We're sorry to hear that your shock cord on your Half Dome 2 tent is failing. We do not sell replacement tent poles, however we do have a couple of options for you. For tent pole repair, we recommend Tent Pole Technologies. You can find their information on our REI Repair Services page. Additionally, if you're interested in doing the repair yourself, we've had a couple of conversations about this topic here in the community. We encourage you to check out Replacement Shock Cord for Half Dome 2. There are a couple of other conversations mentioned there that can provide some more information.
Hopefully this helps, thanks!
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