SRAM X4 Rear Derailleur - 789 Speed Long Cage Black MFPN=HTU-512 BK } NRG Air Carbon Reinforced

} NRG Air Carbon Reinforced sole with a stiffness index of 8

Intended use: hardpack loose loose over hard medium

5mm BB Inclusion No Crank Spindle Diameter 28

14 functions (spoke wrench

SRAM X4 Rear Derailleur - 789 Speed Long Cage Black MFPN=HTU-512 BK } NRG Air Carbon ReinforcedSRAM X4 Rear Derailleur 789 Speed Long Cage Black. Affordable and reliable derailleur is great for repairs and upgrades. Compatible with 7 8 and 9 speed systems 1: 1 shifter to derailleur actuation ratio for precise light action indexing TECH SPECS Largest Cog 34 Color Black Rear Der Shifter Compatibility SRAM 1: 1 Rear Derailleur Mount Type 10x1 Standard Drivetrain Speeds 7 Drivetrain Speeds 8 Drivetrain Speeds 9 Weight 280 Chain Wrap Capacity