SRAM XX1 Rear Derailleur - 11 Speed Medium Cage Black MPFN-11.5378.803.002 Featuring forged aluminum arms and

Featuring forged aluminum arms and SRAM's X-Glide chainrings this crankset is hits the sweet spot between weight durability and performance

MagnetiXchange system allows easy pad changes

Stealthamajig Disc Brake Hose Fitting KitFittings are backwards compatible with older SRAM and Avid hydraulic brakes

Defined Color Gold Bottom Bracket Shell I

SRAM XX1 Rear Derailleur - 11 Speed Medium Cage Black MPFN-11.5378.803.002 Featuring forged aluminum arms andSRAM 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 chain control by fitting inner and outer chain links perfectly X Horizon design maintains constant chain gap across all gears and eliminates ghost shifting Roller bearing clutch eliminates derailleur