Those Polistil kits aren't too bad.. The plastic's a little chunky, but they're fairly detailed.
The big problem is that they don't have the cables. Most modelers add the cables to those kits themselves.
Not a bad range from Polistil either
CZ400 Cross
Husqvarna CR400
Maico 400
Suzuki TM400
KTM 400 GS (yes, they actually made a model of an Enduro bike!)
I have a sneaking suspicion there was one other in the series, but my tired memory fails me at the moment... Next time I get a chance, I'll pull them out of storage and check...