Vintage Shimano RX100 rear derailleur model RD-A551, LONG cage unit in silver finish.

Classic bolt-on design for standard derailleur hanger dropouts, with aluminum body and steel hardware.

Markings include "Shimano RX100" on the outer link and "RD-A551 VIA JAPAN" on the inner body.

Set includes the rear derailleur only, as pictured, with integral mounting bolt and barrel adjuster.

Weight: 285 g.