We got my wife a Moto 80 this summer. She liked the body style compared to all the other available options and fit her good at 5'2" tall. We were fortunate to pick this up unexpectedly at a rural central IL Wal-Mart in the clearance section for $150. The low price I paid allowed me the money to install a Predator 212 on her one week old bike and feel like we hit the jackpot. To me it was very clear during the one hour we ran the 79cc that it wasn't going to be powerful enough. It struggled up hills with a rolling start. From a dead stop forget about it. There are very few mods for a reason. Obviously the simple bolt on mods will send you in the right direction but I feel like you'll still feel like it's not enough power. Just now you've spent money you could've put towards an engine that will satisfy you. I have a 2015 Camaro V6, 6 speed manual, 323 horsepower. Don't get me wrong it's quick. Faster than most cars. But I want more displacement. The V6 Camaros feels extremely quick at high rpms, but how often do I really wind out the gears? The SS, with the larger motor, feels much faster and satisfying just accelerating to the speed limit. The Moto 80 can move decently but it's at the higher speeds you see less often. I'm not just trying to talk you into a Predator swap because it's a guaranteed way to get what you want, but several times I've put money in the wrong cars thinking that bolt on mods will make it equal to or better than the model I couldn't afford. Torque is what makes things fun. You'll never get the torque out of the 79cc motor. A 79cc motor with equal horsepower to a Predator 212 would probably have much less torque, not feel as fast as a Predator, and cost 5 times the 212 swap. Like previously posted, a Moto 80 with a 212 is dangerous. Fortunately my wife and I have not "lost" it yet but my buddy has. We have to try pretty hard to not wheelie. My buddy underestimated the power and actually tried to wheelie. The bike skidded across the parking lot on it's side for 20 feet like it was on ice. Sorry for the car analogies. I'm not extremely experienced with mini bikes and speed but I have had several different types of cars that I'd race at the quarter mile track, do mods, see the gains the following weekend. The fundamentals of a vehicle powered by a gasoline engine remain the same. Personally I always got better gains by starting with gearing rather than intake and exhaust. Unfortunately the Moto 80 already has a large rear sprocket. Take care and good luck.
