This steering stem pressure ball bearing kit is designed for use with CBR600 F, F3, F4i, FR, FS, F4, F2, and GL1800B motorcycles.The set includes components corresponding to part numbers 91015-KT8-005 and 91016-KT8-005.These bearings serve as a direct replacement to restore the steering function of the vehicle.Installation involves removing the old bearings and pressing in the units according to standard motorcycle maintenance procedures.This product is compatible with the listed models and part numbers and is not affiliated with or endorsed by the manufacturer.