coped steel bungs are 3/4" diameter and are drilled and tapped all the way through with 5/16"-18 thread

as well as the 1-3/4"

It is a copy of the old single cable Amal style throttle

These pushrods replace the stock steel rods and still retain the hydraulic lifters

Important: If you are running a 5

Heavy Duty Gear Guard 85w-140 Transmission/Gearbox Oil - 1 qt. Bottle Vendor_Mullins Chain Drive coped steel bungs are 3/4"Spectro Heavy Duty Gear Oil is a premium quality lubricant formulated specifically to run in motorcycle transmissions to prevent rust, corrosion, oxidation and to combat foaming and gear pitting. Formulated specifically for Big Twin Transmissions and dyed red, it reduces drag, friction losses, wear, and extends gear life. GL 5 rated. 1 quart bottle.