What can be done for to help the terrible carburetion on the DR-Z/KLX125?
Short of switching to our 26mm carb kit, here are some changes that we made. The carburetor on the DR-Z/KLX125 is almost identical to the carb on the TT-R 125. The needle on the DR-Z/KLX125 is fixed and doesnt allow adjustment. We had good luck changing to the TT-R 125 needle (that does allow changing the clip position). That was our single best modification for the stock carb. See your local Yamaha dealer to purchase the TT-R125 needle and clip.