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

Manufacturer's Code: FCRS520A04, FCRS520C04, FCRS520D04, FCRS520E04

Shimano RS520 Double 12 Speed Crankset

Features