Just got off the phone with Zip Ty Racing after ordering a few parts and I asked them if they happen to be working on a new tank for the 450/510 bikes... to my surprise he said yes they are working on a prototype tank prob be around 2.6-2.7 gal. They dont have molds yet or anything but maybe around end of the year they may have units for sale.
Not Yet??? They said that at the 1st H&H, with an indented area up top front for various steering stab mounts to fit.