2017 Kawasaki MULE PRO-FX EPS LE, The 2017 MULE PRO-FX is our fastest, most powerful, three-passenger MULEâ„¢ side x side ever. Built on the same rugged platform as the MULE PRO-FXTâ„¢, this revolutionary side x side also comes equipped with the largest cargo bed in its class. To top it off, the MULE PRO-FX is backed confidently by the Kawasaki STRONG 3-Year Limited Warranty.