Upgrade front-end control with the Race Tech Fork Spring, rated at 0.42 kg/mm and identified by manufacturer part number FRSP 444942. Designed for motorcycle suspension applications, this high-performance replacement spring helps establish more appropriate spring rates for improved handling, balance, and predictability. It is suitable for riders whose original equipment springs may be under-sprung for their weight or riding conditions.
Race Tech manufactures this fork spring from chrome silicon wire for a high stiffness-to-mass ratio and consistent performance. The spring is shot-peened and heat treated to support long-term durability, while its accurate rate helps maintain dependable suspension response. The design resists sacking-out, helping the spring retain its intended performance over time and repeated use.
This Race Tech 0.42 kg/mm fork spring fits select Yamaha and Suzuki motorcycles, including the 2014 and 2015 Yamaha YZ250F, 2014, 2015, and 2019 Yamaha YZ450F, 2019 Yamaha YZ250F, 2019 and 2020 Yamaha WR450F, 2021 Yamaha WR450F, and 2019 Suzuki RM-Z250. Verify model year, suspension specifications, and required spring rate before installation. Manufacturer part number: FRSP 444942. Vendor part number: 200-444942.
Features:
- Spring Rate: 0.42 kg/mm for tuned front-fork suspension performance
- Material: Chrome silicon wire for strength and consistent response
- Construction: Shot-peened and heat treated for enhanced durability
- Performance: High stiffness-to-mass ratio supports responsive handling
- Consistency: Accurate spring rate helps improve balance and predictability
- Durability: Designed to resist sacking-out during repeated use
- Fitment: Select 2014, 2015, 2019, 2020, and 2021 Yamaha YZ250F, YZ450F, and WR450F models, plus the 2019 Suzuki RM-Z250
- Brand: Race Tech
- Manufacturer Part Number: FRSP 444942
- Vendor Part Number: 200-444942
Fitment:
2014 Yamaha YZ250F
2014 Yamaha YZ450F
2015 Yamaha YZ250F
2015 Yamaha YZ450F
2016 Yamaha YZ250F
2016 Yamaha YZ450F
2017 Yamaha YZ250F
2017 Yamaha YZ450F
2018 Yamaha YZ250F
2018 Yamaha YZ450F
2019 Suzuki RM-Z250
2019 Yamaha WR450F
2019 Yamaha YZ250F
2019 Yamaha YZ450F
2019 Yamaha YZ450FX
2020 Kawasaki KX250F
2020 Suzuki RM-Z250
2020 Yamaha WR450F
2020 Yamaha YZ250F
2020 Yamaha YZ250FX
2020 Yamaha YZ450F
2020 Yamaha YZ450FX
2021 Kawasaki KX250F
2021 Kawasaki KX250X
2021 Suzuki RM-Z250
2021 Yamaha WR450F
2021 Yamaha YZ250F
2021 Yamaha YZ250FX
2021 Yamaha YZ450F
2021 Yamaha YZ450FX
2022 Kawasaki KX250F
2022 Kawasaki KX250X
2022 Kawasaki KX450SR
2022 Suzuki RM-Z250
2022 Yamaha WR450F
2022 Yamaha YZ125
2022 Yamaha YZ125X
2022 Yamaha YZ250
2022 Yamaha YZ250F
2022 Yamaha YZ250FX
2022 Yamaha YZ250X
2022 Yamaha YZ450F
2022 Yamaha YZ450FX
2023 Beta 125 RR (RE)
2023 Beta 200 RR (RE)
2023 Beta 350 RR (RE)
2023 Beta 390 RR (RE)
2023 Beta 480 RR (RE)
2023 Kawasaki KX250F
2023 Kawasaki KX250X
2023 Suzuki RM-Z250
2023 Yamaha WR450F
2023 Yamaha YZ125
2023 Yamaha YZ125X
2023 Yamaha YZ250
2023 Yamaha YZ250F
2023 Yamaha YZ250FX
2023 Yamaha YZ250X
2023 Yamaha YZ450F
2023 Yamaha YZ450FX
2024 Kawasaki KX250F
2024 Kawasaki KX250X
2024 Suzuki RM-Z250
2024 Yamaha WR450F
2024 Yamaha YZ125
2024 Yamaha YZ125X
2024 Yamaha YZ250
2024 Yamaha YZ250F
2024 Yamaha YZ250FX
2024 Yamaha YZ250X
2024 Yamaha YZ450F
2024 Yamaha YZ450FX