Fits: Softail 2018-2026
Converts dual damper rod forks to gas-charged monotube cartridges to improve front-end stability, resistance to brake dive, and bottoming control. No fork modifications required.
Monotube Fork Cartridge Kits upgrade dual damper rod forks to high-performance cartridge damping, delivering smoother handling and better control.
Sold as a complete kit; professional installation recommended.
| Model | Years |
|---|---|
| Harley Davidson | |
| FLDE 1750 ABS (Softail Deluxe 107) | 2018–2020 |
| FLFB 1750 ABS (Softail Fat Boy 107) | 2018–2020 |
| FLFBS 1868 ABS (Softail Fat Boy 114) | 2019–2024 |
| FLFBS 1868 ABS (Softail Fat Boy Anniversary (ANX) 114) | 2018 |
| FLFBS 1923 ABS (Softail Fat Boy 117) | 2025–2026 |
| FLHC 1750 ABS (Softail Heritage Classic 107) | 2018–2022 |
| FLHCS 1868 ABS (Softail Heritage Classic 114) | 2019–2024 |
| FLHCS 1868 ABS (Softail Heritage Classic Anniversary 114) | 2018 |
| FLHCS 1923 ABS (Softail Heritage Classic 117) | 2025 |
| FLHCS 1923 ABS (Softail Heritage Classic Solo 117) | 2026 |
| FLI 1868 ABS (Hydra-Glide Revival 114) | 2024 |
| FLSL 1750 ABS (Softail Slim 107) | 2018–2021 |
| FLSTFI 1923 ABS (Softail Fat Boy Gray Ghost 117) | 2025 |
| FXBB 1750 ABS (Softail Street Bob 107) | 2018–2020 |
| FXBB 1923 ABS (Softail Street Bob 117) | 2025 |
| FXBBS 1868 (Softail Street Bob 114) | 2021 |
| FXBBS 1868 ABS (Softail Street Bob 114) | 2021–2024 |
| FXBR 1750 ABS (Softail Breakout 107) | 2018–2020 |
| FXBR 1923 ABS (Softail Breakout 117) | 2023–2026 |
| FXBRS 1868 ABS (Softail Breakout 114) | 2019–2022 |
| FXBRS 1868 ABS (Softail Breakout Anniversary (ANX) 114) | 2018 |
| FXLR 1750 ABS (Softail Low Rider 107) | 2018–2020 |
| FXST 1750 (Softail Standard) | 2021 |
| FXST 1750 ABS (Softail Standard) | 2020–2024 |
| Manufacturer part number | 31-4008 |
|---|
This product fits the following vehicles. Use the filters below to narrow down the list if needed.
| Manufacturer | Model | Family | Year | Notes |
|---|---|---|---|---|
| Harley Davidson | Softail Deluxe 107 | Softail | 2018 | |
| Harley Davidson | Softail Deluxe 107 | Softail | 2019 | |
| Harley Davidson | Softail Deluxe 107 | Softail | 2020 | |
| Harley Davidson | Softail Fat Boy 107 | Softail | 2018 | |
| Harley Davidson | Softail Fat Boy 107 | Softail | 2019 | |
| Harley Davidson | Softail Fat Boy 107 | Softail | 2020 | |
| Harley Davidson | Softail Fat Boy Anniversary (ANX) 114 | Softail | 2018 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2019 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2020 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2021 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2022 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2023 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2024 | |
| Harley Davidson | Softail Fat Boy 117 | Softail | 2025 | |
| Harley Davidson | Softail Fat Boy 117 | Softail | 2026 | |
| Harley Davidson | Softail Heritage Classic 107 | Softail | 2018 | |
| Harley Davidson | Softail Heritage Classic 107 | Softail | 2019 | |
| Harley Davidson | Softail Heritage Classic 107 | Softail | 2020 | |
| Harley Davidson | Softail Heritage Classic 107 | Softail | 2021 | |
| Harley Davidson | Softail Heritage Classic 107 | Softail | 2022 | |
| Harley Davidson | Softail Heritage Classic Anniversary 114 | Softail | 2018 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2019 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2020 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2021 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2022 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2023 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2024 | |
| Harley Davidson | Softail Heritage Classic 117 | Softail | 2025 | |
| Harley Davidson | Softail Heritage Classic Solo 117 | Softail | 2026 | |
| Harley Davidson | Hydra-Glide Revival 114 | Softail | 2024 | |
| Harley Davidson | Softail Slim 107 | Softail | 2018 | |
| Harley Davidson | Softail Slim 107 | Softail | 2019 | |
| Harley Davidson | Softail Slim 107 | Softail | 2020 | |
| Harley Davidson | Softail Slim 107 | Softail | 2021 | |
| Harley Davidson | Softail Fat Boy Gray Ghost 117 | Softail | 2025 | |
| Harley Davidson | Softail Street Bob 107 | Softail | 2018 | |
| Harley Davidson | Softail Street Bob 107 | Softail | 2019 | |
| Harley Davidson | Softail Street Bob 107 | Softail | 2020 | |
| Harley Davidson | Softail Street Bob 117 | Softail | 2025 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2021 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2021 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2022 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2023 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2024 | |
| Harley Davidson | Softail Breakout 107 | Softail | 2018 | |
| Harley Davidson | Softail Breakout 107 | Softail | 2019 | |
| Harley Davidson | Softail Breakout 107 | Softail | 2020 | |
| Harley Davidson | Softail Breakout 117 | Softail | 2023 | |
| Harley Davidson | Softail Breakout 117 | Softail | 2024 | |
| Harley Davidson | Softail Breakout 117 | Softail | 2025 | |
| Harley Davidson | Softail Breakout 117 | Softail | 2026 | |
| Harley Davidson | Softail Breakout Anniversary (ANX) 114 | Softail | 2018 | |
| Harley Davidson | Softail Breakout 114 | Softail | 2019 | |
| Harley Davidson | Softail Breakout 114 | Softail | 2020 | |
| Harley Davidson | Softail Breakout 114 | Softail | 2021 | |
| Harley Davidson | Softail Breakout 114 | Softail | 2022 | |
| Harley Davidson | Softail Low Rider 107 | Softail | 2018 | |
| Harley Davidson | Softail Low Rider 107 | Softail | 2019 | |
| Harley Davidson | Softail Low Rider 107 | Softail | 2020 | |
| Harley Davidson | Softail Standard | Softail | 2021 | |
| Harley Davidson | Softail Standard | Softail | 2020 | |
| Harley Davidson | Softail Standard | Softail | 2021 | |
| Harley Davidson | Softail Standard | Softail | 2022 | |
| Harley Davidson | Softail Standard | Softail | 2023 | |
| Harley Davidson | Softail Standard | Softail | 2024 |
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