Features the light weight of an alloy with the protection of a hardened steel shell providing a superior wear surface for longer wheel spacer and bearing life Complete and direct replacement for the OEM parts - Kawasaki KX 450 F (2020, 2021, 2019, 2022); Kawasaki KX 250 X (2023, 2025, 2022, 2021, 2024); Kawasaki KX 450 X (2021, 2022, 2024, 2025, 2023); Kawasaki KX 450 (2025, 2023, 2024)