Thread: Want to change rear cog—easily done?
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Old 02-16-20 | 04:32 PM
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ThermionicScott
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Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)

Just dropping the rear to 16T would get you to 64" by itself. But it looks like you have room to go up a couple teeth in front. 41/17 would get you up to 65", too.
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