Be careful folks when you install the 426 with 13/1
Its powerful but with power comes risks. One of our race quads just destroyed the whole motor,case,cylinder,crank,starter. Im still in tears. I knew it would happen though. If anyone has a 400ex motor for sale let me know. hopefully my race ported head survived, I will do a autopsy and take pics today.

 

I know how you feel man. Built motors are friggin' time bombs without regular professional care (i.e.; you got the money to replace parts after a few rides before they go bad). My new policy is bolt-ons or nothing, intake and exhaust that's it.

 

<< My new policy is bolt-ons or nothing, intake and exhaust that's it. >>

Good policy.....I adopted this philosophy and have rode (instead of wrenching) ever since. Sorry about your bad luck Shockwave.

 

built 400ex's on a stock rod are baaaaaaaaaaaad news bro.

 

Built 400Exs no matter what you do are going to eventually be a problem. Trust me I know.

Adam Smith

99 400EX

02 CRF450R