S&S CYCLE Mufflers - Black - Black Tracer 550-0670

If you're running a Harley-Davidson Touring model and want measurable gains in horsepower and torque without sacrificing reliability, the S&S Cycle Mk45 mufflers deliver both performance and presence. The dual stainless steel baffle and RaceTEX packing create a deep, purposeful exhaust note that announces your machine without excessive drone. These are engineered components backed by decades of S&S racing experience—not bolt-on accessories with empty promises.

What sets the Mk45 apart is the balance: improved airflow for real power gains, styled aluminum endcaps that complement modern Touring aesthetics, and the flexibility to run with or without the included dB reducer depending on your riding situation. Made in the USA with precision construction, these mufflers are designed to last thousands of miles while maintaining their acoustic and performance character.

• 4.5" diameter muffler
• Stainless steel baffle
• RaceTEX cartridge packing
• Styled aluminum endcaps
• Removable dB reducer included
• Increased HP and torque
• Deep, tuned exhaust note
• Harley Touring fitment
• Bolt-on installation
• USA manufactured
• Not compatible with trikes
• MPN: 550-0670