The Rival chain is lighter, resistant and even more durable. Flattop technology guarantees a more silent and resistant chain for long pedaling and countless gear changes. The Force chain is compatible with 12 -speed racing boxes and 13 -speed racing boxes. - Flattop technology allows a closer chain with a more silent operation and greater resistance and duration The Rival Chain is Lighter, Resistant and Even More Durable. Flattop Technology Guarantees in More Silent and Resistant Chain for Long Pedaling and Countless Gear Changes. The Force Chain is Compatible with 12 -Speed Racing Boxes and 13 -Speed Racing Boxes and Characteristics. Powerlock, Each Powerlock Should Be Used Only Once. -Compatible with 12 -Speed Racing Bike Groups and Xplr -Axs Racing Bike Groups at 13 Speed All.
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