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  1. #1
    dvn
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    Cog for Kona Unit

    I just ordered my first SS. A Kona Unit. It comes with a 18t cog and I was thinking I might want to start out with a 20t. What type of cog do I need? I assume it's a cassette style but want to be sure before I order one. Any suggestions?

  2. #2
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    Get a Surly cassette cog.

  3. #3
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    There are many options out there. Just be sure to get one with a wide base. I prefer my HBC SS cog, or a King.

    Look at:

    Niner, Endless Bikes, Chris King, Surly

    There is a thread not to far down here in the Singlespeed section title something like "Your favorite Cog"

  4. #4
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    I'm pretty sure the stock Unit uses a singlespeed freewheel. Ride the 18t for awhile and get a White Industries ENO when you decide what you want.

  5. #5
    puts the FU in fun
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    The Unit uses a Formula DC52 per their website, which I have on one of my bikes. It is cassette-style. I like Surlys as they're wide enough not to damage the splines, but there are tons of other choices.
    Everything in moderation. Including moderation.

  6. #6
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    It uses a steel freehub body so even a cheap cog like a Dimension will work fine

    Dimension 20t Splined Cog BMX or Singlespeed : Amazon.com : Sports & Outdoors

  7. #7
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    You will need the park hcw 17 for the lock ring, but the retail on the stock cog is like $4 so even if you just bought a couple sizes to play around with your not losing much money deciding what size cog you like before buying a fancy one. The stock 32-18 is a solid gear for rolling terrain. I have a q2 pro cog on my unit with a 34-19 set up.

  8. #8
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    I just used my open ended bottom bracket tool for the lock ring. The tips fit just right to get it off and on without eating it up.

  9. #9
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    Use absolutely any cog to start out with. Once you're comfortably set on your gear ratio, swap to any of the aforementioned wide-base cogs. You won't find a decent cog that doesn't have a wide base, so don't get bogged down by all the choices.

    Surly is my go-to choice, after using the same 16t for my first three years of single speeding, then just wire-brushing the crud off of it; good as new!

    As mentioned above, this is the thread you want:
    your favorite rear cog?

  10. #10
    dvn
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    Thanks for all the responses guys. I'll ride it for a bit with the 18 and go from there.

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