Bolt's 4-Stroke Pro-Packs for Honda CRF250/450 have everything you need for these late model CRFs in an organized container. Includes a placement guide to ensure proper fitment. Contains bodywork fasteners, bushings, O-rings for oil change, sprocket bolts, rotor bolts, thread chasers and O.E.M. style fasteners in the sizes riders need. Pro-Pack for Honda CRF 250 and CRF 450 models (2021-current). Bolt fasteners are the same spec bolts as the factory.