Image While the Red Bull KTM 450 SX-Fs are back to the steel engine mounts from the production bike two years ago. Credit Michael "ML512" Lindsay Related: Monster Energy Supercross Vital MX Pit Bits Phoenix Supercross 2017 Use keyboard arrow keys to browse the gallery. Swipe to browse the gallery. Prev Next 4 of 57Autoplay Autoplay SlowMedFast Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter GuyB 1/28/2017 5:55pm Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter