The Kawasaki KFX90 has an 89cc four stroke single cylinder engine that emits mid-range power for the 12 year olds that have moved on from the 49cc models and have the experience to get out of the yard. It sits with a wheelbase of 38 inches and a ground clearance of four inches and has a swingarm rear suspension with single shock absorber. The Kawasaki KFX90 has an electric push button start with a back-up kick start and comes equipped with a spark arrestor.