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S&S 4.5" MK45 Thruster Slip-On Mufflers For Harley Touring

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This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

S&S 4 1/2" MK 45 Thruster Slip On Mufflers For Harley Touring

The S&S Cycles Power Tune Performance Exhaust mufflers are the result of decades of riding, racing and tuning. Combining both a stainless steel perforated core baffle and RaceTEX cartridge packing, these 4 1/2" diameter muffler bodies create a deep, performance tone and result in improved horsepower. 


  • Fitted with billet end caps
  • Multi-layered acoustic packing
  • 7 horsepower gain with S&S headers and Stealth air cleaner
  • Removable baffle
  • Simple to install
  • Sold in pairs
  • Made in the USA
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