With features from Shimano's pro-level Road chainsets, this 2-piece Hollowtech II Tiagra chainset offers unbeatable value and performance in several models: 4500, 4503, 4550 and R600.
Features: based on the same system as found on the top end Dura-Ace chainset. Improved looks, stiffness, performance, weight saving and serviceability. Designed to work with Shimano's latest Hollowtech II cupsets. Shimano's lightweight aluminium SG-X chainrings feature strategically placed chain pick-up pins and tooth profiles to ensure fast and positive shifting even under load. They will run with either 9 or 10 speed chains making this a suitable first upgrade from the previous version. Available in 170 or 175mm with 53/39 chainrings in a 130PCD fitment.
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