Check out atv s c en e and you'll read that Doug Gust will be not only racing his 250r but Tom from TC RAcing is building him a 400 4stroke quad to run in the thumper class. Once Tom gets his hands on that dr400motor (which he has) then I'm sure that it will be one heck of a machine.

 

Does it say what 400 4-stroke motor they are using? In 1999 Doug Gust raced a 400EX in the 4-stroke class. He was usually in the top 5. Doug racing in 4-stroke class is nothing new.

 

The DR 400 suzuki motor.

 

Where can i get a poster of Doug Gust?