Tiagra: FC-4500, 4503, 4550, 4550 CG, 4600, 4603, 4650. For Shimano Hollowtech II Left Crank Arm. Ultegra: FC-6600, 6600 A, 6601 G, 6603, 6603 A, 6604 G, 6650, 6700, 6703, 6750, 6800. Shimano Locking Plate.
Shimano HollowTech II Locking Safety Plate for Left Crank Arm - Y1FU98120 - MTB
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