Brand new in box - Dura-Ace chainsets normally retail for approx £400 175mm cranks - 52 / 36 chainrings (outer is marked 11 speed, but it is exactly the same as 12 speed, inner marked 12 speed) Both chainrings are compatible with 11 speed This is the warranty replacement item for 9000 / R9100 11 speed chainsets Great way of upgrading your existing 11 speed setup and updating to the look of the current 12 speed groupset
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