I discovered this fact the first time that I ordered a new chain for my bike. The company that I purchased the chain from, had no idea that the swingarm had been lengthened from the 2006, to the 2007 model. I was in the middle of installing the new chain and was confronted with the fact that, what was sent to me, was about 3 links too short! The company went good for it, replacing the chain, and the shipping costs to "right the wrong".The 2007 and later swingarm is 15mm longer. Smidge is probably an overestimation.