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S&S Cycle - Mk45 Mufflers Chrome w/ Chrome Thruster End Caps M8

2017 FL Models
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  • S&S Mk45 mufflers are the result of decades of development by S&S Cycle 
  • Large 4.5" muffler body
  • Billet end caps
  • Multi-layered acoustic packing provides consistent sound for the life of the muffler
  • Excellent performance on stock or highly modified engines
  • Simple to install
  • Sold in pairs
  • Made in the U.S.A.

Product Series

Application List

Fitment for 550-0665


  • 550-0665
  • 550-0665
  • S&S Cycle
  • New


Shipping Information

  • Item Requires Shipping
  • 27.0 lbs.
  • W10.0000” x H7.0000” x L32.0000”