S&S Cycle 4-1/2 Inch MK45 Performance Slip-On Mufflers for 2017-2024 Harley-Davidson Touring
Touring riders who want a deeper, more authoritative exhaust note without surrendering street legality need a muffler that meets both demands without compromise. The S&S MK45 slip-ons deliver a deep throaty tone from a multi-layered acoustic packing system that stays consistent for the life of the muffler, and the lava chrome finish brings a distinctive look that stands apart from the standard chrome or blacked-out options on the market.
Key Features
- 4-1/2 inch OD body with lava chrome finish – reflective and durable, easier to clean than traditional chrome
- RaceTEX cartridge packing with multi-layered acoustic material for consistent sound over the muffler’s lifetime
- Stainless steel baffle for long-term corrosion resistance
- Removable dB reducer is SAE J2825 compliant for tunable sound
- 50-State legal
- Made in the USA by S&S Cycle
Technical Specifications
- Diameter: 4-1/2 inches OD
- Finish: Lava chrome
- Baffle: Stainless steel
- Packing: RaceTEX cartridge with multi-layered acoustic material
- Sound: Removable dB reducer, SAE J2825 compliant
- Emissions: 50-State legal
- Fitment: 2017-2024 Harley-Davidson FL Touring models
- Quantity: Sold as a pair
- Origin: Made in USA
Fitment Notes
- Fits 2017-2024 Harley-Davidson FL Touring models (Road King, Street Glide, Road Glide, Electra Glide, etc.)
- Sold as a pair – both left and right mufflers included
- 50-State legal for all street use
- Review the Fitment tab for the complete year and model breakdown








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