Between three shops, it ended up that no one had the piece, so I picked up a set of Deore brake arms for about $20. I probably should've asked the place I got the bike from about covering it since the bike is less than a year old, but it was a relatively small cost and I didn't really care. Hopefully the Shimano stuff is a little better than the Promax that came stock.
Doesn't Promax focus on the BMX market anyway?
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