Smooth, smart shifting upgradeThe Shimano Deore M6250 Di2 kit brings electronic precision shifting to your MTB or e-MTB.Electronic upgrade kit for precise Deore Di2 shifting.Includes RD-M6250-SGS long-cage rear derailleur, optimized for 12-speed, 10-51t cassette pairingIncludes tunable Deore SW-M6250 band-clamp wireless shifterIncludes BT-DN320 derailleur battery and EC-DN100 chargerBrings Di2 electronic shifting to Deore setupsSmooth, reliable gear changes every timeCompatible with MTB and e-MTB drivetrains