GIDIBII Automatic Chain Oiler Universal Motorcycle Lubrication System Aluminum Constructure 

Chain Oiler is an on-board, on-demand chain oiling system.
You lube your chain only when it's needed, which means you control the process.
With this Chain Oiler there's no requirement to run a vacuum tube from the carb or fuel injectors to the reservoir, and there's no complicated electrical connections.
Your chain and sprockets will last very long when they're properly lubed.
Universal For Chain Drive Motorcycles.