After a bunch of net searching I ended up with the Matris damper. It's a side mount that utilizes the stock fastener on the frame, and then fastens to the fork tube. It's easily adjustable on the fly and works as advertised. I bought it from www.kneedraggers.com as they had the best price on it. I checked out the Hyperpro at a demo booth while I was at Laguna Seca. It seems to be an excellent product as well.
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