Kymco MaxxerThe Kymco Maxxer is a line of all-terrain vehicles produced by Kymco since 2005. The range includes the Maxxer 50, 90, 300, 400 and 450i.HistoryThe Maxxer entered production in late 2005. It initially offered two models, the Maxxer 50 and 300. In 2010, Kymco introduced the Maxxer 450i.