Kris Keefer got the low down on defending 450SX champion Chase Sexton's new Red Bull KTM 450SX-F machine a couple week's back with the help of mechanic Brandon Zimmerman. After switching over from his long-time home at Honda, hear what Sexton is doing to setup the KTM to his liking. Zimmerman discusses the engine feel Sexton likes, why he chose to run KTM's newest factory edition frame over the old one, and what things he's particular about with the motorcycle from week to week.

Film/edit: Kellen Brauer

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