Going to sort the track 1000rr4 out over the winter, main question I have would the rear shock be the same for both the 600 & the 1000 of similar years ? Ohlin's shock is like hens teeth for the 1000 but quite a few for the 600 ? ( second hand )
The 600 one is different, I got my rear from the states new, set to weight and delivered for about the price of a 2nd hand one here (which would need to be sprung to weight and serviced) Can PM you details if it helps