This is my daughter's, who is 5 years old, 2007 Yamaha Raptor 50. Rejetted the carb to Raptor 80 specs, modified throttle housing restrictor to allow full throttle, cut off 5/16" off throttle slide in carb, totally eliminated stock air filter system K&N air filter right off the card with outerwear, FORGOT TO MENTION performance CDI, painted rims front grill interior grill added some purple LEDs wired right into the ignition, remove spark arrestor put on tip, some shock protectors and of course couple Hello Kitty stickers because she likes hello kitty. This is a work in progress more to come
VERY IMPORTANT I added rear wheel spacers. this is a MUST. Your son/daughter will flip the quad if you do not do this. I widened the rear wheels 3/4" each. much more stable.