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Shimano/Sram - 11spd, For Gen 1 Hub
Shimano/Sram - 11spd, For Gen 1 Hub
Shimano/Sram - 11spd, For Gen 2 Hub
Campagnolo - 11spd
Sram XD Driver - 11/12spd
Sram XDR - 11/12sp - Gen 2 Hub

Zipp Cognition NSW Freehub Kit

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$119.99
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The Zipp Cognition NSW Freehub Kit is the ultimate in Zipp hub technology. Every time a conventional hubset starts to coast, friction within the freehub ratchet mechanism works like a drum brake to slow the rider down. The drag between hub shell and driverbody during coasting is considered as efficiency loss, especially for road wheels. High drag also can significantly contribute to chain-dropping issues. The drag torque drives the cassette clockwise so the chain gets loose on the load side.

The solution? The rear Cognition™ hub with AxialClutch™ technology reduces drag by disengaging the ratchet mechanism when coasting. It then uses magnets to re-engaged once the rider starts pedaling.

Includes pre installed bearings and freehub seal.

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Reviewed 7/26/2018
by Anonymous
Overall Rating
1 of 1 customers found this review helpful.
Easy to replace

My 303 NSW wheel set was for Campy and I needed SRAMShimano. I bought the Zipp freehub kit, but dont forget to get the SRAMShimano axle end cap, too. I would have given it 5 stars if BTD.com would have told me I needed it.

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