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S&S CYCLE Mufflers - Black - Black Thruster 550-0666

Part Number: 18011077
S&S CYCLE
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SKU:
18011077
MPN:
550-0666
Condition:
New
Availability:
Ships Same Business Day
Weight:
30.40 LBS
On Sale
MSRP: $819.95
Now: $737.96
Was: $819.95
— You save $81.99
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Description

If you're running a touring setup and want genuine performance gains without sacrificing ride quality, the S&S Cycle Mk45 mufflers deliver measurable improvements in horsepower and torque while maintaining the deep, aggressive exhaust note serious riders expect. Built from decades of race-proven engineering, these American-made mufflers combine dual-stage filtration—stainless steel baffles paired with RaceTEX packing—to optimize scavenging and flow. The removable dB reducer gives you control over sound levels for different riding conditions, while the styled aluminum endcaps add visual presence that matches the performance underneath.

  • 4.5" diameter tubing
  • Stainless steel baffles
  • RaceTEX cartridge packing
  • Styled aluminum endcaps
  • Removable dB reducer
  • Improved horsepower/torque
  • Deep rumble tone
  • Bolt-on installation
  • Made in USA
  • Touring application fitment
  • Not for trikes
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