Chris King Iso B / 6 Bolt Boost 148 Mm Conversion Kit Gen4

Convert your ISO B and Boost 6-Bolt hubs to fit Shimano HG, Micro Spline, or SRAM XD cassettes using our latest technology.

Gen 4 conversion kits include a pre-assembled axle, driveshell, and adjusting clamp for a plug and play swap. Installation requires a 2.5mm hex key and T10 Torx tool.

- Twin bearing
- Stainless steel bearings.
- Latest Gen4 Internals
- Suits 148mm Boost hubs only
- Compatible with ISO B 6-Bolt hubs. Serial numbers will begin with 851.