Gaskets

[yellowWB400ex]

If I buy a xr400 top end gasket kit from RockyMountainAtv.com will it fit? How close will the compression be with a 11:1 wiseco std. bore?

[400exrider707]

Im pretty sure its still under 11:1. I'm in the same boat, I just installed an 11:1 but I finally decided to run all of the 400ex gaskets. I'm what you would call an extreme budget racer. So at this point overall reliability is more important than 1/2 HP. Also I did notice a substantial gain on bottom end even though I'm running all of the gaskets! so dont think that your not going to gain anything by putting all of the gaskets on.

[yellowWB400ex]

My main question is will the xr400 gaskets fit?

[UglyMotha™]

yes same motor pretty much, only with a kicker, rumor has it heads are flowed a little differently