- Features full 2" left side crossover and 4-1/2" muffler bodies with 2" inlets
- All M8 systems feature: 1-3/4" to 1-7/8" to 2" high-flow 16-gauge three stepped primary headers
- Enlarged interconnected headers make for improved horsepower and low-end torque
- 2-1/2", 220° 16-gauge heat shields
- Baffles are wrapped in stainless steel wool and high-temp fiberglass for a rich mellow tone
- Heavy-duty AccuSeal® reaction-block header-to-muffler clamps included
- 18 mm and 12 mm O2 bungs welded into the primaries
- Optional inserts boost low-end performance (available separately)
- Made in the USA
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2017-2021 | Harley-Davidson | CVO Limited FLHTKSE | |
| 2018-2024 | Harley-Davidson | CVO Road Glide FLTRXSE | |
| 2024 | Harley-Davidson | CVO Road Glide FLTRXSTSE ST | |
| 2022-2023 | Harley-Davidson | CVO Road Glide Limited FLTRKSE | |
| 2023 | Harley-Davidson | Electra Glide Highway King FLHFB | |
| 2019-2022 | Harley-Davidson | Electra Glide Standard FLHT | |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU | |
| 2017-2024 | Harley-Davidson | Road Glide FLTRX | |
| 2020-2024 | Harley-Davidson | Road Glide Limited FLTRK | |
| 2017-2023 | Harley-Davidson | Road Glide Special FLTRXS | |
| 2022-2023 | Harley-Davidson | Road Glide ST FLTRXST | |
| 2017-2019 | Harley-Davidson | Road Glide Ultra FLTRU | |
| 2017-2022 | Harley-Davidson | Road King FLHR | |
| 2017-2024 | Harley-Davidson | Road King Special FLHRXS | |
| 2017-2024 | Harley-Davidson | Street Glide CVO FLHXSE | |
| 2017-2024 | Harley-Davidson | Street Glide FLHX | |
| 2017-2023 | Harley-Davidson | Street Glide Special FLHXS | |
| 2022-2023 | Harley-Davidson | Street Glide ST FLHXST | |
| 2017-2024 | Harley-Davidson | Ultra Limited FLHTK | |
| 2017-2019 | Harley-Davidson | Ultra Limited Low FLHTKL | |