Perfect running SHIMANO / SENSAH shift system alloy stainless steel material, Good quality and nice price is your best choice for changing 8-speed 40T 42T 46T we tested the SHIMAN0 TX35 rear controller, which can run the 8 S-46T flywheel perfect, other controllers must use the extension tail hook 9-speed 42T 46 T 50 T requires extension tail hook 10-speed 46 T 50 T can run with M6000 GS, other models need extended tail hook 11-speed 46 T 50 T 52 T 12-speed 46 T 50 T 52 T Only applicable to single disc transmission system, some need to increase the use of extension tail hook only for single disc transfer system.


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