One of the ways to improve cooling in a liquid cooled bike is to increase the radiator cap pressure. Stock is usually 1.1 bar. I have used 1.3 bar cap on my last race bike (no thermostat) and didn't have any problems. Does anyone have experience going to a higher pressure cap than 1.3?
Increasing the cap will increase the boiling point of coolant not improve cooling. Thus your engine can run hotter without boiling over. Not sure this is desirable.
if youre going to increase your cooling system boiling point... make sure the whole system is up to the task.
On one of our race bikes we used a 1.6 bar cap and I just googled and see there is a 2.0 bar cap on ebay. https://www.ebay.com/itm/1953034432...V5-YIXbeXbNVY0NTfjX4Db1vJhThXxHxoCjr8QAvD_BwE
If you are blowing water past the cap at an altitude below 1500 feet, there is probably another issue, 2.0 caps are almost essential for tracks like Miller higher than 3K feet above sea level.