The Shimano 105 FC-RS520 is a 2-piece, 4-arm crank that's compatible with modern disc brake road frames.
  - 4-arm crankset for 12-speed drivetrain
 - Compatible with frames of O.L.D. 135mm and 410mm chainstay length
 - 44.5mm chainline
 - 150mm Q-factor
 - Compatible with HG 12-speed chains
 - BB Included: No
 - Chainline/Hub Compatibility: 135/142 Road Disc Hubs > 415 mm Chainstay
 - Chainring BCD: 110 Shimano Asymmetric
 - Color: Black
 - Crank Intended Use: Road
 - Crank Length (mm): 170
 - Defined Color: Black
 - Drivetrain Speeds: 12
 - Number of Chainrings: Double
 - Pedal Spindle: 9/16"
 - Rings: 50/34
 - Spindle Interface Type: Shimano Hollowtech II
 - keyword search: 105
 

  
