SRAM X01 Type 2.1 1x11 Speed Rear Derailleur - 11 Speed Exclusive the master cylinder is easy

the master cylinder is easy to install on the handlebars without having to remove any other components

Magnetised case

Level series (except Level TLM and Ultimate)

Mineral Oil

10-52t: ~452g

SRAM X01 Type 2.1 1x11 Speed Rear Derailleur - 11 Speed Exclusive the master cylinder is easyPulling all the good bits of technology from it's big brother (SRAM XX1) the X01 derailleur offers serious punch at a more budget concious price. Sporting the same genius X HORIZON parrallelogram design to eliminate ghost shifting and ROLLER BEARING CLUTCH to hold the chain tight an reduce chain slap. The main differences between the XX1 and the X01 are: Standard sealed bearings in the jockey wheel on X01, Ceramic Hybrid in the XX1. Stainless steel