centre-lock J-bend Boost 148 rear hub


High quality, light weight centre-lock Boost 148 rear hub fitted with stainless steel bearings.

The JRA rear Boost 148 centre-lock hub is available in 24, 28 or 32 hole drillings and comes fitted with TPI stainless steel bearings. One of the lightest, most reliable centre-lock Boost compatible hubs available.

Weight: 251g
Main hub bearings: 2 x 6903 stainless steel /  freehub 2 x 6803 (XD) or 1 x 6803, 1 x 6903 (shimano).
Hole counts: 24 / 28 / 32

Hub measurements for spoke length calculations:
c-left: 36mm
c-right: 21mm
left flange diameter: 58mm
right flange diameter: 58mm


We used the best hubs we could find for our range of wheels and hubs: Bitex. We have ridden them extensively and we are convinced that they offer outstanding durability, reliability and serviceability.

All jra hubs are fitted with sealed stainless steel bearings from TPI and Enduro. Freehubs feature a patented 6 pawl engagement with 48 points in road hubs and 54 point pick-up for MTB hubs.

select options

centre-lock J-bend rear hubs – Boost 148mm spacing

axle & end caps for rear centre-lock Boost 148mm hubs

Axle end cap kits for Boost centre-lock rear hubs.

  • Boost 12x148mm

M-type freehub with TPI stainless steel bearing - dr

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

  • Shimano 8-12sp
  • Shimano Microspline
  • Sram XD
  • Sram XD-R
  • Campagnolo
  • Campag 13 speed N3W