im currently trying to work out what monoshock to fit to my 89/900 ss, getting close to refitting both wheels and to a rolling bike, anyone got any good ideas as my first monoshock bike,.cheers

Any shock from the SS series will work. The 900SS shock is 6mm longer than the 750 unit. The longer shock will give you quicker steering, which is good for the Sport. Of course there is a bunch of aftermarket shocks for these bikes, and you can usually find a good deal on Ebay if you are patient. However, the spring and body of later shocks, and most aftermarket shocks, are wider, so they will interfere with the crankcase breather tank.

Cheers, Phil

You could also contact Ian Gowanloch at Ital Spares 02 6946 2626 and see what NOS items he may have, as Phil wrote the 900SS rear shock from that series will work, had one in my Sport (trackday bike) and it worked very well indeed, it is 6 mm longer as mentioned, but drops straight in without any drama and usually doesn't cost to much.

thanks for the feedbackon that , i ended up getting the hagon M60030 , not arrived yet but meant to bolt straight on, it was reasonably priced and i hope a good choice cheers

recieved and fitted the hagon, it appears to be about 5mm longer than the old marzochi i had, only got preload adjustment
so very basic, see how it goes, thanks

Well that answers the question of what length shock was on the '89 900. Seems same as the 750 Sport, and the later 750ss.