Originally Posted by
ironpuppy13
a 3/32" cog is universal with both sizes. i don't pay much attention when buying cogs but i thought they all came 3/32". you can use a 1/8" chain on both 1/8" and 3/32"
i just went running and am still scatter brained i hope that made sense
in a nut shell he is reccomending a 3/32 cog because it works on both chain sizes.