Ganz genau - da hilft nur Ausprobieren 
Strida SD is the older two speed drive, replaced nowadays by the 3 speed EVO.
Both of mine are equipped at the moment with 18 inch, but if you want you may also try 16" wheels.
See also:
Grips for bend stear kit
At Mike’s hompeage there must be the Strida logo.
No, 1210.