Description
If you’re running a Harley-Davidson touring rig and want to shed excess weight while unlocking measurable gains in horsepower and torque, the S&S Cycle Mk45 Thruster mufflers deliver serious performance without compromising sound quality. These aren’t just pipes—they’re engineered exhausts that combine a stainless steel baffle with RaceTEX packing to produce a deep, commanding rumble that matches your bike’s power output. The removable dB reducer gives you tuning flexibility, while the styled aluminum endcaps add visual presence that justifies the engineering underneath.
- 4.5″ touring muffler
- Stainless steel baffle
- RaceTEX cartridge packing
- Increases horsepower/torque
- Removable dB reducer
- Styled aluminum endcaps
- Chrome and black finish
- Bolt-on installation
- Made in USA
- Not for trikes
- MPN: 550-0664







