400ex carbs

[mod300ex]

i just purchased a 400ex carb wiht a kNn jet kit for my modded 300ex i was wondering how much a difference it makes and how much power/speed i will gain..THANKS for ur help

[speedy400]

Well I have a Dyno jet kit, it helped knowtisablilly but then again I took off the airbox lid right away.So ya I bet it helps out nicely for the money.-darren