| Ask for what maintenance has been done to the bike and when. Guys that look after the bike will keep a book of everything that has been done inbetween meetings, trackdays, etc. Ask for their schedule of oil changes, etc...
If they give vague answers to that question, walk away you are on to a dog or haggle seriously because of maintenance they have overlooked. Anyway, once you look into the engine you are likely to find some stuff to do like valves clearances, etc... You cannot tell from the outside but it is likely that they have not gone into that expense just before selling the bike. So probably budget that into your purchase.
Also with track Dukes you will find some basic 748 / 916 / 996 that have essentially a bulk standard engine and few special track bits in the £5000 range or you will find a competitive racer (955, 996Corsa, 748RS, 99*RS)... those have little in common with a standard bike and would cost you the best part of £15K to £25K. Maintenance would be also fairly steep on those.
As for track bits, look for race exhaust, if possible full system, improved Master cyl (brembo GP), cast iron fully floating discs are a popular choice, rear sets, etc. If you buy off a racer, try and get some spares like spare body work or wet on wheels.
Finally look carefully what they've done with the loom (especially on the right hand side next to the battery). Mine is a complete mess and lucky that Nelly likes a job well done and looked after it. Ideally you would want a race loom but that discounts the idea of the bike easily making it back on the road.  |