400ex mods

[400exrida06]

I was just wondering what kind of mods I should put on my stock 400ex? I was thinking about putting an hmf pipe on, wasnt sure if i should go with full or a slip on, and maybe a k&n filter or somethin, what do you guys suggest?

[6858-400ex]

just a slip on if it is stock full would not be needed

[400exrida06]

If i was gunna get a full system what other stuff should i put on? What type of filters do you's prefer, sometimes theres alot of mud and others its just alot of dust and dirt.

[DaleJrFan]

see signiture for some pretty basic mods. as for the filter, k&n is a good upgrade, and if you are going to put a full system, at least get a cam mod or a high compression piston.