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 Item Specifications Color Black Weight 280 Largest Cog 34 Chain Wrap Capacity 45 Cage Length Long Drivetrain Speeds 7 Drivetrain Speeds 8 Drivetrain Speeds 9 Rear Der/Shifter Compatibility SRAM 1:1 Rear Derailleur Mount Type 10x1 Standard