2011 Hahn finished 17th on the year racing a Yamaha YZ450F. The Texas rider finished the season with three top-10 finishes in the final five rounds.

2010 Hann notched a solid eighth-place finish in AMA SX, with h is best finish a second in Salt Lake City... In MX, he finished 13th overall despite missing two rounds, with a best finish of secon d at Moto-X 338... Raced with Rockstar Makita Suzuki.

2009 Running a limited AMA SX schedule, Hahn’s best finish was 7th at Jacksonville (April 4)… In AMA 450 MX, Hahn came on strong in the late-season, notching a win, a 2nd and two 4ths i n the final five rounds... Rode for Kawasaki.

2008 Hahn raced in the AMA Supercross Lites West Region Series, earning podium finishes at San Francisco and San Diego, Calif… Entered select AMA Supercross races, earning fifth-place finishes at Minneapolis, Minn. and St. Louis… Raced in the AMA Motocross Lites Championship, his best result a fifth-place overall at Wortham, Tex… Raced with Motosport Xtreme Kawasaki team.

2007 Hahn raced in the AMA Supercross Lites East Region Series, earning podium finishes at Daytona Beach, Fla., and Detroit, Mich… Raced in the AMA Motocross Lites Championship, earning five, top-10 overall finishes… Raced with American Honda Motor Co. team.

2006 Hahn raced in the AMA Supercross Lites East Region Series, earning a secondplace finish at Houston, three additional top-five finishes, and a podium at the Las Vegas AMA Supercross Lites East/West Shootout… Raced a limited AMA Motocross Lites Championship season, his best result a sixth-place overall finish at San Bernardino, Calif… Raced with SoBe Samsung Honda team.

2005 Raced in the AMA 125cc West Region Supercross series, best result a fourth-place at the Jan. 8 Anaheim, Calif. race... Hahn contested the AMA 125cc Motocross Championship, earning overall top-six finishes at Southwick, Mass., and Lakewood, Colo... Raced with Amsoil Honda team.