designed for use with V&H Fishtail and 3" Round Twin Slash slip-on mufflers only
Product Style RevZilla Item # Manufacturer Product # Availability
Vance & Hines Quiet Baffle For Fishtail And 3" Round Twin Slash Slip-On Mufflers 845162 21899 In Stock: Ships within 24 hours


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4.3 / 5.0
24 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Bang For The Buck
4.7 / 5
Bang For The Buck
5 / 5
Install notes to make things easier
Great product, really love the deeper, throaty sound these baffles give my V&H Twin Slash exhaust system on my Vulcan 900 Classic (2 or 3 dB reduction, not nearly as ear-splitting sharp pop).

Some install notes:
1. Pull both rear heat shields off before starting job.
2. Extract stock helical baffles after removing set screw using a pair of needle nose pliers or vise grips on the square backing plate for the set screw.
3. Quiet baffles come with (in this mechanical engineer's humble opinion) far too much fiberglass batting wrap. Here's what I did when it became obvious that these would bind and not fit properly without modification:
A) cut tape on batting, and unroll 6-8" on batting from baffle assembly (there's a fiberglass mesh backing seam that gives a natural margin), cut a remove excess batting material.
B) re-wrap batting tightly, and re-wrap the entire length of fiberglass with a continuous length of clear packing tape (this will burn off in 200-300 miles of normal exhaust temps, no worries).
C) lubricate 1/2 to 2/3 the length of taped batting with silicone lube/vegetable shortening/anything that won't dissolve the tape, leaving the end with the set screw "dry" so you can keep a good grip.
4. instead of the 1.5 hour horror story installs, the baffle will now insert rather easily with a little "with the wrap" twisting and tapping with a dowel and rubber mallet. 2 minutes, tops.
5. Go slow lining up the set screw hole and the square backing plate. Small adjustments with a pair of needle noses on the backing plate. Truthfully this can be the trickiest part. Go slow, be patient and persistent and the threads will grab
6. Thoroughly clean exhaust pipe before reinstalling heat shields. Clean heat shields after installation.
6. Start her up and listen to her new growl! You will smell the tape and lube cooking off as the exhaust stream heats up the assembly. In a couple hundred miles, the tape and lube will be totally burned off and the batting will fully expand, finalizing your awesome new growl that won't cheese off the neighborhood at idle.
September 27, 2015
1 year ago
2009 Kawasaki VN900B Vulcan 900 Classic
Bang For The Buck
5 / 5
Does what its supposed to.
These come labeled as "Mamba" but the barcode says Vance and Hines, they are sold each so you need to buy more then 1 if you plan on doing more then 1.
Installing it is impossible to get them to fit without some modification, mine went smooth and quick. I just used what another review said to do. Unravel the insulation around the baffle, cut off about 6 inches of it, rewrap it as tight as possible with packing tape and use a little lubrication (I actually used a very very small amount of vegetable oil) line up the screw hole before you get the baffle all the way in makes it real easy, couple taps with a rubber mallet and its over.
Starting the bike it makes a huge difference, before my ears would ring when I was done riding, it has a distinctive "Harley" sound still and after I completed my stage 1 it is absolutely perfect in what I was trying to achieve.
November 30, 2015
11 months ago
2015 Harley Davidson Sportster Iron XL883N
Bang For The Buck
5 / 5
Perfect solution, problem solved!
I bought the Vance & Hines 3" Round Twin Slash Slip-on Mufflers, Screaming Eagle Stage Air Filter & V&H Fuel Pack FP3 Auto Tuner for my 2015 Harley 48. Everything worked great, the 48 was no longer choking for air. The bike upgrade worked as planned except that the V&H slip-ons had the standard" straight-through" baffle which was much louder than I expected. I liked it for a while, then realized, my neighbors - didn't so much and I was increasingly aware that the bike was simply too loud. I ordered and installed these baffles and it sounds GREAT!! Bike breathes well,with the same deep growl Harley tone, just a few decibels lower. Easy to install (with a little muscle and patience). Loving the ride even more now! Problem Solved!! Would highly recommend!
August 16, 2016
2 months ago
2015 Harley Davidson Sportster Forty-Eight XL1200X
Can be a pain, but worth it.
There isn't a lot to review in something like this but if you're on this page, its because your V&H included baffles are just too loud. The installation was a pain, I had very low miles on the pipes but just pulling out the stock baffles was a small chore. Getting these to just "slip in" is a joke. I've seen a few videos where some slip in and I'm convinced their pipes are probably 3" in diameter, the slash staggered exhaust is closer to 2 5/8" and pushing these in, they like to bunch up. You can fix the bunching with some 20-24ga wire and a little more tape, but plan on spending some time slowing wiggling these in and making sure they dont bunch up too much. I'd say wear glove, because the fiberglass is rough.
Overall, this did what I needed. I was at over 100db just at idle and now I'm between 87-93db and its tolerable. If you like it louder than that, you're on the wrong page!
I am running a 2014 VN900 custom with twin slash staggered:
April 23, 2016
2014 Kawasaki VN900C Vulcan 900 Custom
Served its purpose
I have the V&H twin slash slip-ons. Loved them at first - gave me butterflies when I first rode away on them, like I had a brand new bike again. However, after a little while, I realized I had a headache and my ears hurt. Couldn't determine at first if it was due to lack of coffee and/or riding in higher elevation, so I gave it a while, but my ears still hurt after riding at high RPM's for a while, like on the highway. I think I already have hearing loss, so I didn't want to make it any worse.
Bought these quiet baffles a while ago, but could not for the life of me get the V&H stock baffles out. Had to take it back to shop and they did it super fast. Bike still sounded good as they drove it around. I certainly do miss the explosion of sound when I'd crank the engine with the V&H stock baffles and the loud but low rumble at red lights. However, my ears thank me because I no longer get headaches or earaches from riding anymore. It's kinda hard to describe the sound of the pipes now - other reviewers described it as low & "throaty," I guess that's accurate. Sometimes I also think it sounds like the classic motorcycle sound I imagined in my head when I'd pretend to ride an imaginary motorcycle when I was kid.
Anyway, overall I wish the bike retained the same loud low rumble at idle, but it still sounds good & it's a trade-off I'll gladly accept to keep my ears healthy.
December 6, 2015
Bang For The Buck
4 / 5
Good Product To Keep The Peace.
Purchased V&H Twin Slash slip ons for my Sporty about a month ago. Awesome pipes but loud. Not that I didn't like the sound, I loved it! But my neighbors didn't so to keep the peace I bought these quiet baffles. I read some reviews prior to purchase and based on those I expected the install to be a pain but that wasn't the case. I did remove about 3" of the "fiberglass" (it is actually a ceramic product, not fiberglass at all), re-taped it around the baffle and installed. The fit was snug but not difficult. The sound is definitely quieter than the standard baffle, less edgy but still throaty. Somewhere between stock and the standard that comes with the pipes. Performance is still better than stock too. Don't forget to remap fuel for the new baffle!
October 23, 2015
2015 Harley Davidson Sportster Custom XL1200C
Not the sound I was looking for
I bought the slip ons for my sportster. At first I thought they were too loud, so i bought the Quiet Baffle. However after a few rides I thought they sounded too muffled, much quieter but lost the aggression I was looking for. I have removed them and gone back to the original baffles. Maybe i will try a modification of the quiet baffle this winter, but i didn't really like the sound. I just wanted to knock down the volume about 25% but i felt it changed the overall sound and volume too much.
November 30, 2015
2012 Harley Davidson Sportster Iron XL883N
Not to quiet
Baffles were easy to install. I removed some of the outer wrap to ease installation . The stock baffles in the twin slash pipes were a little bit loud so I tried the quiet baffles. The decibel level is good but the sound takes a little time to acquire a taste for.
October 20, 2015
1 year ago
2011 Harley Davidson Sportster Forty-Eight XL1200X
Hard to get baffle in the pipe
This baffle produced the sound I was looking for in my Heritage Softail. It was very difficult getting into the pipe due to the fiberglass wrapping. I would recommend you take your pipes off of the bike prior to installation.
July 6, 2015
Bang For The Buck
4 / 5
I can hear again
VBH1 is correct the baffle is not the one in the picture but it works. I could not imagine all the other reviews were correct on how hard the baffles are to change and I was right but not the way I wanted. These things are a royal pain in the rear to change. The fiberglass insulation wants to bunch up even when using wire like others suggested. I also had a tough time getting the original baffle out. If you watch the Vance & Hines video showing the baffle change out they make it look easy but these thing do not slide in and out of the mufflers at all. I had to beat the old baffles out and use a rubber mallet to get the new one back in. I do like the tone of the bike after the change it seems deeper and going down the highway the volume is not overwhelming as it was with the original baffles. I also noticed the bike ran better and did not backfire near as bad as it did with the original baffles. Overall I think this was a good choice because I could not hear with my Uclear due to the volume of the original baffles.
April 7, 2015
2015 Harley Davidson Sportster Custom XL1200C
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Browse 3 questions Browse 3 questions and 23 answers
Why did you choose this?
RevZilla Store
Read reviews of Quiet Baffles.
W O on Sep 23, 2016
Wanted to tone down the raw sound of the V&H 3" Slash Slip Ons. Saw the Revzilla review, researched on YouTube. Looks like the perfect solution.
William S on Jul 28, 2016
Read reviews of Quiet Baffles.
W O on Sep 23, 2016
reputation and basic slip on, however, a bit too loud and needed quiet baffles and sound is migrated and good
michael m on Sep 7, 2016
Wanted to tone down the raw sound of the V&H 3" Slash Slip Ons. Saw the Revzilla review, researched on YouTube. Looks like the perfect solution.
William S on Jul 28, 2016
I was looking to tone down the exhaust note on my Sportster, looked at this design to quiet things down and create more back pressure in my engine for better performance.
Jeff B on Jun 11, 2016
Because the standard baffles were too loud
Joshua H on May 30, 2016
I wanted to make my bike a little more condo friendly
nobatterybox on May 14, 2016
Sound and looks from nearest Harley Davidson store
bryan m on May 10, 2016
The original mufflers were too subdued. I wanted more of a Harley sound.
john k on Oct 14, 2015
I will still have friends in the neighborhood...
Motobergie on May 20, 2015
Why did I choose this ? One word : neighbors !
Julio C on May 18, 2015
Slip ons are a bit too loud, need to get along with my neighbors.
Richard C on Apr 19, 2015
Good reviews- might want to have less thunder.
Gilbert P on Feb 3, 2015
I love the look of the Vance & Hines 3" slip on's I bought, but they are very loud with the baffles that come in the kit. I bought these to quiet them down just a little and keep my neighbors as my friends.
tom c on Jan 2, 2015
I needed it quieter lol
bradley p on Oct 23, 2014
I took my stock baffles out because I wanted more sound and open exhaust is just too loud and didn't want to buy a full exhaust system for just a little more sound so these should be what I'm looking for I hope if not may end up buying slip ons.
james g on Jun 26, 2014
for the wifes bike and she wanted it a little quieter and it adds a little back pressure
brice h on Jun 6, 2014
I wanted to tone down the rappy sound of the Vance & Hines Twin Slash Staggered pipes.
Craig B on May 4, 2014
The Twin Slash Slip Ons are one way to go to get a Harley sound out of your bike without breaking the bank. However with the Standard baffles they are a little raspy. The Quiet Baffles are still plenty "Harley" loud, take out the Rasp that the Standard baffles have and make it a deeper tone. Just what the doctor ordered.
Jimmy W on Apr 25, 2014
Slip on mufflers are too loud by themselves even though they do sound good. Don't need to give the thieving state of California any more of my money with a noise ticket.
gene s on Apr 11, 2014
The baffles that came with the pipes are a little too loud and the sound is kind of "rappy."
John M on Apr 3, 2014
Use these inserts to make the Twin Slash a bit quieter. Just be sure to order (2). They are sold each, not as a pair.
TikiB on Dec 5, 2013
Stock baffles on the slash slip-ons were a little to loud. These are just right!
Donn W on Oct 28, 2013
reputation and basic slip on, however, a bit too loud and needed quiet baffles and sound is migrated and good
michael m on Sep 7, 2016
I was looking to tone down the exhaust note on my Sportster, looked at this design to quiet things down and create more back pressure in my engine for better performance.
Jeff B on Jun 11, 2016
Will these baffles fit the Python Mamba 3" pipes?
A shopper on May 9, 2016
Do these fit the Vance & Hines Twin Slash Staggered 2-into-2 Power Chamber exhaust system that is sold for the Yamaha bolt?
A shopper on Apr 26, 2014
BEST ANSWER: I would suggest that you call Vance and Hines for that information.