Hi, I have koni heavy track raid fitted to my 90. Have them for three years and love them. My mate has ome's and compared to these the koni's are
alot beefier. They have more oil in them so won't overheat as quick as others. If you have to use them in a heavy vehicle on bad roads I would buy them.
However for use on tarmac, play sites in England/Europe I would use normal heavy tracks or OME's wich are similar. You also have the ability to adjust them.
Time consuming, you have to unbolt the shock but you can personalise them a bit.