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350-400cc kit

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I'm looking for info on the 400 kit for the 350 from thumper or ht. Who has one and more importantly how does it work offroad as i dont ride motocross, does it become more peaky or aggressive or interfere with the sweet handling of the stock 350

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I just sent my cylinder and ecu to HT racing and they will sent me back the 400 kit and ecu reprogrammed so in 2 weeks Ill let you know can not wait !!!!!!!!!!!!!!!!!! My christmas is defo coming early !!

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well if it creates more low end , it has to be better, especially in the woods...

problem with that is if it's too much like an angry mx 450 it's no good to me

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if you read Rickks post about the 400 kit its very detailed !!

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Clearly a 400 will not be as "angry" as the 450.

I'd love to have my 2011 450sxf motor in my 350 xcf... I'll bet that is what the dungy bike will be like...

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