The only difference in our kits for the 2006-2014 YFZ450’s is that they have 12mm diameter tie rod threads instead of 10mm threads that are on earlier models.
Stock brake lines should be long enough to install the +4.5” kit if you disconnect the intermediate brake line support on the a-arms to provide more slack in the lines, but they will probably not be long enough for the +6.0” kit. You may also need to disconnect and reroute the brake lines over the top frame tube to allow even more slack.
Diamond J Customs does sell brake lines if you would prefer to use extended-length stainless steel braided brake lines with your widening kit.
You can find more general information about our widening kits under the Front Widening Kits menu from the Home Page.