As I understand it, there was a vendor change right about the time we got the 2011 Nambos (May 2011). I broke mine on my '11 Nambo after a few kicks then broke my son's after three kicks. I sent a bunch of pics to the factory and they jumped on it pretty quick and made some changes to strenghten them. I talked to a customer last week who had broken one on a '12 but he said his looked like it had some contamination in the aluminum where it broke. We warrantied it, of course. That is the only kick starter problem I have heard since we got '12s and '13s. My '12 has quite a bit of time on it without a problem.