NEW Shimano Deore XT M8250 1x12 Di2 Wireless Upgrade Kit Attribute 2:Band Clamp NX™ and GX™ (the cable

NX™ and GX™  (the cable pulley is riveted in place)

Model: ST-R8170

FRAME: Spearfish Carbon

Use only with linear-pull brakes

Spindle Interface Type: FSA MegaExo

NEW Shimano Deore XT M8250 1x12 Di2 Wireless Upgrade Kit Attribute 2:Band Clamp NX™ and GX™ (the cableThe Shimano XT Di2 12 Speed Upgrade Kit now provides riders with high performance wireless MTB shifting technology. The kit features an all new XT M8250 Di2 wireless rear derailleur that's optimized for impact survivability to make it the choice for both Shimano's top enduro athletes and weight conscious XC racers alike. With built in Automatic Impact Recovery, an impact deflecting shape, and simple covered pulley solutions, this derailleur stands up