Henry fought back and wanted to race again. He slowly worked his way back into shape, and Team
Yamaha took a chance on him for the 1996 season. By the end of the Nationals, Henry was winning motos once again and had regained his form. For 1997, Yamaha approached Henry with the idea of riding their prototype YZM400
four-stroke in competition. He accepted the offer. While he raced and led the early part of the 1997 Supercross season on a YZ250, Henry complications from a hand injury forced him to withdraw during the middle of the series. He came back riding the four-stroke full-time, and posted top-5 finishes at the first few Nationals, which was unprecedented for a four-stroke machine. Henry raced the bike at the final Supercross in
Las Vegas, Nevada, and won the race in the prototype bike's first and only start. Tragedy would strike Henry yet again that summer, as he suffered two broken wrists at Budds Creek, mere feet away from the jump where he had his earlier injury. But Henry would battle back again. In 1998, Henry would race the production version of the prototype four-stroke, the YZ400F. This machine started the four-stroke revolution in motocross. He battled through a strong but unspectacular supercross season where he finished 7th overall. The outdoor season would be Henry's chance to show the bike's true capabilities. After a win at his home track of
Southwick, Henry followed up with a triumphant win in Budds Creek, the track where he broke his arms and back. He would go on to defeat
Jeff Emig,
Jeremy McGrath, Ezra Lusk,
Kevin Windham,
Mickael Pichon, and
Greg Albertyn, earning five overall wins in one of the most competitive seasons ever to take the 1998 250cc National Championship at Broome Tioga Sports Center. He accomplished this with one whole round left. Having accomplished all his goals, Henry scaled back to a partial schedule for 1999, where he dabbled in
snocross for the winter. He returned to the nationals in a farewell tour wearing his #1 plate. He started slowly after taking the winter off, but still managed to score overall wins by mid-season. Henry had been a regular on the
AMA Supermoto tour, winning many National events. He gained national attention once again by winning the gold medal in the 2005
X-Games Supermoto race. Henry also won a 2005
Grand National Cross Country enduro race in his first attempt on a stock Honda 450. He followed that with a bronze in 2006. ==Semi-retirement and subsequent injury==