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Shimano Dura-Ace Di2 RD-7970 B-Axle Assembly - Y5X298010

£22.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
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This B-Axle Assembly can only be used with Shimano Dura-Ace Di2 RD-7970 rear derailleurs.

Genuine Shimano replacement part.
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good evening is this spare part compatible with the Ultegra Di2 6770 series?
20 Apr 2019
- SHIMANO spare part Y-5X298010, RD-7970 B-AXLE ASSEMBLY || Shimano Code: Y5X298010
Hi, I think not as a kit but some parts may be. There is no Shimano reference for this. Thanks. 24/04/2019