Chris King Hub bearing 6 steel bolts Boost Microspline 32h

Chris King Boost 6-Bolt 148x12 rear hubs are designed as precision tools for the mountain. We use solid, one-piece axles to provide a rigid hub that will help your suspension work better and propel every watt of power into the dirt. To avoid mud, water and contaminants on rough trails, Boost 6-Bolt hubs feature heavy-duty bearing seals and a threaded sealing ring.

Our bearings, available in steel and ceramic, feature heat-treated, surgical-grade steel bushings that are simultaneously machined with equal-wear tools to ensure a perfect match between inner and outer rings. The quality and speed of our bearings is what sets us apart from the competition, and it's what you'll feel and notice on every ride. Like Chris King raceways, they get faster with age, and all our hubs and bearings are fully repairable for years of demanding use.

The patented Chris King RingDrive system with 72 points of simultaneous engagement will allow you to reach the ground quickly, enjoy unrivalled engagement and produce the legendary Chris King angry-bee sound.

• Designed, manufactured and assembled in Portland, Oregon, USA.


• Lifetime warranty King


• Tilted flanges for stronger wheels


• Patented RingDrive system with 72 simultaneous contact points for unsurpassed hub engagement


• Legendary bearings manufactured in-house


• Available in 28h and 32h bore sizes


• Available with Micro Spline, HG or XD shells.


• Easily repaired with a 2.5 mm hexagon and a pick or penknife.


• Fully rebuildable with our ISO hub maintenance tool.


• Lightweight and responsible


• Ceramic bearings available


• Specially designed for the BOOST 148 mm x 12 mm axle.