Chris King

Chris King ISO B Front Hub

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Chris King hubs are known for innovative bearing and gearbox designs, exceptional durability, and for their brilliant jewel quality anodized colors and finishes. 

The ISO B front hub uses wider spaced flanges, taking advantage of Boost geometry to increase wheel stiffness. The ISO B has the most robust axle offerings in the King line, covering everything from 100mm QR to 110x15mm Boost configurations.  

King hubs control flex by adopting an oversize axle diameter made possible with the use of proprietary bearings. Bearings are available in steel and ceramic for most models. Races are manufactured from heat-treated, surgical grade steel that are machined simultaneously, with tools of equal wear to ensure perfectly matched inner and outer races. As Chris King bearing races burnish they get faster with age. 

Hubs are fully serviceable for many years of demanding use. All Chris King products are 100% engineered, manufactured and assembled in Portland Oregon and carry a 5 year warranty.

IMPORTANT NOTE: King MTB hubs currently have a 120 day lead time for special orders or items not in stock.

Technical Information:

  • Weight: 176g +/- 5% 
  • Hole Count: 24, 28, 32
  • Axles Standard: 100x12mm TA, 100x15mm TA, 110x15mm TA Boost
  • Axles Optional: QR inserts (must be used with 100x12mm TA)
  • Bearings: Chris King proprietary steel or King ceramic option
  • Colors: King anodized and matte finish colors
  • Ideal Use: Road Disc, CX, Gravel, MTB ISO disc Boost  
  • Wheel building dimensions here
  • 5-year manufacturer warranty

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.

The Chris King ISO B (Boost) front mountain bike hub is 100% manufactured in Portland, Oregon. This Boost offering from Chris King is a completely new hub shell with wider spaced flanges for symmetric wheel builds. 

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