Experience the unbeatable performance promised by this pro-level kit. Showcasing a 2-piece cap-free design, this allows a quick and easy installation whilst delivering a lighter feel compared to the traditional crank/bottom bracket assembly. If you need quick and positive shifting, then the SG-X chainrings with its pick-up pins and tooth profiles will be right up your street - with other benefits. Anyone using this chainset will instantly benefit from quieter running as well as a smoother shifting directional chain - bringing an improved power that is worthy of the Tiagra standard.

• Anodised aluminium crank arms 
• Compatibility with 10-speed Super Narrow HG chains 
• Developed to work with HollowTech II type bottom bracket cups. 
• Lightweight aluminium chainrings  
• Crank arm length: 170mm
• BCD (mm): 130mm
• Tooth range: 52T / 39T
• Weight: 943g