I would like to know how to make my Fourtrax faster with making engine mods. Like what kind of oil and stuff like that I know its a slower machine but im just trying to make it a little faster.

Coltrane

 

Maybe an aftermarket cam, K&N air filter, aftermarket exhaust(Cobra, Supertrapp, ect.) If you want you can bore it out a bit... those are my ideas...but its your choice.

 

I hate to say this, but if you want to go much faster I would trade the machine off. I like mine just how it is. Its bulletproof in stock condition. Chet

 

Which bike do you have? A pipe and K&N filter (you'll have to refet), is the usual first mods. This should give a <10% increase.

 

The biggest thing you can do to upgrade drastically is, if you bore it out and put an aftermarket piston in.