Career
He currently competes in the MotoAmerica Superstock 1000 Championship for Meen Motorsports aboard a Yamaha YZF-R1. Pre-American Medical Association
Born in Glendale, California, Herrin turned professional in 2006 a year after winning a WERA 600 National Championship. Prior to winning the 2004 USGPRU 125 title at age 14, he had raced mini bikes and Yamaha YSR50s and was invited to compete in the World Mini General Practice Festival in Valencia, Spain.
At this event he hit over 100 mph on a Metrakit mini General Practice bike.
American Medical Association
In 2006, Herrin raced a limited American Medical Association Pro SuperSport season, but earned a podium finish at Miller Motorsports Park and took four additional top-10 finishes in the series at a young age of 16. 2008 saw Herrin finishing fifth in the American Medical Association Pro SuperSport standings with a victory at Barber Motorsports Park, three more podium finishes and a pole at California Speedway.
He also led the most laps in the Daytona opener, before finishing second to teammate Ben Bostrom. In 2009, Herrin finished second in the American Medical Association Pro Daytona Sportbike Championship with four victores (a double at VIR and a double in New Jersey), five second-places and two third-places.
Herrin raced with the Monster Energy Graves Motorsports Yamaha team from 2012 to 2013, winning the American Medical Association Superbike Championship in 2013.
Moto2
In 2013, Herrin announced he would be signing with Caterham Moto2 team