DR.D Rider Support Attends 2011 Mammoth Mountain Motocross

DR.D Rider Support Attends

2011 Mammoth Mountain Motocross 


 Norco, CA (June 6, 2011) ­Dubach Racing Development (DR.D) will attend the 43th Annual Mammoth Mountain Motocross to support all DR.D Riders. Visit the DR.D display on vendor row, repacking service for all DR.D exhaust systems performed free of charge (while supplies last), R-U-Rich jetting services, and fill out a  Rider Support application. 

To learn more about DR.D Rider Support Program, visit www.dubachracing.com


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  • All pipes are personally track tested by Doug Dubach, a 27-year Yamaha test rider
  • Dubach has more experience and places greater effort with track testing than any other exhaust company.
  • Dubach racing career includes 4x Four-Stroke World Champion, 18x Vet Champion, and 8x Loretta Lynn Champion, 2010 USGP Veterans Champion and a Supercross Main Event win in San Jose, CA.