Hello,Honda mod-masters!!

I am getting the parts together to put 400ex a arms on my son's 300ex,I know most is a bolt up,but the top shock mount will need to be fabbed,or is there a kit out to adapt the top mount? I am also getting the brake lines and tie rods for the longer arms,are there any other things I need,or need to look out for?
Thanks for any info on this subject.

 

I did this with my 300ex. The A-arms bolt right up. 400ex shocks will not work though. Just trust me on that one. What you will have to do is eventually but some works shocks for +2 extended a-arms for the 300ex. That is what I did. If you do put the 400ex shocks on, then your front end will sit up REALLY high. The 300ex shocks do work but your quad will tilt forward a tiny bit but overall they work just about the same as they did with stock 300 a-arms. Another thing is, if you do eventually get the works shocks it will take some width away. So in the end of all this I only gained about +1 inch on each side.

 

The reason your front end sat up so high with the 400ex shocks,did you use the same top mount on the 300? From what I have heard,you must move the mount for the top higher to keep the frame geometry right,and you should be able to keep the 2" width the 400ex arms provide. I remember reading a post on this a long time ago,but can't remember whether the top mounts were fabbed,or if there is a kit available for the installation. All the info I read they used 400ex shocks with no problems.