which is the best overall borekit out for the kfx 400 now

 

the ct big bore kits supose to be good it gives it like 46hp
the pipe u have supose to give it like 6 does it do anything cuz my wb slip on dont do anything and im gonna buy a new pipe and im not sure whats gonna give me power

 

hey, the march edtion of dirt wheels has a pipe shoot out for the kfx/z they tested 14 pipes