My 1999 is at 24000 miles and i believe still has original chain and sprockets. I just received new parts from sprocketcenter.com and am switching to 17/45, mostly because my wife is talking about riding with me more, and it was, as someone mentioned, relatively easy to stall. sprocketcenter says they provide the right size chain, but it came with 110 links, even though several people are running this combo with 108. I will see if I have to remove links when I install it, which hopefully will be soon.