Fits the following models: Swing Arm Bearing Kit Honda CRF250R 20, CRF250RX 20, CRF450R 19-20, CRF450RWE 19-20, CRF450RX 19-20 All Balls Swing Arm Bearing Kit Hands down, the most complete line of swing arm bearing & seal kits! Kit contains all of the components required to properly rebuild the swing arm bearing assembly. Needle bearing shafts are made with SCM415/42 bearing steel that has been hardened and precision ground. All metal bushings are case hardened and plated to prevent wear and corrosion. POM composite washer bearings replace thruneedle washers fincreased service life and superiresistance to water and dirt. Fits: Honda CRF250R 2020-2021 2023 CRF250RX 2020-2023 CRF450R 2019-2021 2023 CRF450RL 2023 CRF450RX 2019-2023 CRF450X 2023