Wiseco Piston Ring Set | 3.937" | 4-Stroke (3937VMF)
- Replacement ring set for pistons
- Wiseco rings fit only Wiseco pistons.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2018-2019 | Harley-Davidson | Breakout FXBR 107 | |
| 2018-2020 | Harley-Davidson | Deluxe FLDE 107 | |
| 2019-2021 | Harley-Davidson | Electra Glide Standard FLHT | |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU | |
| 2018-2019 | Harley-Davidson | Fat Bob FXFB 107 | |
| 2018-2019 | Harley-Davidson | Fat Boy FLFB 107 | |
| 2017-2018 | Harley-Davidson | Freewheeler FLRT | |
| 2018-2021 | Harley-Davidson | Heritage Classic FLHC 107 | |
| 2018-2020 | Harley-Davidson | Low Rider FXLR 107 | |
| 2017-2023 | Harley-Davidson | Road Glide FLTRX | |
| 2017-2018 | Harley-Davidson | Road Glide Special FLTRXS | |
| 2017-2018 | Harley-Davidson | Road Glide Ultra FLTRU | |
| 2017-2021 | Harley-Davidson | Road King FLHR | |
| 2017-2019 | Harley-Davidson | Road King Special FLHRXS | |
| 2018-2021 | Harley-Davidson | Softail Slim FLSL 107 | |
| 2020-2023 | Harley-Davidson | Softail Standard FXST 107 | |
| 2018-2021 | Harley-Davidson | Sport Glide FLSB 107 | |
| 2018-2020 | Harley-Davidson | Street Bob FXBB 107 | |
| 2017-2023 | Harley-Davidson | Street Glide FLHX | |
| 2017-2018 | Harley-Davidson | Street Glide Special FLHXS | |
| 2017-2018 | Harley-Davidson | Tri Glide Ultra FLHTCUTG | |
| 2017-2018 | Harley-Davidson | Ultra Limited FLHTK | |
| 2017-2018 | Harley-Davidson | Ultra Limited Low FLHTKL | |