 Its predecessor is the KX80 Bigwheel, which is still sold in the UK under the name "KX85 II".Longer travel suspension and larger bore size main differences between these bikes which otherwise are the same.The KX100 can be raced in dedicated 100cc motocross classes, or open minicycle classes, such as Supermini in Canada, which allows up to 150cc 4-strokes and 85cc-112cc 2-strokes as of 2007.