cornerslider
New Member
After following all the issues on the forum, I did 3 things to mine. One was going to ICE coolant. Drained and flushed the system and then flushed the system once with ICE to be sure I had full strength. Second I added the higher pressure radiator cap. Thisrd, I pulled the fan and trimmed the shrouding away. Result is one to 2 bars cooler running and the fan doesn't cycle as much now. I live in Houston, hot and humid and did a bike school track day the 30th of July and the bike ran cooler all day.
+1..... To what he said!!!! I baby my bike on the street, and I run the hell out of it on the track. I did ALL of the above, and got the same results. My best advise to ANYONE buying an RC390- Learn to work on your bike yourself, and don't depend on the factory warranty for anything other than a catastrophic failure.... Just my opinion-
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