Abstract: A lubricating chainguard for motorcycles and similar vehicles is disclosed wherein a front or transmission-sprocket housing and a spaced rear or driven-sprocket housing are interconnected by a rigid hose or pipe assembly to form a completely enclosed guard through which a chain can pass freely while being immersed, at least in part, in an enclosed body of lubricating oil or grease thereby to maintain the said chain in continuously lubricated condition during operation of the motorcycle.