Home / Shimano 105 FC-RS520 double 12-speed chainset; 170 mm 50 / 34T; black
  • Shimano 105 FC-RS520 double 12-speed chainset; 170 mm 50 / 34T; black - Nsnoe
  • Shimano 105 FC-RS520 double 12-speed chainset; 170 mm 50 / 34T; black - Nsnoe

Shimano 105 FC-RS520 double 12-speed chainset; 170 mm 50 / 34T; black

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  • Detail
    • Lightweight 12-speed 2-piece design chainset
    • Innovative forged and anodised aluminium crank arms for minimum flex
    • The chainring teeth have been developed to work in conjunction with Hyperglide&plus 12-speed chains for increased contact to provide greater efficiency and improved power transfer
    • 2-piece design bottom bracket bearings to be spaced wider apart; enabling the use of larger bearings and an increased axle diameter
    • Can be used with Shimano external or press-fit bottom brackets
    • The system allows for easier installation; adjustment; and maintenance
    • Lightweight anodised aluminium chainrings for smooth and precise shifting
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