Sram Rear Derailleur X01 Type 2.1 Black

Thanks to its "horizontal parallelogram" design x-horizon™ can keep the chain gap the same across all 11 gears. By taking vertical movement out of the equation this design doesn't just make shifting faster-it reduces shift force and eliminates ghost shifting. Roller bearing clutch™ technology reduces bounce and chain slap. Cage lock™ technology makes wheel removal and installation easier than ever before. Paired with the x01(R) shifter the x-horizon&trade rear derailleur forms the backbone of x-actuation™ technology: the key to totally smooth shifting action. - speed (rd): 11s - cable pull ratio: x-actuation - cage (rd): n/a - max tooth: 42 - color (rd): black red - pulley bearings material: steel - cage material (rd): carbon