SRAM X4 Rear Derailleur - 789 Speed Long Cage Black MFPN=00.6218.015.005 Carbon & Titanium: flex-tuned shell

Carbon & Titanium: flex-tuned shell and DNA padding

Holds wheelbases up to 47" and tires as large as 3" width

YKK® zippers and 4-way stretch

Power every ride with the SRAM Rival AXS Wide Power Meter Crankset

T165x45mmRims Syncros X-30SE

SRAM X4 Rear Derailleur - 789 Speed Long Cage Black MFPN=00.6218.015.005 Carbon & Titanium: flex-tuned shellSRAM 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