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Current turnaround times for shipping: 1-3 days Free shipping for parts and accessories on orders over $99 within the contiguous USA

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Free shipping for parts and accessories on orders over $99 within the contiguous USA

Chris King Boost Rear Hub

Chris King Boost Rear Hub
  • Color: Black
  • Color: Gold
  • Color: Matte Mango
  • Color: Matte Slate
  • Color: Navy
  • Color: Red
  • Color: Silver
$363.75 - $799.99
$485.00 - $799.99
Please select options


Our Boost Centerlock 148x12 rear hubs use one-piece solid axles to provide a stiff platform that makes your suspension perform better and gets every one of the watts you make into the dirt. To keep mud and water out of the works they have heavy-duty bearing seals and snaprings that provide superior protection with ultra-low drag. Each one is like a rolling dream of trail riding performance. Our bearings, both steel and ceramic, have heat-treated, surgical grade steel races that are machined simultaneously to ensure perfect matching. The quality and speed of our bearings is what you will feel (and hear) on every ride. As Chris King bearing tracks burnish they get actually get faster. A little bit of regular love (i.e. service) will keep this hub rolling 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.

All Chris King rear hubs come with that signature, angry-bee sound.

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
Available with Micro Spline, HG or XD driveshell
Easily serviceable with a T10 Torx and pick or pen knife
Ceramic bearing upgrade available
Specifically designed for "BOOST" 148mm x 12mm axle standard

Axle Width: 148mm
Flange Diameter DS & NDS: 57.4mm
Center to Flange DS: 24mm
Center to Flange NDS: 36.3mm

Part Numbers

Option UPC MPN Store SKU
Centerlock / Black / Micro Spline 841529105438 ECB1BB2 HUB38556224K
Centerlock / Black / XD
6-Bolt / Black / Micro Spline
6-Bolt / Black / XD
Centerlock / Gold / Micro Spline
Centerlock / Gold / XD 841529110159 ECY1BB3 HUB37795217D
6-Bolt / Gold / Micro Spline
6-Bolt / Gold / XD
Centerlock / Matte Mango / Micro Spline 841529105452 ECM2BB3 HUB43446130O
Centerlock / Matte Mango / XD
6-Bolt / Matte Mango / Micro Spline
6-Bolt / Matte Mango / XD
Centerlock / Matte Slate / Micro Spline 841529107203 ECH2BB2 HUB43544540E
Centerlock / Matte Slate / XD
6-Bolt / Matte Slate / Micro Spline
6-Bolt / Matte Slate / XD
Centerlock / Navy / Micro Spline
Centerlock / Navy / XD 841529109863 ECN1BB3 HUB37775463Y
6-Bolt / Navy / Micro Spline
6-Bolt / Navy / XD
Centerlock / Red / Micro Spline
Centerlock / Red / XD 841529107050 ECR1BB3 HUB36407881D
6-Bolt / Red / Micro Spline
6-Bolt / Red / XD
Centerlock / Silver / Micro Spline 841529110197 ECS1BB2 HUB39392582R
Centerlock / Silver / XD
6-Bolt / Silver / Micro Spline
6-Bolt / Silver / XD
Centerlock / Matte Turquoise / Micro Spline
Centerlock / Matte Turquoise / XD ECT2BB3 HUB4723690E
6-Bolt / Matte Turquoise / Micro Spline
6-Bolt / Matte Turquoise / XD
Centerlock / Purple / Micro Spline
Centerlock / Purple / XD
6-Bolt / Purple / Micro Spline
6-Bolt / Purple / XD FP1241 HUB27332366D