so far no one has a gusset kit out yet, I would look for jb racing and Lonestar to develp them within the new prob 3 months. for the average rider gusset kits are not necessary, they are only necessary when landing from large jumps, and pounding through whooop sections. Now the new yamahas need gussset kits for sure. when Skip (dana creech's dad and mechanic) took off his subframe it was starting to bow out. luckly Mike Walsh welded up a 4130 Chromoly subframe. Unfortunatly druning moto 1 in GA the frame broke were it meets the subframe. some sereous gusset work needs to be done on the yfz.