Wheelbuilder.com :: Hubs :: Mountain :: Project 321 ISO Disc Boost Rear MTB Hub

Project 321 ISO Disc Boost Rear MTB Hub

Project 321 ISO Disc Boost Rear MTB Hub
Project 321 ISO Disc Rear MTB Hub (G2)

The Project 321 Boost G2 rear hub is designed for bikes with 148x12 spacing. The G2 rear hubs are redesigned with a magnetically actuated, 6 pawl ratchet drive system. This unique drive mechanism allows each rider to customize engagement speed. Select from 144 or 216 points of engagement and two sets of pawls allowing for a loud or quiet freehub.

Technical Information

  • Weight: 280g ±5%
  • 148 x 12mm only
  • Available in ten colors
  • Wheel building dimensions:
    • Flange diameter non drive side: 58mm
    • Flange diameter drive side: 66mm
    • Center to flange non drive side: 34mm
    • Center to flange drive side: 24mm

Additional Information:

  • CNC engraved logo
  • 10 year warranty for defects in materials or craftsmanship
  • Made in the USA

Inventory Note: We stock a wide variety of Project 321 hubs, however our inventory fluctuates daily. We may need to order hubs with an average lead time of 2-7 business days. Some hubs may take longer. If your order is time sensitive we encourage you to contact us for up to the minute product availability and shipping lead times.

Product Weight (g) 282g
Our price: $415.00
Hole count
Bearing upgrade
Engagement speed
Pawls option
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Have a question? Need more information? Ask us a question.
Rich Sawiris
Answered on Jun 4, 2018
Ceramic Speed bearings are only produced with ceramic balls with high precision hardened steel races.

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