Yes I found the longevity thread in the 640 LC4 thread link but I was hoping to get a little more specific. I would like to see the following information from LC4 owners (past or present). 1. Bike: 2. Year: 3. Bought used or new: 4. Current mileage: 5. Modifications done: 6. Mechanical work done: 7. Upgrades done: 8. Current tires on the bike: 9. Percentage of road versus dirt use: 10. Would you buy another one?: 11. Did you replace the main shaft bearing (if applicable): 12. Pic of the bike if available: Mine: 1. 640 Dualsport 2. 2001 3. Used 4. 4300 5. Charcoal canister removal 6. Swingarm bolt sheered off in the bottom insert nut. Couldnt get it extracted so I had to tear it all down and drill out the nut and bolt piece. Pressed in a 8mm metric nut and put it all back together with a new nut. 7. Aluminum skidplate 8. Pirelli Scorpion AT's 9. 75% road (commute on it) 25% dirt 10. I think so, ask me in another 10,000 miles 11. No, still unsure if I will. 12. See below Thanks for the input folks!