Shimano Ultegra FC-R8100 Crankset - 165mm | 52/36t Bearings Like all Wheels Manufacturing derailleur

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Shimano Ultegra FC-R8100 Crankset - 165mm | 52/36t Bearings Like all Wheels Manufacturing derailleurWho Should Choose the Shimano Ultegra FC R8100 165mm Crankset? The Shimano Ultegra FC R8100 in 165mm arm length is the same 12 speed road crankset built on Hollowtech II with hollow forged crank arms and a Hollowglide outer chainring the key difference is the shorter 165mm arm length that Shimano introduced for the R8100 generation to serve smaller riders, triathletes, and cyclists who have moved to shorter cranks for biomechanical or comfort reasons.