RD-M9250 Di2 Wireless 12-Speed Rear Mech

The new Shimano XTR RD-M9250 Di2 Wireless 12-Speed Rear Mech, optimized for impact survivability, the 12-speed mid-cage M9250 rear derailleur is the choice for both Shimano's top enduro athletes and weight-conscious XC racers alike, especially when matched with the 9-45 compact cassette. 

Featuring all-new wireless Di2 shifting, Automatic Impact Recovery, a redesigned wedge shape and 23 mm of additional ground clearance for a bash-free ride, this rear derailleur stands out for the speed of its shift and its ability to keep riders competitive on the trail.

Robust Design: A wide link structure, skid-plate design, durable carbon plate and solid pulley add robustness and longevity.

RD Protection Function: The new Automatic Impact Recovery function instantly returns the derailleur to its original position after impact.

SHIMANO SHADOW ES: A slimmer, stronger evolution of Shimano’s pioneering chain-stabilizing SHADOW concept.

Precise & Clean Wireless Shifting: Wireless Di2 paired with HYPERGLIDE+ technology result in smooth, precise and instantaneous shifting.

Wedge Shape: The new wedge shape of Shimano’s most survivable rear derailleur to-date avoids more direct impacts, and smoothly glances off rocks if there is a hit.

Protected Battery: Tucked safely inside an enclosed space, the battery won’t budge even in rough terrain, while remaining completely removable for charging.

Specifications:

• Series - XTR
• Rear speeds - 12
• Compatible chain - HG 12-speed
• Direct attachment (conventional) - Yes
• Total capacity - 36T
• Low sprocket Max. - 45T / Min. 45T
• Top sprocket Max. - 10T / Min. - 9T
• Fluoric coated link bushings - 8
• Guide pulley bearing - Sealed bearing
• Tension pulley bearing - Sealed bearing
• Teeth - 13T