Trying to figure out which KTM SX-F could be right for you? We grabbed a few of our testers that ranged in height, weight, and ability and stuck LitPro devices on each of their helmets, then sent them out to burn laps on the 2017 KTM 250 SX-F, 350 SX-F, and 450 SX-F. Listen in as each tester explains what he thought of each bike and what he thinks he was fastest on. Check the July issue of Dirt Rider Magazine to see the actual lap times of each tester and which KTM they were actually faster on.