Chris King ISO B 148x12 Rear Hub

Designed as a precision mountain bike tool, the Chris King ISO B 148x12 Rear Hub delivers unmatched stiffness, durability, and performance. Its one-piece solid axle maximizes power transfer and suspension efficiency, while heavy-duty bearing seals and a threaded drive shell seal ring protect against mud, water, and contaminants, keeping your hub performing flawlessly on the roughest trails.

Chris King’s legendary in-house bearings—available in steel or ceramic—feature heat-treated, surgical-grade steel races machined simultaneously for perfectly matched inner and outer races. Over time, the bearing tracks burnish, improving speed and reliability, and all hubs are fully serviceable for long-term durability.

The patented RingDrive system with 72 points of simultaneous engagement ensures lightning-fast power transfer, precise engagement, and the unmistakable “angry-bee” Chris King sound. Built with a canted flange hub shell for stronger wheel builds, the ISO B 148x12 hub is engineered, manufactured, and assembled in Portland, Oregon, USA, providing mountain riders with a hub that is both responsibly lightweight and built to last.

Key Features

• Axle Standard: BOOST 148mm x 12mm

• Drilling: 32h

• RingDrive System: Patented 72-point engagement for rapid power transfer

• Bearings: Legendary in-house bearings in steel or ceramic; fully serviceable

• Hub Shell: Updated shape with canted flanges for stronger, more durable wheel builds

• Maintenance: Easily serviceable and rebuildable with Chris King Hub Service Tool

• Warranty: 5-year built-to-last coverage

• Made in the USA: Engineered, manufactured, and assembled in Portland, Oregon