Mk45 Mufflers

4.5" Slip-On Mufflers For 95-16 Twin Cam and 2017 M8 Touring Models 

4.5" Slip-On Mufflers are the result of decades of riding, racing and tuning. Combining both a stainless steel perforated core baffle with RaceTEX cartridge packing, they create a deep rumble and improved horsepower and torque, all while adding a unique look with styled aluminum end caps.

FITMENT

  • Late Model Touring Applications

FEATURES AND BENEFITS

  • 7 horsepower gain*
  • Stainless steel baffle with RaceTEX cartridge packing
  • Mufflers offered in show quality chrome or Jet-Hot® black ceramic finishes
  • Ceramic black coating comes with a lifetime warranty
  • Two end cap styles - Thruster or Tracer
  • Removable dB Reducer (J2825 compliant)
  • *Tested with S&S Power Tune Dual Header and Stealth Air Cleaner Kit




*Qualified manufacturer declared U.S. 50-State legal 
emissions replacement part on all 2017 FL Touring models.

2017 Touring Models

550-0670

Black Contrast Tracer End Cap - Ceramic Black Body

550-0671

Chrome Tracer End Cap - Ceramic Black Body

550-0668

Black Contrast Tracer End Cap - Chrome Body 

550-0669

Chrome Tracer End Cap - Chrome Body


550-0666

Black Contrast Thruster End Cap - Ceramic Black Body

550-0667

Chrome Thruster End Cap - Ceramic Black Body

550-0664

Black Contrast Thruster End Cap - Chrome Body

550-0665

Chrome Thruster End Cap - Chrome Body

1995-2016 Touring Models

550-0625

Black Contrast Tracer End Cap - Ceramic Black Body

550-0626

Chrome Tracer End Cap - Ceramic Black Body

550-0623

Black Contrast Tracer End Cap - Chrome Body

550-0624

Chrome Tracer End Cap - Chrome Body

550-0621

Black Contrast Thruster End Cap - Ceramic Black Body

550-0622

Chrome Thruster End Cap - Ceramic Black Body

550-0619

Black Contrast Thruster End Cap - Chrome Body

550-0624

Chrome Thruster End Cap - Chrome Body