is it worth it boring a 400?

[speedy400]

is it worth it boring a 400?, is there a big enough power change from stock for the money if you aggressivly trail ride?

Yes it's worth it,,but you should throw in a cam too,,then you'll be replying back to me with big thanks..it's worth it.

[YZROOSTINYA]

i went to a je 416 and a stage 2 cam. i likkeee alot. i can UPSHIFT up hills now into third where before it would barely hold second