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One of the coolest things about Surly is if they can't find an existing part that fits their standards, they just make one themselves. This cable hanger is made to fit around the oversize bolt on their Constrictor seatpost clamp so you can be sure it will fit around almost any other seatpost clamp bolt too. It comes complete with an adjusting barrel.

Turn your geared bike into a singlespeed machine with Surly's Singleator. The Singleator mounts to your derailleur hanger and provides a smooth, quiet and adjustable means of tensioning the excess chain slack on any bike. It's made from strong forged steel and features a triple-sealed spring, large-cog capacity, chain guides, fully-adjustable chain line, floating pulley, and a stainless-steel pivot bushing. And, it works with both BMX and standard chains.

If you've got rear-facing horizontal dropouts and you don't want your chain to slip when your rear wheel pulls forward, then Surly's got you covered. The Tuggnut is made from investment-cast stainless steel and it'll hold your wheel in place. Plus, it comes with an adapter for quick release axles and features an integrated bottle opener.