best mods

[300extreme#8]

my friend has a kfx400,it is all stock,he took his baffle out for more power,he needs to know what else he can do to make it faster,he has maxxis razr tires now he just needs to make it faster

[trailburner]

Pipe,jet kit,gearing,piston & cam..........etc..etc..."where to start"

[sparks400ex101]

440

[sweet300ex]

pipe, cam, filter, high comp piston, port and polish, 450 big bore, etc etc

[4TraxRider]

First you can put the spark arestor back in, that actually makes the engine lose power on that machine I beleive. Look for a slip-on from ebay or the for-sale forum here if money is tight. Then look into a cam and high compression piston.