I want to put as much 400ex parts on my 300ex the only thing i am sure i can put on it is the a-arms. Then i have heard that the rear plastic, swing arm, tie rod end, and shocks fit. My freind has a broken shock in the front and there are more 400ex shocks on e-bay then 300ex.

 

some people run the 400ex carbs on their 300ex. i have 400ex front shocks if you want those. i am not sure if they fit good or not.

 

i used to have a 300ex and the shocks are similar to the 400, id try swapping them first and if they dont fit then dump em