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I got done building my 09 trx400x at the beginning of this month and it is really fast now. It is bored to 416 with a 10.8:1 je piston and a stage 1 hotcam. It also has kibblewhite valve springs and a crf450 timing chain. It has about 30 hours on it and 10 of those were break in. I recently drag raced a raptor 700 and some 450's and won. I would like to see more people create 416's that will compete with 450's.
 

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Chad Nothing better than building something and racing it. How long of a race was it? Do you do alot of drags. Stock exhaust?
 

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We are having a big fun filled day of Drag racing @ Busco Beach and ATV park on Dec. 2 It's gonna be a 400EX shootout I guess I'll get to see how the "MOOSE Rocket" Fairs? Gonna be a power to weight concern on my end LMAO. . . . Should be fun though
 
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