Shimano Alivio RD-M4000 Inner Plate - SGS Cage - Y5P910000

Shimano Alivio RD-M4000 9 speed rear derailleur Inner Plate.

The following are an "A" match which indicates that the parts are the same in materials, appearance, finish & size etc.

- Shimano Alivio RD-M3100-SGS
- Shimano Acera RD-M3000-SGS
- Shimano Altus RD-M2000-SGS

The following are a "B" match which indicates that the parts are usable, but differ in materials, appearance, finish & size etc.

- Shimano Deore RD-M592-SGS
- Shimano Alivio RD-M430-SGS
- Shimano Acera RD-M390-SGS

- Centre to centre measurement between jockey wheels: 100mm

Genuine Shimano replacement part.