2009 SKI-DOO MX Z TNT Rotax 600 H.O. E-TEC, THE 2009 MX Z SLEDS. CUTTING EDGE JUST GOT MORE EDGE.If you're looking for a leisurely cruise through the woods, you might want to click over to a different page. The MX Z was built for those who prefer to ride with their hand on the throttle and their heart in their throat. They're powered by a whole family of mighty and reliable Rotax engines: 550 Fan, 500SS, 600 H.O. E-TEC, 1200 4-TEC and 800R Power T.E.K.