The Koso Oil Catch Can is a beautifully crafted unit to catch the blowout that escapes your crankcase, especially if your engine is being pushed hard or you're going WOT for extended periods. Depending on your setup, you could be losing EXCESSIVE amounts of oil. This unit will take care of this concern by catching all the oil that's coming out, then sending back through an oil dipstick port. Not only do you protect your engine by saving your oil, but you're also catching it all before it can spray all over your bike, we've seen this get really messy, and it's a pain to see when you've spent lots of time on it. As a bonus, you're doing the environment a bit of good by not spreading the oil everywhere and cleaning up after yourself! The Koso unit is easy to install and will do all kinds of good, so get one today!!