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![Shimano Dura-Ace RD-R9250 Di2 12-Speed Rear Derailleur [IRDR9250F] at BikeTiresDirect](https://static.biketiresdirect.com/productimages/images450/shppo1-5.jpg "Shimano Dura-Ace RD-R9250 Di2 12-Speed Rear Derailleur [IRDR9250F] at BikeTiresDirect")