Does anyone know if they produced a 17t rear cog? Currently riding 50-16, and would like to lighten up a bit as my old age creeps in. Thanks for the help!

16 is the biggest DA cog.

I don't believe so...16t was the largest... The first generation track group(not 10 pitch) had an aluminum cog in 17 but 10 pitch was 16t largest

Just have to tough it out here then, unless a smaller chainring might show up.

Thanks for the information.

You might want to try re-posting on the Track Riding Forum and also the Classic & Vintage Forum.

I believe they made down to 48 chainrings. just keep your eyes peeled.

Thanks, I live in Japan, and the 10 pitch parts show up here at the auction, except the chain, which took me about three years to acquire at an affordable price, after I started hunting for one. Very difficult to find the chain....