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$139.99
Everything you need in one package - retainer plate, dual spring sets, and hardware
One assembly adapts from mild street builds to high-horsepower machines with a simple spring swap
CNC-machined components ensure consistent performance
Lighter springs reduce hand fatigue on long rides, while heavy springs deliver confidence under hard acceleration
Complete hardware for secure, vibration-resistant installation
Optimized geometry provides consistent clamping force and heat dissipation under demanding conditions
Switch between spring sets to match your build — from comfortable street riding to maximum power transfer
Direct bolt-in replacement ensures proper alignment and eliminates guesswork
Visit Monsters on Machines eBay Store
One assembly adapts from mild street builds to high-horsepower machines with a simple spring swap
CNC-machined components ensure consistent performance
Lighter springs reduce hand fatigue on long rides, while heavy springs deliver confidence under hard acceleration
Complete hardware for secure, vibration-resistant installation
Optimized geometry provides consistent clamping force and heat dissipation under demanding conditions
Switch between spring sets to match your build — from comfortable street riding to maximum power transfer
Direct bolt-in replacement ensures proper alignment and eliminates guesswork
Check Out Monsters on Machines Stickers
Vintage-inspired monster machine decals, racing art, hot rod stickers, snowmobile graphics, and more.Visit Monsters on Machines eBay Store
| 2026 | Harley-Davidson | Street Glide Limited FLHXL | - | - |
| 2026 | Harley-Davidson | Road Glide Limited FLTRXL | - | - |
| 2025-2026 | Harley-Davidson | Softail Low Rider ST FXLRST | - | - |
| 2025-2026 | Harley-Davidson | FXBB Street Bob 117 | - | - |
| 2025-2026 | Harley-Davidson | Softail Low Rider S FXLRS | - | - |
| 2025-2026 | Harley-Davidson | Softail Heritage Classic FLHC | - | - |
| 2025-2026 | Harley-Davidson | FLHC Heritage Classic 117 | - | - |
| 2025-2026 | Harley-Davidson | FLFB Fat Boy 117 | - | - |
| 2025-2026 | Harley-Davidson | Softail Fat Boy FLFB | - | - |
| 2025 | Harley-Davidson | FLHXU Street Glide Ultra | - | - |
| 2025 | Harley-Davidson | Road Glide Custom FLTRX | - | - |
| 2025 | Harley-Davidson | Electra Glide Police FLHTP | - | - |
| 2025 | Harley-Davidson | Street Glide EFI FLHX | - | - |
| 2025 | Harley-Davidson | Softail Breakout FXBR | - | - |
| 2024-2026 | Harley-Davidson | Road Glide Police FLTRXP | - | - |
| 2024 | Harley-Davidson | FLI Hydra-Glide Revival | - | - |
| 2023-2026 | Harley-Davidson | FXBR Breakout 117 | - | - |
| 2023 | Harley-Davidson | FLHFB Electra Glide Highway King | - | - |
| 2022-2026 | Harley-Davidson | FXLRS Low Rider S 117 | - | - |
| 2022-2026 | Harley-Davidson | FXLRST Low Rider ST 117 | - | - |
| 2022-2023 | Harley-Davidson | FLHXST Street Glide ST | - | - |
| 2022-2023 | Harley-Davidson | FLTRXST Road Glide ST | - | - |
| 2022 , 2025-2026 | Harley-Davidson | Softail Street Bob FXBB | - | - |
| 2022 | Harley-Davidson | FXRST Low Rider El Diablo 117 | - | - |
| 2021-2024 | Harley-Davidson | FXBBS Street Bob 114 | - | - |
| 2021 | Harley-Davidson | FLH Electra Glide Revival | - | - |
| 2020-2024 | Harley-Davidson | FXST Softail Standard 107 | - | - |
| 2020-2024 | Harley-Davidson | FLTRK Road Glide Limited | - | - |
| 2020-2021 | Harley-Davidson | FXLRS Low Rider S 114 | - | - |
| 2019-2022 | Harley-Davidson | FLHT Electra Glide Standard | - | - |
| 2019-2020 | Harley-Davidson | FXDRS FXDR 114 | - | - |
| 2018-2024 | Harley-Davidson | FLHCS Heritage Classic 114 | - | - |
| 2018-2024 | Harley-Davidson | FLFBS Fat Boy 114 | - | - |
| 2018-2024 | Harley-Davidson | FLSB Sport Glide 107 | - | - |
| 2018-2023 | Harley-Davidson | FXFBS Fat Bob 114 | - | - |
| 2018-2021 | Harley-Davidson | FLHC Heritage Classic 107 | - | - |
| 2018-2021 | Harley-Davidson | FLSL Softail Slim 107 | - | - |
| 2018-2020 | Harley-Davidson | FXFB Fat Bob 107 | - | - |
| 2018-2020 | Harley-Davidson | FLFB Fat Boy 107 | - | - |
| 2018-2020 | Harley-Davidson | FLDE Deluxe 107 | - | - |
| 2018-2020 | Harley-Davidson | FXBB Street Bob 107 | - | - |
| 2018-2020 | Harley-Davidson | FXBRS Breakout 114 | - | - |
| 2018-2020 | Harley-Davidson | FXLR Low Rider 107 | - | - |
| 2018-2019 | Harley-Davidson | FXBR Breakout 107 | - | - |
| 2017-2026 | Harley-Davidson | FLHX Street Glide | - | - |
| 2017-2026 | Harley-Davidson | FLTRX Road Glide | - | - |
| 2017-2025 | Harley-Davidson | FLHRXS Road King Special | - | - |
| 2017-2025 | Harley-Davidson | Electra Glide Police FLHTPI | - | - |
| 2017-2025 | Harley-Davidson | Road King Police FLHP | - | - |
| 2017-2024 | Harley-Davidson | FLHTK Ultra Limited | - | - |
| 2017-2023 | Harley-Davidson | FLTRXS Road Glide Special | - | - |
| 2017-2023 | Harley-Davidson | FLHXS Street Glide Special | - | - |
| 2017-2022 | Harley-Davidson | FLHR Road King | - | - |
| 2017-2019 | Harley-Davidson | FLHTKL Ultra Limited Low | - | - |
| 2017-2019 | Harley-Davidson | FLHRC Road King Classic | - | - |
| 2017-2019 | Harley-Davidson | FLHTCU Electra Glide Ultra Classic | - | - |
| 2017-2019 | Harley-Davidson | FLTRU Road Glide Ultra | - | - |
| 2016 | Harley-Davidson | FXSE CVO Pro Street Breakout | - | - |
| 2015-2016 | Harley-Davidson | FLHXSE CVO Street Glide | - | - |
| 2015-2016 | Harley-Davidson | FLTRUSE CVO Road Glide Ultra | - | - |
| 2014-2016 | Harley-Davidson | FLHTKSE CVO Limited | - | - |
| 2014-2015 | Harley-Davidson | FLSTNSE CVO Softail Deluxe | - | - |
| 2014 | Harley-Davidson | FLHRSE6 CVO Road King | - | - |
| 2014 | Harley-Davidson | CVO Road King FLHRSE | - | - |
| 2013-2014 | Harley-Davidson | FXSBSE CVO Breakout | - | - |
| 2013 | Harley-Davidson | FLHTCUSE8 CVO Ultra Classic Electra Glide | - | - |
| 2013 | Harley-Davidson | FLTRXSE2 CVO Road Glide Custom | - | - |
| 2013 | Harley-Davidson | FLHRSE5 CVO Road King | - | - |
