This chain was pretty dirty! In this video I explain how to clean and lube your motorcycle chain. I do it on my sport bike, 2013 gsxr 1000 commemorative edition. However this process is universal to any type of bike with a chain. I like to clean every 500 miles and clean and lube every 1000 miles. So you can do this on your dirt bike too. I am no mechanic, just a normal guy working on bikes. Let me know if you have any questions.