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Sram Rear Derailleur Sx Eagle Aluminum 12 Speed Black A1


2 in stock

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SKU: RD8155000 Categories: , . Tag: . Brands: .


Designed to handle whatever you can throw at it. Polished aluminum crankarms and the DUB bottom bracket system mean the Rival crankset will keep spinning, no matter what. Elegant and secure direct-mount X-SYNC chainrings from the company that pioneered the 1x drivetrain for the ultimate in consistent chain control over the long haul.


  • Direct mount chainrings in 38t through 46t
  • DUB™ bottom bracket adds durability and simplicity
  • Wide chainline crankset to fit the biggest gravel tires
  • Longer DUB crank spindle accommodates both Road and MTB width frame bottom bracket standards for unmatched cross-compatibility across brands
  • Compatible with 135, 142 and Boost rear spacing

Speeds: 12
BB Compatibility: All SRAM Road WIDE DUB BBs
Chainring Size: 40T
Crank arm length: 172.5mm
Chainline: 47.5mm
BB Spindle Interface: DUB
Chainring material: Aluminum
Guard: No Guard
Bolt Circle Diameter (BCD): Direct Mount (DM)
Crank arm material: Aluminum
Color (Crank arm): Black