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The Box Three chain is polished and then chemically treated to achieve corrosion resistance.
All Prime 9 chains have chamfered shifting edges, solid plates and solid pins to safeguard durability.
Box unique inner link spacing is engineered to grab those modern wide/narrow chainrings.
Box chose to modernize the 9-speed platform due to the chain's spirited reputation.

They also work well with BMX 3/32" Chainrings and Cogs.

Box Three Prime Nine Chain

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