One of the other things that is different from the 06's to the 07's is the rear subframe, in that they have different passenger footpeg assemblys...on the 04-06, the footpeg assembly is welded to the subframe, on the 07 onwards, the rear passenger footpeg assembly is bolted to the rear subframe.
Other than that, 07's onwards have an oxygen sensor, which the 04-06's dont, also there are different radiator guards, different front brake calipers, and different front brake caliper mounts, updated, different, and differently mounted front fender...but internally, i think the forks are exactly the same.
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