S&S Dual Stainless Steel Chrome Grand National Slip-On Mufflers (550-0755B)
- Improved horsepower and torque (when used with a Stealth Air cleaner kit; sold separately)
- Race-inspired design
- Removable dB reducer for back pressure and sound tuning
- Meet J2825 levels for sound
- All hardware included
- Deep-performance rumble replaces stock whisper tone
- No mapping required
- Sold in pairs
- Made in the U.S.A.
- Exempt per CARB Executive Order (E.O.) #K-010-16 for 18-20 models listed.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2018-2019 | Harley-Davidson | Breakout FXBR 107 | |
| 2018-2020 | Harley-Davidson | Breakout FXBRS 114 | |
| 2018-2019 | Harley-Davidson | Fat Boy FLFB 107 | |
| 2018-2020 | Harley-Davidson | Fat Boy FLFBS 114 | |
| 2018-2020 | Harley-Davidson | Low Rider FXLR 107 | |
| 2020 | Harley-Davidson | Low Rider S FXLRS 114 | |
| 2018-2021 | Harley-Davidson | Softail Slim FLSL 107 | |
| 2020-2022 | Harley-Davidson | Softail Standard FXST 107 | |
| 2018-2020 | Harley-Davidson | Street Bob FXBB 107 | |