a few things to look out for
- the 04 had a front wheel recall
- a badly wheelied bike can crack the frame welds, have a good look under the tank on the top and bottom weld seams
- most have a steering damper added as they do get lively without one, the owner might try to sell it separately
- Brakes aren't great , a brembo master helps a lot or a later master cylinder or go the whole hog and replace the calipers
- like the other's the airbox needs a good clean as it will fill with debris at the sides of the air filter
- Spark plugs fail individually and need replacing quite often and it's an hours to tweo hours work to do , no problem just awareness
- due to age especially you'll prob want braided brake lines
- headlights aren't great, some will upgrade to HID's
Overall fantastic , I love mine even if the engine has a few challenges, most likely to a lack of use on my part, 8 years on and I still love it just to look at