It's my first bike and I've been lurking here for while. The bike is already fast enough (if not too fast) so my goal is not to make it any faster, just to run like it's new. It's an '05. I bought a Scotts Oil filter, but I just changed the oil with a paper filter so I'm gonna ride it a couple more times before I change the oil to install the new filter. I bought a Regina ORN6 chain yesterday, but I'm at a loss which is the best sprockets to buy. I like the Renthal twinring (sounds like a good idea) but they're kinda pricey, what do you all think? The bike is bone stock and the original sprockets look fine to me but everyone says to replace them as a set. I don't mind spending the money but I wanna get the most durable ones. Also, what's the best tool to use to get that darned master clip off? I wanna be able to reuse it for a spare if I need to. I'm also thinking about getting some radiator guard/braces, any ideas? Any other tips would be greatly appreciated. I don't race and don't intend to in the near future. I ride in Hawaii right now, mostly trail riding. So raceability isn't an issue. Thanks for all your help.