Well I do not do MX anymore so I have converted my 426 to a woods bike. All the usual stuff; ie; flywheel weight, guards, large tank, gearing etc. The bike, although a mx machine can be made to work in the woods pretty good. Stalling, hills and the crazy tight stuff in Alabama do make it tuff though. I rode a 36 mile loop today that took 2.5 hours to complete, very tight. I would still be out there trying to make it up a couple of the steep, snotty rooted,rocky hills if not for the auto clutch. I had a choice a couple of months ago to sell one of my bikes. I have been riding my DRZ400 in these woods alot and the 426 has been sitting since I gave up motocross. As good as the DRZ is I could not part with my beloved YZ, even though riding woods exclusively now. The Z-start has simply saved my 426. My opinion is that I don't see the auto clutch a big advantage on a bike designed for offroad but to make a beastly mx bike behave there, it is the top accessory. I would highly reccomend it to anyone in this situation. Bottom line... I always wanted to ride my 426 in these conditions, now I can.