Since I originally emailed, I purchased an FSA Patterson Drive and installed it on my Surly Big Dummy with an old XTR 9 speed rear derailleur (11-34) and absolutely love it. It’s great being able to drop into the low gear while stopped at stop signs, the much cleaner looking installation and that it raises the chain off the ground a bit more. I’m currently in the process of building another bike for my wife with one on it too. Thanks for the great product.
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