Kris Keefer heads out to Hesperia, California, to shake down the new 2021 KTM 450 SX-F Factory Edition motocross model and gives us his thoughts on how the bike handles and performs. Some of the differences between the standard edition include the connectivity unit, muffler, seat, orange hubs, rims, graphics, and triple clamps. See where Keefer feels the bike performs perfectly, as well as where he feels there could be room for improvement.