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Wells used a Surly singlespeed conversion kit to run his Stan's wheels. The orientations of the
Happy Earth, India on Twitter: "The single speed spacer kit from @surlybikes allows you to run a splined single speed cog on a cassette hub. Hub shown here is our home brand
Surly Surly OD Crank Single Speed Spacer Kit - Ray's Bike Shop | Midland, Clare, and Bay City, MI