Upgraditis: 9 Speed Deore Cogs

April 1, 2014

I’ve always wanted to upgrade my Aurora from 7 speed to 9 Speed Deore Cogs. The Aurora’s stock drivetrain is a 52T doppelganger crankset, 7 speed shimano cogs with a shimano tourney rear derailleur and a 7 speed shimano thumb shifter. The stock 7 speed cogs with its 14T/28T is ideal for city biking and […]

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