2017 Honda CRF450RX, New 2017 Honda CRF450RX...the ultimate weapon for offroad competition with both kick and electric start, engine mode select button, large fuel tank and 18-inch rear wheel. In the enduro, hare scrambles, and GNCC world, the CRF450RX is it! At its core, Honda's taken the new CRF450R and optimized it for off-road racing. And not with just some new tires or graphics. The results are electrifying.