Description
The S&S Cycle Mk45 Thruster mufflers deliver the deep, aggressive exhaust note that defines authentic cruiser presence—while actually improving horsepower and torque output. Unlike cosmetic exhaust upgrades, these dual-construction mufflers combine a stainless steel baffle with RaceTEX cartridge packing to control sound without sacrificing performance. Their styled aluminum endcaps add genuine visual impact without the hollow promises of bolt-on aesthetics.
Built by S&S Cycle—a manufacturer with decades of real-world riding and racing validation—these mufflers are engineered for riders who demand both function and form. The removable dB reducer gives you control over sound levels, making them street-legal or track-ready depending on your needs. Made in the USA with no compromise on materials or construction.
- 4.5″ diameter touring mufflers
- Stainless steel baffle construction
- RaceTEX cartridge packing
- Styled aluminum endcaps
- Chrome finish
- Removable dB reducer included
- Improves horsepower and torque
- Deep, aggressive exhaust tone
- Bolt-on installation
- Made in USA
- Not compatible with trikes
- MPN: 550-0665
