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The Shimano CN-660 10-Speed Ultegra Bike Chain now features an asymmetrical (directional) chain. Shifting precision and smoothness has been significantly improved through the use of different inner and outer plate chamfers and dimensions to accommodate the different shifting requirements of moving the chain inward and outward on the drivetrain.

SKU ICN6600116I
Barcode # 4524667077114
Brand Shimano
Shipping Weight 0.3000kg
Shipping Width 0.060m
Shipping Height 0.010m
Shipping Length 0.230m
Shipping Cubic 0.000138000m3

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