Morris contested the full 2017 schedule as he scored three wins at Adelaide and Darwin (twice). Entering the season finale at Lake Elsinore Diamond, Morris trailed Matthew Brabham by 15 points but did not participate due to a rib injury. In his place, he had off-road veteran Jerett Brooks drive his No. 67 truck, with all points scored by Brooks going to Morris; Brooks finished eighth and second in the weekend, enabling Morris to win the 2017 championship by one point over Brabham.