You wouldn’t expect anything less than unbeatable performance from Shimano, the leading company in their field, & this 2-piece cap-free design Tiagra chainset does not disappoint. Shimano have taken many features from their pro-level equipment. With SG-X chainrings featuring strategically placed chain pick-up pins & tooth profiles, this chainset allows for fast & positive shifting. It is super lightweight & stiffer than traditional bottom brackets & also super easy to install.