JRA boost centre-lock straight-pull rear hubs


Smooth rolling rear hub with 54 engagement points and a weight of just 270g.

boost Centre-Lock SP rear hub

Boost centre-lock disk mount, for straight-pull spokes.

  • 24 hole

JRA M-type aluminium freehubs

Freehubs for JRA hubs. Can be interchanged to convert your hub to run a different cassette.

  • Shimano 11sp
  • Shimano Microspline
  • Sram XD
  • Sram XD-R


JRA boost hub with centre-lock disk mount and straight-pull spokes.


Additional information

Weight 270 g

boost Centre-Lock SP rear hub

hub shell type

Boost 148mm

j-bend or straight-pull


braking options

centre-lock disk brake

hole count

colour - hub

classic black

rider weight limit

heavier – no weight limit

hub code


JRA M-type aluminium freehubs

Weight 85 g
freehub type

Shimano 11sp, Shimano Microspline, Sram XD, Sram XD-R