Shimano XTR RD-M9250-SGS-C Di2 Wireless Rear Derailleur - 12-Speed, Long Cage, Shadow ES, Black/Gray Black/Silver EA Rear Derailleur

IRDM9250SGSC Shimano Shimano XTR RD-M9250-SGS-C Di2 Wireless Rear Derailleur - 12-Speed, Long Cage, Shadow ES, Black/Gray Rear Derailleur EA Black/Silver Largest Cog 51 Rear Der/Shifter Compatibility Shimano Mountain Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Drivetrain Speeds 12 Chain Wrap Capacity (teeth) 41 Cage Length Long Color Black/Silver Weight 391