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Hubs - Rear (BOOST / Shimano HG Driver)

Project 321

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PROJECT 321 Rear Hubs (12x148mm / 216 POE)

  • Weight: 282.3g
  • Axle options: 148×12 TA only.
  • Utilizes our new patent-pending magnetically actuated, 6 pawl, ratchet drive system.
  • Available with a 6×2 (6 pawls with 2 pawl engagement) driver that yields 216 points of engagement
  • Both options available with either quiet or loud pawls.
  • XD and HG freehub bodies available.
  • New CNC engraved logo (not laser etch or sticker).
  • Industry leading warranty: 10 years on hub shell and axle, 3 years on pawls, drive ring, and free hub body.
  • Made in the USA.
  • Comes standard with 5 High Precision Japanese Cartridge bearings.
  • Better flange angles eliminate (or drastically reduce) spoke contact with flange, reduce lateral flange loading and create a stiffer and longer lasting wheel build.
  • Bearing preload adjustment that can be accurately loaded to adjust bearing preload for zero play and to compensate for bearing wear.
  • We recommend using only Dumonde Tech Freehub Oil in our drive system.
  • Lightly polished before ano to retain a machined look.  Not over polished.
  • Available in all 10 color options with long lasting anodization.


 Hub Type Rear
Axle Width 148mm
Disc Brake Rotor Mount 6-bolt
Spoke Count 24/28/32
Pawls Option Loud/Quiet
Freehub Body SRAM XD
282.3 grams