Hub Technologies

Zipp’s hubsets are precision engineered to enhance the best-in-class speed, stability and stiffness of every one of our wheelsets, rim brake or disc brake. Every new Zipp wheel features a technology-rich hubset that is purpose-built for the diverse new era of road cycling.

COGNITION™

Wheel Utilized In:
808 NSW Carbon Clincher

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. But we didn’t stop there with the innovations.

Congition™ Cross Section

A star-flanged straight-pull hubshell design on the rear hub distributes the load placed on the hub flange away from the bearings for accurate bearing bores and smooth rolling bearings regardless of spoke tension. We’ve also taken care to stack the opposing spokes on each arm of the hubshell to balance the loads placed upon them. This increases the fatigue life of each arm and allows us to use less material for a lighter hub. However, rather than stack the spokes directly on top of one another, we’ve offset them slightly so that the spokes do not intersect near the spoke head or adjoining shank, where the spoke is highly stressed, thereby preventing spoke breakage.

For our front hub we’ve developed a unique scalloped edge hubshell design to prevent growth of bearing bores. This scalloped design maintains the bearing bore diameter when high radial spoke tension is applied in spite of the hub’s light weight. That means you get bearings that quietly stay in place, roll faster, last longer, and provide a laterally stiffer hub.

  • No set screw or bearing pre-load option. Bearings come precision set from the factory
  • 17mm axle
  • 10 degrees of engagement
  • Swiss ABEC 5 bearings
    Rear hub 61804 drive side
    Non drive side 61903
    Front hub 61803
Congition™ Cross Section

77/177

Wheels Utilized In:
Rim-brake versions of 202 Tubular and 202 Firecrest Carbon Clincher, 303 Firecrest Tubular and Carbon Clincher, 808 Tubular and Carbon Clincher, 30 Course Tubular and Clincher

77/177 Rear 77/177 Front

The addition of Zipp’s 77/177 hubset raises Firecrest to whole new level: Best-in-class durability and improved bearing protection with no pre-load adjustment needed.

Like the rear Cognition hub found on our NSW wheels, the 177 rear hub features a star-flanged straight-pull hubshell design on the rear hub to distribute the load placed on the hub flange away from the bearings for accurate bearing bores and smooth rolling bearings regardless of spoke tension. We’ve also taken care to stack the opposing spokes on each arm of the hubshell to balance the load. This increases the fatigue life of each arm and allows us to use less material for a lighter hub. However, rather than stack the spokes directly on top of one another, we’ve offset them slightly so that the spokes do not intersect near the spoke head or adjoining shank, where the spoke is highly stressed, thereby preventing spoke breakage.

  • Optimized hub flange geometry and spoke hole attachment pattern with Sapim® CX-Sprint spokes (CX-Ray for 202 Tubular) to optimize torsional and lateral stiffness while improving durability.
  • New robust hub shape with distinctive graphics.
  • 17mm axle.
  • For those looking for a wider gear range, or tackling especially extreme terrain, a XD driver body for 177 is sold separately and easily installed to allow for more cassette options including our wide range 10-42t cassette. The hubset is designed to swap driver bodies without the need to re-dish the wheel.

77/177D

Wheels Utilized In:
202 Firecrest Disc-brake Carbon Clincher Disc-brake, 303 Firecrest Disc-brake Tubular and Disc-brake Carbon Clincher, 30 Course Disc-brake Tubular and Clincher

Same advanced hubset as the 77/177, but for disc-brake wheel.

77/177D Rear 77/177D Front

333

Wheels Utilized In:
404 Firecrest Track Tubular, 808 Firecrest Track Tubular

Zipp’s new 333 hubset is engineered for the all out intensity and speed of the velodrome or fix-geared riding. The rear hub is optimized for single-speed performance racing with a flange design that yields equal tension on the drive and non-drive side of the wheel. This eliminates torsional deflection through the hubshell, providing immediate acceleration and flawless tracking through banked velodrome turns under power. Large bearings increase the load capacity for improved feel and durability.

333 Rear 333 Front

88/188 V10

88/188 Both

Wheels Utilized In:
404 Firestrike Tubular and Carbon Clincher

The 88/188V10 is a highly refined hubset for Zipp’s ultimate Speed Weapons, Firestrike wheels. Added torsional stiffness and smooth-rolling CeramicSpeed® bearings help you harness every watt. No bearing pre-load adjustment required.