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Chris King ISO B Rear Hub (Boost)

Chris King ISO B Rear Hub (Boost)
Chris King ISO Boost Rear Hub with XD Driver for SRAM 1x11-Wheelbuilder.com

The Chris King ISO B (Boost) rear mountain bike hub is a completely new hub shell with wider spaced flanges for more symmetric wheel builds. This hub utilizes the patented and proven Chris King RingDrive engagement mechanism, which uses 72 teeth on each drive ring for quick engagement. This unique drive mechanism is the source of the distinctive Chris King "angry bee" freewheel sound.

All Chris King hubs use proprietary angular contact stainless steel bearings that feature lightweight low-friction seals which offer excellent protection against water and dust intrusion. All bearings are produced in-house by King Cycling and are hand checked before installation. Ceramic bearings built to the same high quality standards are available as an upgrade.

Most mountain bike manufacturers are adopting Boost spacing as a standard for all wheel sizes. Boost compatible bikes are defined by 110 x 15mm front axle and 148 x 12mm rear axle dimensions. Boost hubs are not backward compatible with 100mm front forks or 142mm rear triangles.

Technical Information:

  • Weight: 341g +/-5% (Shimano freehub), 367g +/-5%  (SRAM XD freehub), 337g +/-5% (ceramic)
  • Hole count: 28, 32
  • Drivetrain notes:
    • XD driver is available
    • Not compatible with 11-speed road
  • Bearings: Chris King proprietary stainless steel
  • Axle notes: 148 x 12mm TA only
  • Available in 9 colors. Colors may vary slightly between your computer monitor display and the actual product. Colors may vary batch to batch from Chris King (If you order a hubset we will make sure the front and rear hubs match)
  • Wheel building dimensions:
    • Left Flange Diameter: 57.4mm
    • Right Flange Diameter: 57.4mm
    • Center to Left Flange: 36.3mm
    • Center to Right Flange: 24mm

Additional Information:

  • Fully user adjustable axle end play
  • 5-year manufacturer warranty
  • 100% engineered, manufactured and assembled in Portland, Oregon

Inventory Note: We stock a wide variety of Chris King hubs, however our inventory fluctuates daily. We may need to order hubs with an average lead time of 2-7 business days. Some hubs may take longer. If your order is time sensitive we encourage you to contact us for up to the minute product availability and shipping lead times.


  • Replacement bearings: Chris King proprietary stainless steel
Details
Product Weight (g) 341g
Our price: $460.00
Options
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Drivetrain
Bearing upgrade
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