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Item # SRY0014

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Item # SRY0014

You really only need one gear.

Go ahead and use the Surly Single-Speed Kit to convert your freehub cassette body into a one-gear hurt-machine. Remove your old cassette, slide on spacers, cog and lockring and your whip is now a single speed.

  • Shimano Freehub body compatible
  • Anodized aluminum spacers come in different widths
  • Large stainless steel lockring
  • Kit does not include cog

Tech Specs

anodized aluminum, stainless steel
Recommended Use:
singlespeed conversion

Reviews & Community


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Here's what others have to say...

Avg. ride time: 2h 44m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Dial It In

    This kit works great to rid yourself of all those pesky gears and cables and to dial in that chainline. Well done Surly.


    So stoked Backcountry has these!

      I'm pretty obsessed with getting the right single speed gear for cross racing. I use Chris King cogs and am constantly battling my brake pad alignment, chain tension and tire clearance. I use two Surly tug nuts since I don't have a dedicated single speed hub and have to use a DT Swiss RWS QR. Two tools you will need in addition to the Surly Single Speed kit are a chain whip and a crombie tool. Here is a link to instructions on how to achieve a proper chain line:
      This kit comes complete with a lock ring.


      It's the right thing to do

      • Familiarity:I've put it through the wringer

      While I like seeing the shift from triple to double and now single front rings (seat tube derailleurs make me gag), I'm not sure what to think of the increasing number of "standard" rings spinning on the back half. I had a nightmare the other day about a 1/37 set up with a 101 tooth low gear. Stop the madness, throw your cassette in the trash and sore a set of these......and a 20 tooth single.


      Single Speedin'

      • Familiarity:I've put it through the wringer

      When I decided to build up a new single speed cross bike this year, I had a few options for spacer kits. Knowing that I was going to be running a Surly cog, it made perfect sense for me to just stick with the brand that is notorious for their SS rig setups.

      It was a super easy installation- well, once you get your chain line perfectly micro adjusted (gimme that 17 minutes of my life back!#@$), and then you're off pedalin'

      The only drawback I would say is its price, as it's about 10 to 15 bucks more than the other options out there.


      Great Product Surly

      • Familiarity:I've put it through the wringer

      I'm Building a single speed and needing to remove the cogs from a 10 cassette adding a new single speed 17 cog. The Surly spacer kit is awesome. This kit is a no brainier being the instruction make it pretty simple to figure out what spacer go were for the proper alignment.

      Responded on

      Samboni, please be careful you should never use a cog from a cassette as it has ramps and good chance it will "throw" your chain.