Hefe,
Once I finish the current build of my 660, I am then going to do a build on a YFZ also.
However, we are going to use a slightly different motor, & will be in the 110+ hp range, but still light-weight.
What motor I hear you ask? A mildly built RG500...............
What I was wondering was how you got on with swingarm length?
Are you running a stock length, or wherer are you at with that?
The RG I think will need to go longer than stock, but I'm not sure where to aim for & just wondered what you thought based on how your YFZ700 goes?
Thanks
Phil, aka Dragonz