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12x142 / 12x148 BOOST rear,


This conversion kit includes two axle spacers, a 6-bolt rotor spacer and rotor bolts for straightforward installation. Designed to work with most 142mm non-Boost hubs, it is also recommended to check with your specific hub manufacturer for full compatibility. This kit is specifically developed to allow a 142x12mm hub to be converted to 148x12mm Boost spacing. Genuine Brand-X spare parts.

Please note: Your wheel may need redished to work in a Boost frame.


  • Compatibility: Most 142mm non-Boost hubs
  • Includes: 2x axle spacers, 6-bolt rotor spacer and rotor bolts
  • Conversion: 142x12mm to 148x12mm
  • Manufacturer's Part Number: BXRBC
  • Size: 142x12mm to 148x12mm


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