VANCE AND HINES SKU: T14-611372

Vance and Hines Twin Slash Slip-Ons — 1991-2017 Harley-Davidson Dyna 91

$879.95
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NOT SURE ABOUT FITMENT?

Vance & Hines Twin Slash 3-inch slip-on mufflers for 1991-2017 Harley-Davidson Dyna 91 models, featuring PCX™ Technology with integrated chambered high-flow catalysts. These chrome or matte black slip-ons deliver improved torque across the powerband and a throaty exhaust note without requiring a complete exhaust system replacement.

Features

  • PCX™ (Power Chamber Exhaust) Technology with chambered high-flow catalysts
  • Twin Slash 3-inch cut tips
  • Full coverage heat shields
  • Available in chrome or matte black finish
  • Slip-on design bolts to stock headers

Specifications

  • Brand: Vance and Hines
  • Manufacturer Part #: 46337
  • Weight: 14.9 lb
  • Category: Exhaust, Mufflers & Tips / Motorcycle Slip-On
  • WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov

Fitment

Fits Harley-Davidson Dyna 91 models from 1991 through 2017 with stock header pipes.

Frequently Asked Questions

Do these slip-ons require new headers or a full exhaust system?

No — slip-ons bolt directly onto your stock headers in place of factory mufflers. Headers remain stock.

Will I need to tune my Dyna after installing these?

Slip-ons alone typically do not require remapping, but a fuel/air tune may optimize performance depending on other modifications.

What's the difference between chrome and matte black?

Both finishes deliver the same performance and PCX™ Technology — the choice is purely cosmetic preference.

Do these provide good heat protection?

Yes — full coverage heat shields are included to protect your legs and bike from exhaust heat.

Are these street legal?

These are designed for street use, but always check your local noise ordinances as regulations vary by region.

California Proposition 65 Warning

WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov

BRANDVance and Hines
TYPEMotorcycle Slip-On
SKUT14-611372
WEIGHT14.9 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.75
83 RATINGS
5★ 70
4★ 8
3★ 3
2★ 1
1★ 1
✓ VERIFIED
Sep 22, 2016

Exactly what i was looking for!!!!!

I love this product! I was looking for a solution for my 2016 Harley Davidson Low Rider S. I simply wanted to get the HD sound I was looking for from my stock 110 CI Screamin Eagle.<br /><br />I just picked up my bike from the dealer from my 1000 mile service and I posed the question to the service manager, "Do I need to tune my fuel system on my bike for the V & H Slip on Exhaust", and his answer was "NO".<br /><br />I installed the mufflers myself in an hour, hard part was getting the old ones to wiggle off.<br /><br />The mounting bracket supplied with the mufflers had to be slightly modified as the mounting hole was drilled to 1/2 " bolt, the HD stock bolt that must be reused is 5/8". So get out your drill and a uni-bit and drill out the bracket just a little to accommodate the 5/8" bolt.<br /><br />Runs great, sounds phenomenal, and turns heads!!!

— Scott S
✓ VERIFIED
Aug 16, 2016

This is exactly what the bike should have came with

These slip-ons are about 3-4" shorter than stock, are actual pipes/mufflers as compared to most stock Harley pipes. I have a 2016 FXDLS (Low Rider S) and these slip ons fit, except for one part. The mounting bracket bolt on my bike is 5/8" while the bracket supports a 1/2" bolt. So the only hiccup I had was to drill out a minor slot for my bike's original bolt to fit through the bracket. Otherwise, these are perfect. Although would definitely recommend the competition baffles for a throatier and more enjoyable ride.

— Philip S
✓ VERIFIED
Jan 21, 2016

Exactly the tone and noise level I was looking for!

This is my second set of slip-ons for my 2015 FXDWG. I tried a cheaper option which were little better than head pipe extensions and sounded like I was being chased by machine gun fire. These are far more robust and provide outstanding deep bass tone.<br /><br />Decibel for decibel, these are only slightly louder than the Screamin' Eagle option for the Dynas. I attribute that to the fact that the SEs are more mid-tone. Bass sound travels further than higher tones, so these do have a completely different (in my opinion, better) presence than the SEs. These are significantly louder than the stock horror that comes with the bike by a good 10-12 decibels. Stock runs around 75 dB, these are around 87 dB- 90 dB at idle based on my totally janky iPhone decibel meter. If that sounds like a bit much for you, I'd still recommend these, but pick up the quiet baffle option for them.<br /><br />These settle down nicely at speed, I can hear them, but they're certainly not overwhelming at all. For example you could easily hear a radio setup if you had such a thing on your bike. They have a lovely, deep roar when you spin up the throttle, then settle into a low rumble as you boogie along. A major advantage is that I can now easily tell where I am on my RPM curve, whereas with the stock pipes, I was constantly looking down at my gauge because I could barely hear the engine. As Harley pipes go, these are not terribly obnoxious, but people will definitely know you're around, which is exactly what I was looking for.<br /><br />Install was simple, which was good because the instructions were a bit lacking. Since I'd installed slip-ons before, this was very straight-forward. Just had to add a small metal adapter to the frame, then installed the heat shields to each muffler and on they went. They slipped right on to the head pipes without any issues. Total setup time was about 45 minutes after I got out all the tools. Much of that was wiggling off the old mufflers.<br /><br />I bought these with the intent of also picking up the V&H FP3 fuel tuner, but I thought I'd see how much decel pop I was going to get before putting out the moolah for a fuel controller. I had already had my EFI map flashed by the Harley dealership to a richer setting after I put on a heavy breather, but these guys are popping pretty bad on the hills. Unless that doesn't bug you, you'll need to either get a fuel controller of some stripe, or have your EFI reset at a shop. No big deal, as that's likely true for any after-market slip-ons.

— SteveTheBrewGuy S
✓ VERIFIED
Feb 10, 2014

Super Harley Sound

Chrome Vance and Hines 3" slip on exhaust sounds even better than I expected-- I could not be more thrilled with this product--- My Wide Glide no longer sounds like a sewing machine--Thanks

— olddog64 o
✓ VERIFIED
Jun 24, 2015

a must for your first upgrade.

I put these on at 600 miles. I wish I had left the dealership with them on. My 2014 Dyna Fat Bob went from sounding like a sewing machine to a real road beast. The perfect combination of throaty sound and throttle response. Installation was about an hour, most of which was fitting stock Harley clamps on. Plus they are about six inches shorter than stock pipes. Harley-Davidson should be ashamed that their stock bikes don't sound this good. I've already ordered the Vance and Hines VO2 Duke and cannot wait to see the difference. I would recommend these slipons to anyone as the quality is of the highest quality.

— SinSoaked S
✓ VERIFIED
May 19, 2014

Makes a Harley sound like a Harley!!!

This was an awesome buy! I wanted to make my 2014 Fat Bob, sound like a Harley, and these V and H slip-on didn't disappoint!!!! don't let the "slip-on" confuse you...they are MUCH LOUDER than stock! If you want a cost effective way of customizing your ride...go with these! Took me less than an hour to install, and I know nothing about "being a mechanic"!

— MJshoe M