SRAM X5 Rear Derailleur - 9 Speed Long Cage Black 11.5015.021.120 you can transfer the spindle

you can transfer the spindle between Rally RK/Rally RS pedal body kits (sold separately)

Solo Air spring

capacity 793 cu in (13L) weight 500g

Chain Connection Type Reusable Master Link Color Neo Chrome Defined Color Multi-Color Drivetrain Speeds Single Speed 1/2" x 1/8" Half Link Chain No Links (links) 112

6 Primary Color Black

SRAM X5 Rear Derailleur - 9 Speed Long Cage Black 11.5015.021.120 you can transfer the spindleSRAM X5 Rear Derailleur 9 Speed Long Cage Black. Affordable and reliable derailleur is great for repairs and upgrades. TECH SPECS Rear Derailleur Mount Type 10x1 Standard Rear Der Shifter Compatibility SRAM 1: 1 Cage Length Long Drivetrain Speeds 9 Weight 299 Color Black Chain Wrap Capacity (teeth) 45 Largest Cog 34