fourstroketech 465 big bore kit for 400ex?

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Nov 22, 2005 | 10:43 PM

phillup

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Trailblazer

Joined: Mar 2005

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fourstroketech 465 big bore kit for 400ex?

i just looked on fourstroketechs website and i saw that kit. Has anyone done this kit?

Nov 23, 2005 | 08:23 AM

quad2xtreme

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fourstroketech 465 big bore kit for 400ex?

There is a kit on www.motosport.com for the 400ex too. Look under the engine/crank section. It is a Hot Rod crank kit.

/Jon

Nov 23, 2005 | 03:21 PM

quad2xtreme

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fourstroketech 465 big bore kit for 400ex?

By the way, I should have mentioned that you couldn't find a more reputable builder if you choose to have Mickey install the kit he sells.

/Jon

Nov 26, 2005 | 10:08 PM

kcmac01

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Joined: Nov 2005

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fourstroketech 465 big bore kit for 400ex?

Well i have the kit and i have to say very fast very very fast in the top end u have to do alot of head work and port and polish the problem i am haing is that the head cannot handle the stroke so i have to have it ported and reworked and tweaked.or you will be smoked bye a 416 kit