The X110 chainrings are compatible with the Shimano Dura Ace 9000/R9100, Ultegra 6800/8000 and 105 5800/R7000 11 speed chainsets._x000D__x000D_
For complete compatibility you must replace both inner and outer with TA rings._x000D_
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Please note: these chainrings are designed to be compatible with the modern chainsets that have a cutout on one arm, they are also backwards compatible with the earlier chainsets that do not have the cutout._x000D_
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Features & Information_x000D_
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* Material: 7075 T6 Aluminium, _x000D_
* Unique PCD: 110mm 4 arms._x000D_
* Outer : 48, 49, 50, 51, 52, 53 teeth._x000D_
* Inner : 33, 34, 36, 38, 39, 42 teeth._x000D_
* Colour : Black.
