Bolt Motorcycle Hardware'sTwo-Stroke Engine Fastener kits have all the external fasteners from top to bottom-end including hardware for: Heads Reeds Cylinder Crankcase Saver Water Pump Case Covers Ignition Cover Clutch Cover Does not include engine-to-frame mount bolts.This kit fits the following models: YZ250 1990-2020 YZ250X 2016-2019 Fits: Yamaha YZ250 1990-1996 1998-2008 2011-2015 2017-2021 YZ250X 2016-2017 2019-2021