I am riding at spring mountain motorsport park this weekend. I ride a gen 4 with the usual mods. I put jri/ gp suspension on and ride in the fast group. I'm about top 12 here laptimes wise. This is my first time running with the gen 5. I can't believe how Fucking fast these bikes are. It walks my gen 4 on the straight away and is strong on corner exits. If you are on the fence about which one to buy....Gen 5 is the business for track use. I mean.....Holy cow. I am coveting....