... Trade Co.,Ltd is professional manufacturer of atv and dirt bike. electric start automatic drive MONKEY BIKEDB-MONKEY:1) Engine: 90cc ... -stroke and air-cooled ,electric start2) Bore x stroke: 39 x 41.4mm, 52.4 x 49.5mm 3) Transmission: automatic drive4) Front ... .5L 11) Available colors: Red, black, blue and chrome Monkey bike(DB-MONKEY-GORILLA) good quality