Bike MOT's are the same as for cars.
For example my 4X4 was given two advisery notes. One for the tyres and one for the shock dampers. The tyres were the originals that came with the car and were going to be changed anyway. The dampers again original which I had checked at the next service and guess what ... Nothing wrong with them. The MOT at that time was undertaken by a national chain who advertise as "Tyre and suspension sepecialists".
A class example was an Elise I had for a year which given a fail for ... you'll love this one ... rusted sills errr it's chassis is basicly a bonded and rivetted alloy pan, it might corrode or debond but rust hmmmmm I think not. Trading standards did take an interest in that but it was hard work!!
So sometimes you are being fed utter BS
However I have heard of some fails in the rose joints, even on some of the ohlins shocks fitted to Ducati's. The main body seems to be made of brass with an inner shell of something more organic which plain wears out in as ittle as 11 - 15K. You get play in the joint, main problem being the initial wear isn't obvious and is just a little play. But once the inners bearing liners starts to wear it allows the joint to start hammering up and down and breaks the lining. Might be a lubrication fail, QC issue or just a bad batch of rose joints. It doesn't seem to be a real issue in older monsters though, so indicates different spec rose joints??
Make it Ducati's problem, a 3 year life span for a component like this isn't what any reasonable person would expect.
