f4i overheating ???

[ross81]

my f4i temp keeps climbing when im riding till it starts overheating and i have to switch it off to cool down. i have flushed the system and replaced the coolant. basically even in cold weather without doing any drifts/burnouts etc the temp still creeps up and into the red.. im running the standard 1 fan but i do have it wired to a switch, even when its left always on the bike still overheats..

fan is defo working and running the right direction, coolant level etc all ok,
any ideas, faulty thermostat maybe ? can i just remove it or should i replace it ?

thanks..