Ok, it appears that I have that 4K buzzing sound that I've read about in a couple of other threads. Just started noticing it the other day, and indeed, it becomes audible at about 4000 RPM. Many have found it to be coming either from the ignition switch or the fuel tank cap. I've applied...

Hello everyone, I'm recent convert to Kawasaki. Moved from a GSXR to a fresh out of the box 08 ZX10R last month and have not any second thoughts at all. I love everything about the bike!....except one thing: The vibration and buzzing in the front end that occurs between 2000 and 4500 RPM...