Shimano 105 FC-RS520 12-Speed Double Chainset

Lightweight 12-speed 2-piece design chainset.

This 2-piece crank uses an outboard, 24 mm bottom bracket and features 2x12 speed 50-34T chainrings. It uses a 4-arm construction and is compatible with modern disc brake road frames.

Technology

2-Piece Crankset

Integrated crank arm and bottom bracket

Increased rigidity with less weight.

Wider bearing positioning

Rigidity is enhanced and pedaling force is efficiently transmitted.

Precision Bearings

Low maintenance and simplified installation.

Features

• Innovative forged and anodised aluminium crank arms for minimum flex
• The chainring teeth have been developed to work in conjunction with Hyperglide+ 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

Specification

• Compatible Chain: HG 12-speed
• Q-Factor: 150mm
• Chainline: 44.5mm
• PCD: 110mm