i have a kfx400 for my trail and play bike... u beter look into the athena 440 kit or the yoshi kit. your going to miss the power of the shee. i run stage 2 cams, yfz carb, yoshi full pipe , procom adjustible cdi and a 13:5 to 1 piston (strait race gas). it runs good for a 400, but for a trail bike id have to go with the raptor 700.