i have a 155 main jet from a k&n jet kit....is this the same equivalent to the stock kehein main jet?....mine is running VERY good, no bogging, plug is perfect, no glowing pipes or smoke... ihave a 416 with open air box and still only run a 155 .........if anyone knows, their help would be greatfull

 

As far as I can tell they are the same besides the Keihin is just alot easier to install.

 

hey, thanks for a reply..thats what ive recently heard....they are exactly the same except the k&n are hard as crap to install since you have to use a screwdriver....thanks for the help....looks like ill stick with this jet size, its running awesome.... i just installed a racing turn down end cap fom white bros...its awesome but makes it louder....havnet had a chance to take it out for a real test yet...i removed 2 disc plus the turn down, ..it supposed to improve bottom end quite a bit, but ill prob have to mess with the air screw some to fine tune it....thanks

 

actually i miss imformed you all on the first post...i have a 160 k&n jet....anyhow, maybe this makes more sense....