SHIMANO SLX M7100 1x12v Groupset Shifter Rear Derailleur 12 speed 10-45T/51T Cassette Sprocket Chain 124L for MTB Bike Original SHIMANO SLX M7100 1x12v Groupset Shifter Rear Derailleur 12 speed 10-45T/51T Cassette Sprocket Chain 124L for MTB Bike Original. Sale price : $183.11 Category : Sports & Entertainment