The Bolt Hardware Engine Fastener Kit - Honda CRF450X 2019-21, CRF450L 2019-21 is part of the latest performance motocross, enduro and quad hardware range from Bolt.Engine Fastener Kits come with modern dimpled flange bolts. With a bright zinc finish, these fasteners last long and give a clean, updated look to any engine.Four-Stroke Engine Fastener kits include bottom-end hardware for the following: Crankcase Covers, Clutch Cover, Oil Filter Cover, Crankcase, Case Saver, Water Pump and various top-end bolts depending on modelManufacturer part number: E-CFX4-1920 View all Bolt Hardware. View all Bolt kits.