boaring out my bike

how hard is it to boar out a 2006 kx250f? i work at shop so some of the guys can help me there. but how expensive would it be if i sent it somewear to be boared out? i would be looking to boar it to something close to a 450f

You can't bore it out to a 450... the highest is something around 300. Sounds like you need a bigger bike.

How many gas fumes have you been sniffing while taking that 250 apart?

thats like asking if i can put 450f valves in my 2 stroke to give it more power....but in short 250 to 450 a big no no

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