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Shimano Sora FC-3550 9 Speed Crankset 50/34t: New Gear Combinations adds Versatility to SORA. For the entry level enthusiast Shimano offers the sora crankset with some of the same technology as found in their high end line of products.
Specs & Information
This crank set is a double crank set for 9 speed drivetrains, 50 tooth big ring and a 34T small ring with a 170mm crank arm length.