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It is also optimized for BTA mounts
Its wider clamping area and shark tooth clamping (stc) provide excellent bar grip
SKU: TA2137B
these grips make it easier to ride longer with less hand fatigue on your MTB
Constructed from durable 6061 T-6 hollow aluminum
Shimano Ultegra FC-R8100 Left Crank Arm 175mm RGroup_7D890A0CA2BE0B6DA7121CEAC5BC5B9CFF079708 It is also optimized forReplace a worn left crank with the Shimano Ultegra FC R8100 Left Crank Arm 175mm, engineered to bring back the crisp, connected feel of Shimanos premium road drivetrain. This crank arm uses Hollowtech II hollow forged construction to boost stiffness and power transfer while saving weight for quicker acceleration and smoother high cadence riding. With its 175mm length, you get a longer mechanical leverage profile that can help you drive harder on
