CR250 Ignition

[ATVRacing2]

I have a question regarding the CR Ignition for a 250R. I have seen that the 2001 CR250 Ignition was a preferred year to get. I see however ESR now sells the 2007 CR Ignition. Is there a difference between which years CR250 Ignition?? Any Pros and Cons I should be aware of no matter what year CR250 Ignition to get?? I am wanting to install a CR250 Ignition on my 250R so any information and advice would be greatly appreciated. Thanks.

[Tbone07]

Yes there are numerous differences. The main one being that the 2007 had an electronically controlled power-valve, the 2001 was mechanically driven by a gear from crankshaft RPM.

Some other guys will comment with the more scientific answers, that's not my expertise.

Here's a recent thread. Look through the "Engine" section for even more

http://trx250r.org/showthread.php?2189-CR250-CR500-Ignition-Discussion