...and it's orange too! I didn't want to spend $100 on a sprocket I wasn't sure I was even going to like.

http://www.amazon.com/gp/product/B00DGF3SCS/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1

Got it 3 days after I ordered it. Piece of junk? I'll find out once I get my longer chain. But it feels like it's built OK and it definitely fits the wheel! I dumbly assumed my axle block was oriented from the factory to be flipped and accommodate a longer chain - not true in my case, for whatever reason.

Anyway, the sprocket seems very well constructed, light, and it comes with its own mounting hardware (including nylocks). I'll report back if it disintegrates. I hope it'll last a little longer than half a Supersprox, since it costs about half what a Supersprox costs. Lemme know if you've heard of the brand, horror stories...or anything like that.

To finish this conversation with myself...

I counted 114 links in the chain, so I am making a strong guess that increasing the rear sprocket size with this chain is not going to work.