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Chris King Boost 6-bolt Rear - Steel

Chris King Boost 6-bolt Rear - Steel
  • Color: Black
  • Color: Matte Black
Cassette Compatibility: Select cassette compatibility
Hole Count: Select hole count
Rotor Type: 6-Bolt
Axle: 148x12
Please select options Unavailable


Chris King Boost 6-Bolt 148x12 rear hubs are designed as precision mountain tools. We use one-piece solid axles to provide a stiff hub that will help your suspension perform better and drive every watt of power into the dirt. To thwart mud, water, and contaminants as you power through rough trails, Boost 6-Bolt hubs have heavy-duty bearing seals, and a threaded driveshell seal ring.

Our bearings, available in steel and ceramic, have heat-treated, surgical grade steel races that are machined simultaneously, with tools of equal wear to ensure perfectly matched inner and outer races. The quality and speed of our bearings is what sets us apart from the competition and they are what you will feel and notice on every single ride. As Chris King bearing tracks burnish they get faster with age and all our hubs and bearings are fully serviceable for years upon years of demanding use.

The patented Chris King RingDrive with 72-points of simultaneous-engagement will get your power to the ground fast, provide unmatched engagement, and give you that legendary Chris King angry-bee sound.

- Steel Bearings
- Engineered, manufactured and assembled in Portland, Oregon USA
- King Lifetime Warranty
- Canted flanges for stronger wheel builds
- Patented RingDrive system with 72 simultaneously interfaced points of contact for unmatched hub engagement
- Legendary made-in-house bearings
- Come in 28h and 32h drilling
- Available with Micro Spline, HG or XD driveshell.
- Easily serviceable with a 2.5mm hex and pick or pen knife
- Completely re-buildable with our ISO Hub Service Tool
- Responsibly lightweight
- Ceramic bearing upgrade available
- Specifically designed for "BOOST" 148mm x 12mm axle standard

Part Numbers

Option UPC MPN
148x12 / Shimano Micro Spline / Black / 28h / 6-Bolt 841529216653 EFB1BB2
148x12 / Shimano Micro Spline / Black / 32h / 6-Bolt 841529205619 EFB1CB2
148x12 / Sram XD / Black / 32h / 6-Bolt 841529205633 EFB1CB3
148x12 / Shimano Micro Spline / Matte Black / 28h / 6-Bolt 841529216677 EFB2BB2
148x12 / Sram XD / Matte Black / 28h / 6-Bolt 841529216684 EFB2BB3
148x12 / Shimano Micro Spline / Matte Black / 32h / 6-Bolt 841529216707 EFB2CB2
148x12 / Sram XD / Matte Black / 32h / 6-Bolt 841529216714 EFB2CB3