VANCE AND HINES SKU: T14-640662

Vance and Hines Backslash 450 Matte Black Slip-On Mufflers - Harley Milwaukee-Eight Touring

$449.96
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About Vance and Hines

Vance & Hines has been building motorcycle exhaust since 1979 and has run factory-backed drag and King of the Baggers programs that feed straight back into its street products. Systems like the Torquer and the 2-into-1 designs are engineered around real dyno work, not just sound — which is why they show up on so many tuned Milwaukee-Eight and Twin Cam builds.

Upgrade your Harley-Davidson Milwaukee-Eight Touring model with Vance & Hines Backslash 450 slip-on mufflers. Engineered for a perfect alignment with stretched saddlebag cutouts, these mufflers deliver a deep, satisfying rumble through their patent-pending LS275 baffle.

Why riders pick this

  • Deep, powerful sound from LS275 baffle
  • Flush fit with stretched saddlebag cutouts
  • Sleek matte black finish
  • 50-state emissions compliant
  • Easy bolt-on installation to stock headers

These 4.5-inch round mufflers are designed to sit flush with your stretched saddlebags, providing a clean, integrated look that enhances the aggressive stance of your bagger. Beyond aesthetics, the Backslash 450 slip-ons meet 50-state emissions standards, ensuring compliance without compromising on sound or performance.

Optimized Sound and Fitment

  • Patent-pending LS275 baffle for a deep, resonant sound and improved power
  • 4.5-inch round mufflers designed to align flush with stretched saddlebag cutouts
  • Striking matte black finish for a stealthy, custom appearance
  • 50-state emissions-compliant for broad legality
  • Simple slip-on design bolts directly to stock headers

Seamless Integration for Touring Baggers

The Backslash 450 slip-ons are an ideal upgrade for any Milwaukee-Eight Touring rider looking to enhance their bike's exhaust note and visual appeal. While slip-ons typically don't necessitate a fuel tuner, a fuel management modification can further optimize performance, especially if you plan on additional engine upgrades. These mufflers provide an instant, noticeable improvement in both sound and style.

Specifications

  • Brand: Vance and Hines
  • Manufacturer Part #: 46764
  • Muffler Diameter: 4.5 inch
  • Finish: Matte black
  • Weight: 27.7 lb
  • Emissions: 50-state compliant

Common questions

Will these slip-ons sit flush with my stretched saddlebags?

Yes, the Vance & Hines Backslash 450 mufflers are specifically designed with a 4.5-inch diameter and rear angle to align perfectly flush with stretched saddlebag cutouts on Harley-Davidson Touring baggers.

Do I need a fuel tuner with these slip-on mufflers?

Slip-on mufflers alone typically do not require a full ECU remapping. However, for optimal performance and to unlock the full potential of your Milwaukee-Eight engine, a fuel management module is recommended, especially if combined with other performance upgrades.

Are these slip-ons legal in all states?

Yes, these Vance & Hines Backslash 450 slip-on mufflers are 50-state emissions-compliant, meaning they meet legal requirements across the entire United States.

Ordering from Vtwinbikers

  • Brand new, sourced through authorized US distribution — never used, never grey-market.
  • Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
  • Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
BRANDVance and Hines
TYPEMotorcycle Slip-On
SKUT14-640662
WEIGHT27.7 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.5
2 RATINGS
5★ 1
4★ 1
3★ 0
2★ 0
1★ 0
✓ VERIFIED
Jan 29, 2026

Vance & Hines

Good fit, great sound and easy install.

— OMAR M
✓ VERIFIED
Apr 25, 2026

Great pipes

Great Pipes! I wish they were just a little deeper sounding,but I love the appearance and sound.

— Ivory B