William 1, you need to read closer and you will see this is a 2006 bike. I don't know what line of work you are in but you don't have the total picture on the bike Mfg. process. I would find it unlikley that yamaha makes their own swingarms. I had a 1995 CR 250 that had a cracked swingarm and honda shiped one from canada where it was made. That was the same year they had a recall on the forks, crankshaft and engine cases. Defects happen to the best.