those things that look like a little gear and that go bad faster than the regular kind. Well I was at track and bought after market ones (MSR), but the application for my bike didn't fit right at all. So I went back and since I needed them bad he gave me something for another bike that was a little bit better. Back at home I ordered the ones from kawi but only the rubber part came in. No bearing. I was like ***. So I go, ok order the bearing. except that cost is like almost 10 bucks, each, and there is 4, I said forget it. My question is, who's got aftermarket chainrollers that fit right and what brand are they?