<HTML>I've got a few friends here in Spain who have derbi gpr, and I can tell you that they are much more powerful and run faster than an Honda NSR, for example. the feeling is very nice and powerfu, but they need quite good leadin. (i'm not sure if that is how its called, but you have to drive softly and without going too fast for about 750 km)
i recommend it for anyone who is familiarized with bikes
I'd like to know if putting a good exhaust and an exterior filter with a 46 dented gear (the sort of gear with the chain in the back wheel; maybe plate??) would work.
I've got a friend with a Derbi Senda R that has many stuff on it, that gets 125 km/h.