I now have 2000 miles on a blue busa---I just changed the rear tire---looked at my Vortec sprocket and chain. Old tire was down to the wear bars---sprocket had little bend marks where the chain rollars (drive side) and I have taken exceptional care of my did x ring chain. I clean and lubricate it after every ride. I think it is ok. How about you guys??? My Vortec sprocket is a 41 tooth and had been on it since it was new. I am putting a new one one next weekend. Do you guys think the chain is shot too---looks great and has no binding.