Bolt Hardware Pro Pack Yamaha Yz125 / X / Yz250 / X The Bolt Yamaha Pro-Pack contains factory style hardware so you can keep riding even when you forget to tighten a few nuts and bolts. This Pro-Pack includes all metric style hardware and was designed specifically for off-road Yamaha models in the Yz-F, Wr-F, Yz-Fx family. Includes: Bodywork fasteners Oil filter cover o-rings Strainer o-rings Counter shaft lock washers Dzus eliminator system Aluminum bushings Rotor bolts Full set of sprocket bolts Chain adjuster bolts T-nuts Fuji lock nuts Thread chasers Drain plug washers