Anyone experiencin any overheating problems and /or have a cure?
no fan? wth...Trail riding can be pretty brutal on these bikes. They have no fan to force air through the radiator. I've seen a lot of bikes start to boil out the caps on trail rides. Best thing you can do is always try to stay moving, once it happens though just let it sit and cool off. You could run engine ice radiator fluid in the bike for a better cooling coolant. I'm not sure if after market water pumps would improve cooling performance too?
Probably try a combination of the higher pressure radiator cap (raises the boiling point), a freer flowing exhaust (keep less heat from building due to back pressure), Redline Water wetter or Motul MoCool. (I didn't notice any difference with Engine Ice either. The sprocket probably helped because the engine revs a little faster to circulate the coolant quicker I'm assuming.I live in Honduras, Central America, with temperatures from 30 to 40 centigrade.
Overheating in my KLX-450r has been reduced considerably since I removed the exhaust system and changed to a 52 rear sproket, instead of the 50 rear sproket that came with the bike.
I hope this helps anyone...