Nothing to complain about. Fits on new and old 3-splined Sturmey-Archer hubs, of course. This is a good choice for a vintage 3-speed (which most likely comes with a 46 tooth front chain ring). A 46/20 gear ratio makes Ann Arbor hills less harsh for me and I can still keep up with 25 mph traffic on my heavy old Raleighs and Schwinns. For those with a 48 tooth chain ring, a 21 tooth would give equivalent performance.
This is a real Sturmey-Archer cog, to suit 3 speed hubs like the AW. It seems to me that since being acquired by Sunrace, Sturmey-Archer components have improved in quality, and are quite reasonably priced. I bought this to change the ratios on an old Columbia Sport-3 that I use as a commuter. Having parts support for 100 year old internal gear hub designs is amazing! Thanks, Sunrace, for keeping Sturmey-Archer alive.
This is the cog that works best with my kickshift hub and 39t chainwheel in my rolling neighborhood. These cogs are cheap and available in many sizes. Learn how easy it is to change them. Changing chainwheels is expensive. Get a chainbreaker tool and you're set.
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