Depending on what year 650 you tested that on, it could be that on 07+ it changed with addition of ABS being an option. The swingarm is 10mm longer on 07+ DL650's over 04-06 models. Also, not sure if this changes anything but in 09, they changed from using a pin in the axle to just a locking nut on the axle. All of those may have small variations on how it fits. The 1000 has been the same since 04 and the 02/03 might be the same on the axle too, not sure?