Gjendor? is that the same as Glunt? or something like t hat?
I guess it will fit if you go down on the sprockets/drivers. Might as well get anti-ratchet ones. Is that a 307 or 345 cm long track? 307 by 51 mm is faar out man.
My guess is that I live 200 km from you
Yes, as Osko Sarre in Karigasniemi says
"we speak, english, norsk and sami"
51 mm could work on a v-max 4 but will reduce top speed due to wind drag in tunnel, and heat up and lose lugs if you ride real fast across a lake. I'm sure it would be great in powder though (the track), but then you got the wrong sled to go "powding" with from the beginning!
Do not hesitate to "PM" me, that is send me a "private message" if you want to talk in norwegian.