250cc 3 wheel motorcycle 1,OEM accept 2,reasonable price 3,short production time 4,satisfactory after-sales service 250cc 3 wheel motorcycleEngine specificationitem number ... Plate derailleur type Regular meshing gear typetransmission ratio,junior 3.333 Output sprocket teeth 15 The capacity of ... 1,Chongqing is motorcycle base, the quality is the best in china. So never compare our tricycle with it from ...