I use Redline Water Wetter in everything I own. Even the tuner put it in my SC cooling system.
When I do track days that require coolant to be drained, I run the Redline and water and the bike runs cooler than with coolant.
EDIT: I forgot to mention that you DO need some coolant to protect against corrosion. Especially with dissimilar metals. BUT, you should reduce the amount of coolant to approx 20-25% of the mix for the best results from the water wetter.