If I was to get a 39 tooth back sprocket and a 13 tooth front sprocket what kind/size of chain would best suit me?

 

I have had great luck with DID X-Ring chains!

As far as length, there are some inexpensive chain breakers out there, so get yourself one. Then just get a chain that you know is a little to long, and cut it to length.

 

Thanks a lot. But you don't think a chain is already made for the 400ex that fits a 39/13 sprocket?

 

<div class="FTQUOTE"><begin quote>Originally posted by: 2003 400ex rider 911911

Thanks a lot. But you don't think a chain is already made for the 400ex that fits a 39/13 sprocket?</end quote></div>

Sure, you can buy chains cut to any length, but how you going to know exactly what that is???? And what happens when you get the one you thought was right, and it isn't?

It is why better to just get the chain a little long, and take a link or two out and custom fit it to your machine yourself. It's no big deal!

 

I don't have a chain breaker but I carefully grind the peen off and drive the pin out with a punch. Works great.

 

Thanks guys