iv got a gilera runnervx125 overheating?

i suspect the head gasket is leaking water into the combustion chamber its a common problem with vx's and dna 's usually starts to do it when the water is hot after about 5 mins of riding ,check the coolant bottle to see if its bubbling and getting pressurised more than usual when its running ,take the coolant bottle cap off before running and then and start it up.

adam bike doctor
July 2009