Convert your existing Chris King mountain hub to HG, XD, or Micro Spline with a new driveshell. 

• Compatible with all ISO or Centerlock mountain rear hubs with twin-bearing axles.
• Installation requires a T10 Torx and Park Tool FR-1.3 (or equivalent)
• Refer to the Boost Centerlock Service Video for driveshell removal and installation instructions. 
• Available with stainless steel or ceramic bearing.
• Available in Silver or Black anodizing.
• If you have an ISO hub with a needle-bearing axle & driver, check out our Twin-Bearing Conversion Kits.