S&S Dual 4.5" Chrome MK45 Cutlass Performance Mufflers (550-1011)
- MK45 performance mufflers feature a bold 4.5" OD diameter with new gloss black Cutlass end cap design
- Stainless steel baffles with RaceTEX packing
- Produces a deep bass rumble throughout the RPM range
- 34" Length
- 7 horsepower gain
- 50-state legal
- Removable dB reducer
- Made in the U.S.A.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2019-2022 | Harley-Davidson | Electra Glide Standard FLHT | |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU | |
| 2017-2021 | Harley-Davidson | Road Glide FLTRX | |
| 2020-2023 | Harley-Davidson | Road Glide Limited FLTRK | |
| 2017-2021 | Harley-Davidson | Road Glide Special FLTRXS | |
| 2017-2019 | Harley-Davidson | Road Glide Ultra FLTRU | |
| 2017-2022 | Harley-Davidson | Road King FLHR | |
| 2017-2023 | Harley-Davidson | Road King Special FLHRXS | |
| 2017-2023 | Harley-Davidson | Street Glide FLHX | |
| 2017-2023 | Harley-Davidson | Street Glide Special FLHXS | |
| 2022-2023 | Harley-Davidson | Street Glide ST FLHXST | |
| 2017-2023 | Harley-Davidson | Ultra Limited FLHTK | |
| 2017-2019 | Harley-Davidson | Ultra Limited Low FLHTKL | |