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Sweep the leg!
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I've got a range of Surly cogs I use on my King which has the aluminum freehub body. I love'em.

Our cassette-type cogs are designed to fit on standard Shimano compatible freehub bodies. These cogs have a tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters. In addition to being a stellar SS cog, the cog base width (where it contacts the freehub body) is 4.35mm, so you can stack a few of them up and use a 9-speed shifter for a simplified multi-speed drivetrain. This width also prevents it from ruining the freehub body as a result of digging grooves into it like skinny stamped cogs have a tendency to do. Surly cogs are machined from SCM415 CroMoly steel, then heat-treated for toughness and chrome-plated for surface hardening and enhanced chain lubricity. Our cogs will work with 6-9-speed 3/32" chains, although we recommend the inherently updated quality of an 8 or 9 speed chain. They are also available in every increment from 13-22t, so you can select that perfect gear.
As for a spacer, there's a spacer which has the ability to change widths as it is two pieces threaded into each other. A buddy has one on his El Mariachi but I don't remember the brand.
 

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Hoopy Frood
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255 Posts
Caffeine Powered said:
As for a spacer, there's a spacer which has the ability to change widths as it is two pieces threaded into each other. A buddy has one on his El Mariachi but I don't remember the brand.
It might be this one from Rennen:

http://www.rennendesigngroup.com/Spacer_Kit_Desc.htm

That's what I use with my Surly cog and it works great (although I don't use King hubs).

- khill
 
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