SRAM X3 Rear Derailleur - 789 Speed Long Cage Black Lubricants 128721-Q0-L

128721-Q0-L

Manufacturer Part Number: 039-03-004

134116-Q0-L

- Pair/set (1 caliper): left and right pads with retraction spring

3 to 6 hour run time per charge

SRAM X3 Rear Derailleur - 789 Speed Long Cage Black Lubricants 128721-Q0-LAffordable and reliable derailleur is great for repairs and upgrades. Will work with 7, 8 or 9 speed cassettes, depending on the shifter used 1: 1 shifter to derailleur actuation ratio for precise light action indexing Product Specifics Rear Derailleur Mount Type: 10x1 Standard Rear Der Shifter Compatibility: SRAM 1: 1 Cage Length: Long Drivetrain Speeds: 7 Drivetrain Speeds: 8 Drivetrain Speeds: 9 Weight: 272 Color: Black Chain Wrap Capacity (teeth):