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So I just Bought a 03' 400ex and...
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Posted by: rohlik125

So like I said i just bought an 03' 400EX. This quad is super clean, so I figured i could trick it out. Well the second day i rode it the bearing went out that drives the chain, the small sprocket on the motor, I don't know the technical term for it but hey. So i took it back to the dealer and they covered all the work and it all ended up good in the end, but has anyone every heard of this happening on the 400s or what. I thought it was kinda weird, maybe like a factory defect. Thanks.

Representen Mayberry,

Aaron

Posted by: 250EXking

yeah the front sprocket is its called. yeah thats odd, never heard of that happening before. specially to a new bike.

Posted by: mxquadracer

One of the only cases in 4 years that I've heard of