SRAM X4 Rear Derailleur - 789 Speed Long Cage Black CheckoutSpec= Single Ring Alloy Outer Chainring

Alloy Outer Chainring

SRAM Model ID: AC-LCK-DH-A1

Narrow Q-factor – 145

Fits 20" to 26" wheel bike

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SRAM X4 Rear Derailleur - 789 Speed Long Cage Black CheckoutSpec= Single Ring Alloy Outer ChainringSRAM 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