The Deore M7200 12-speed mechanical rear derailleur carries forward all the new technology of the XT M8200 but utilizes a strong steel pulley cage in its long-cage construction. This adds nominal weight but also ups durability of an already-robust structure. The derailleur&';s wide link structure adds strength and its wedge-shaped design helps dodge impacts on the trail.Shadow ES design provides a slimmer stronger evolution of Shimano&&';;s pioneering chain-stabilizing Shadow conceptWedge-Shaped Design is made to move out of the way to absorb trail impacts for a worry-free rideSteel pulley cage adds extra strength and durability to the design13t upper and lower pulleysPair with the HyperGlide+ 12-speed 10-51t cassette and Deore M6200 shifter for a stout reliable fast-shifting drivetrain suitable for all trail rides (cassette and shifter sold separately) TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Largest Cog 51 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type Shimano Rear Direct Mount Drivetrain Speeds 12 Chain Wrap Capacity (teeth) 41 Cage Length Long Color Gray/Black Weight 439