BIG bore kits

[fasterthanyouex]

i am wanting to get a bore kit.. i ride trails and stuff but i also like to open it up..what ones do you have and how reiable is it??

[ghak99]

You might want to explain what quad this is for! Or simply do a search, there is a ton of information on this for just about any quad and racing type.

[fasterthanyouex]

this is for a 400ex..my bad guys

[ghak99]

The 416 might be something like what you are looking for. It is a good running bore that is still very reliable.

[b400ex]

what about the 440?

[bradley300]

ive seen a bunch of 416's that can run with a 440. something about a 416 having such a lite piston makes them rev alot quicker than a 440. 440 should have more torque tho

[400exrider707]

If you want to keep reliability then just do a high compression standard bore piston.