hello,does anyone know if the shock absorber from a ducati 900ss 1989 is the same as the ducati 750 sport 1989.thanks

I have no idea if they are the same shock. I would assume that it was a bit better shock on the 900 Sport than the 750, but I'm only guessing. If you want to know if it will fit, YES. As a matter of fact, the shock from all the later SS models will fit just fine. The shock from 91 - 98 900SS is 6mm longer than the 750SS, which helps quicken the steering a bit. Works well.

Cheers,