Originally Posted by ssslither
As mentioned above, contact Laurie @ CCM. They're going to want to know what style detent you have; nub or oring. I just received a new top tube for my 1st batch T2 (nub style detent, serial # <40) so they should be able to help you as well. Keep in mind that you'll need a Torx T15 (I believe) driver to remove the top tube unless they changed the fastener type after mine was built.
I have a newer model and it still requires the Torx.. You can buy those from CCM as well