#HappyNewYear

Twenty years ago this month Yamaha dropped its game-changing four-stroke MXer bombshell, the YZM400F. The prototype set the precedent for a bold new era of four-stroke machinery. Aboard the prototype Doug Henry won the final Supercross round of the 1997 season in Las Vegas. Henry returned the following year aboard the production version YZ400F to claim the 1998 Outdoor National Championship. A Supercross championship for a modern four-stroke MXer wouldn’t be accomplished, though, until Ricky Carmichael’s 2006 championship season aboard a Suzuki RMZ450.