Shimano Ultegra RD-6800 Di2 RD-6870 Rear Derailleur B-Axle Assembly

Shimano rear derailleur B-axle assembly for Ultegra RD-6800 & Ultegra Di2 RD-6870 Type Rear Derailleur B-Axle Assembly Brand Shimano MPN Y5YC98010 UPC 689228398467 Part Type Bicycle part .

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