S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap
S&S Cycle 550-0666 | Mk45 TOURING MUFFLER for M8 TOURING MODELS—Black with Black Thruster End Cap

S&S Cycle Mk45 TOURING MUFFLER | 550-0666

$819.95
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S&S Cycle 550-0666

Mk45 Slip-On Mufflers are the result of decades of riding, racing and tuning. Combining both a stainless steel perforated core baffle with Race-TEX cartridge packing, they create a deep rumble and improved horsepower and torque, all while adding a unique look with styled aluminum end caps.

Fitment

  • 2017–Up M8 touring models

Features and Benefits

  • 4.5" design — with stainless steel perforated baffle and Race-TEX cartridge packing
  • Guardian Black muffler body finish
  • Tuxedo Black Thruster end cap
  • Produces a deep bass rumble throughout the RPM range
  • Removable dB reducer
  • Made in USA!

NOTE: Not recommended for Tri Glide® or other three wheel models including conversions due to ground clearance.

Install Instructions Download

FITMENT DISCLAIMER

Fitment information is provided as a general reference only and is not guaranteed for any motorcycle, whether stock or modified. Compatibility may vary by year, model, and individual configuration.

Customers are responsible for verifying fitment prior to purchase. House of Harley-Davidson assumes no liability for purchases made based on incorrect or unverified fitment information.

Please TEXT 414-282-2211 with any questions before ordering, or use the chat below.