SRAM XX1 Rear Derailleur - 11 Speed Medium Cage Black. Professional grade derailleur built with carbon fiber and aluminum featuring roller clutch pulley cage and cage lock feature for easy wheel installation.Wide-tooth narrow-tooth pulley wheel maximizes c
SRAM XX1 Rear Derailleur – 11 Speed Medium Cage Black. Professional grade derailleur built with carbon fiber and aluminum featuring roller clutch pulley cage and cage lock feature for easy wheel installation.
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