Re: 400ex a-arms
Where and what type of riding do you do?
If you dont want to spend much money, put the entire thought out of your mind.
I have a set of 2" wider and 1" forward arms on my Banshee, and it was worth every penny to me. I can charge the whoops way better, corner better, transverse dunes with more stability and conquer uneven terrain with ease.
The last Dirt Wheels or 4 Wheel Action mag actually had an article of arm installation on your bike. Check it out.