DR.D set up at Mammoth Mountain MX, this picture was taken before the gate was open to racers. DR.Ds are you “R-U Rich” program is a huge hit again at this years races. We test any and all four stroke riders free of charge.
Check out DR.Ds Mark Tilley talking about “R-U Rich on Transworlds Website: http://motocross.transworld.net/1000097692/videos/mammoth-mountain-mx-tv-vet-weekend/
