S&S CYCLE Mufflers - Chrome - Chrome Thruster 550-0665

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