Derbi-forum.nl

I have jetted the carb a bunch from 88 to 124 :D fiddled with the screws and the needle!! But the funny thing is i can run the bike on 1/4 throttle but when i open it more it starts to like lag cough or whatever, and if i go full throttle it just starts to turn off! I am scared that the exhaust is t...

Hello guys i am realy sorry for writing in english but couldnt find a forum in english! So i just got an MHR team 77cc 50mm bore cylinder on my derbi senda drd 2003 sm and I am trying to run a dellorto 21mm carb and a jasil crank and a i think its the metra kit pro exhaust (its not the one that goes...