Not sure if it is the same shaft, but the output shaft broke on my 06VSTAR Custom at the end of Sep with only 30,000 km on it. As I bought it used, I can't speak for the original owner, but do not believe it was abused. The original quote to repair was over $4000. Not happy with that, I trailered it back to my original dealer 3 hrs away. At the same time I called Yamaha Canada, but they shot me down. So, I wrote a formal letter to Yamaha and my dealer worked with the field services rep in the area to determine what they would do to help. At the end of the day, it cost me $1300 to fix. Yamaha's formal response to me was that they left it with the dealer to determine if they would cover some of the cost. I'm not buying that! Yamaha has not acknowledged that there is a problem with the output shafts, but I believe there is. I have spoken to 3 dealers and they have all had at least two VSTARs with the same problem. Further, when the replacement output shafts come from the manufacturer, they are slightly larger and more solid. That indicates to me that there is a problem with their product.