2006 WR450...I have had to replace the clutch lever twice and I really want the Sunline flex lever. Here is the problem. ALL of the local dealers have them but no part number for an 06. The reference book (TuckerRocky) only says available for 2000-2002. I even put a call into Sunline (OneIndustries) today and they don't have a part number for an 06 either. They are supposed to get back with me today. I've read numerous posts about the switch on the clutch perch that allows us to start the bike with the clutch in and that seems to be the issue with aftermarket clutch levers. Personally, I prefer to keep the stock perch and switch on the bike or at least keep the switch. On top of that, the hot start would appear to be hit in the event the Flex clutch lever bent up during a crash/tip over/ejection. I'm a bit frustrated at this point so anyone with a Flex lever or experience with this please chime in.