I have a 2006 R6 with 12k miles. I was riding it yesterday and I noticed while I was in 4th and got above 12k rpms, the bike shot up to redline instantly so I upshifted to 5th and instant redline. I upshift to 6th and the rooms shot back down to normal. I then went through all my gears: 1st was good, 2nd was good, third was good, 4th seemed to slip over 12k and 5th slipped over 12k and 6th was good. I'm not very mechanically inclined when it comes to the transmission stuff so any ideas what could cause this to happen. On a side note, this is my very first thread ever online! Haha please help family!!