Those carbon ones look good. I wish I new about them before I tried the ones off Ebay.
In Review of the ones off Ebay
http://cgi.ebay.com/Traxxas-E-T-Maxx...QQcmdZViewItem
I have beat these to heck for the last week. In the last week I have broke almost EVERY part on my Emaxx but these did not bend or break. Believe me I beat the truck hard. I am very please so far with the ebay ones.
Dan.