2019 Yamaha Golf-Car UMAX Two GAS EFI, MAXIMIZE YOUR WORK LOAD!! 2019 Yamaha Golf-Car UMAX Two GAS EFI Just as strong, resourceful, and reliable as the UMAX One, but additionally equipped with an even more substantial cargo bed. Measuring in at 41" long, 46" wide, and 12" deep, your maintenance team will have even more volume to work with. 1200BLS. TOWING, 800 POUND PAYLOAD.