The Race Tech Fork Spring 0.50 kg/mm is designed to improve front-end support, handling balance, and ride predictability on select Yamaha and Suzuki off-road motorcycles. Manufacturer part number FRSP 444950 and vendor part number 200-444950 identify this high-performance replacement spring for riders who need a properly matched fork rate.
Sportbikes and off-road motorcycles can be under-sprung for the rider and riding conditions, which may contribute to excessive fork dive, reduced stability, and inconsistent handling. This Race Tech spring uses chrome silicon wire with a high stiffness-to-mass ratio to provide accurate, dependable suspension performance. The spring is shot-peened and heat-treated for durability and resistance to fatigue, helping it maintain its intended rate over time.
Fitment includes the 2014 and 2015 Yamaha YZ250F, 2014 and 2015 Yamaha YZ450F, 2019 Yamaha YZ250F, 2019 Yamaha YZ450F, 2019 Suzuki RM-Z250, and 2019–2021 Yamaha WR450F. Verify the motorcycle model year and suspension specifications before installation. The 0.50 kg/mm rate should be selected based on rider weight, riding style, terrain, and the complete suspension setup.
Race Tech is known for precision suspension components engineered for serious performance applications. This fork spring delivers accurate spring rates, high material quality, and resistance to “sacking out,” making it a dependable choice for tuning motorcycle suspension and achieving more controlled, predictable fork response.
Features:
- Spring rate: 0.50 kg/mm for targeted fork suspension tuning
- Brand: Race Tech
- Manufacturer part number: FRSP 444950
- Vendor part number: 200-444950
- Constructed from high-quality chrome silicon wire
- High stiffness-to-mass ratio for responsive suspension performance
- Shot-peened and heat-treated for long-term durability
- Accurate spring rate to support predictable handling
- Designed to resist sacking out during continued use
- Fits select 2014–2021 Yamaha YZ250F, YZ450F, WR450F, and 2019 Suzuki RM-Z250 models
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