This is pretty cool, but has been around for a while. Mike Williamson told us that when Kawi first came out with their 450, the factory guys put in as large a clutch as possible. That meant there wasn't much gap between the outer diameter and the cases, and oil fill was slow. To help speed it up, they wanted something they could pour oil into, and let it feed in on its own. They took an oil cap, machined off the top, and constructed a tube. Pretty slick.