Shimano Deore XT Di2 RD-M8250-SGS Long Cage Rear Derailleur 12 Speed CASSONS works with all GoPro HERO

works with all GoPro HERO Original

Shifters: Shimano Ultegra Di2

Including dust wipers & 4mm foam rings

and efficiency

the Run Bra is finished with our signature racing stripe elastic band

Shimano Deore XT Di2 RD-M8250-SGS Long Cage Rear Derailleur 12 Speed CASSONS works with all GoPro HEROThe all new DEORE XT M8250 long cage derailleur paired with a standard 10 51T M8200 cassette gives all types of riders the range and robustness to tackle every trail on the mountain. With built in Automatic Impact Recovery, a new, impact deflecting wedge shape, and simple covered pulley solutions, this derailleur stands up to harsh trail impacts and still retains its lightning quick shifting speed and high level of performance. Specifications Robust