Vintage Shimano Dura-Ace RD-7401 Derailleur Parts Repair 6/7 Speed SIS Japan

Brand: Shimano Dura-Ace

Item: RD-7401 rear derailleur from the Dura-Ace 7400 series; road drivetrain component.

Visible markings: DURA-ACE badge; body stamped "Shimano RD-7401"; cage marked "6S-7S SIS"; pulley marked "Shimano Japan".

Compatibility: Designed for 6/7-speed SIS indexed systems.

Includes: Loose barrel adjuster and small black washer shown in photos.

Approximate weight: 210 g (per scale photo).

Construction/features: Alloy body, dual jockey wheels, limit screws, B-tension screw.

Note from photos/bag: "Barrel adjuster area has issue"—offered for parts or repair.

Sold as parts/repair due to damage at the barrel adjuster boss; adjuster is detached and threads appear compromised. Heavy cosmetic wear with scratches, scuffs, and grime on the cage and body; edge rash shown in close-ups. Unit is untested; additional service or parts may be required.