ROTOR BCD110X4 Round Chainrings 圓齒環 -適用於 ALDHU 3D+ SHIMANO FC-R9100 及FC-R8000

原價:$810

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商品說明

Rotor poured all of  the experience in oval Q RINGS development into producing an innovative Round Chainrings solution. Machine CNC’d from ultralight aeronautic-grade 7055 aluminum, the new look 4-arm chainrings are compatible with our lightweight ALDHU 3D+ crankset as well as all Shimano®.

4 bolt cranks. Combined with our new ALDHU 3D+ spider and crankset, the clever spline interface between the axle delivers a robust yet smooth engagement allowing you to maximise the efficiency in transmission of power in your pedal rotation.

 

* Spider not included

 

Weight: 133 g for a 52/36

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