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Project 321 Road/CX Disc Brake Rear Hub

Project 321 Road/CX Disc Brake Rear Hub
Projet 321 Road/CX Disc Hub Project 321 Color Offerings

The Project 321 road/CX disc rear hub was designed for disc brake equipped road and cyclocross bikes and was inspired by Project 321's popular MTB ISO rear hub.

The Project 321 road/cx disc rear hub allows you to choose between a 6×2 (6 pawls with 2 pawl engagement) driver that yields 1.7° (216 POE) engagement or  6×3 (6 pawls with 3 pawl engagement) option that yields 2.5° (144 POE) engagement. Quick engagement is ideal for sprints, cyclocross applications, and steep climbs where a delay in power can cause you to become unstable or topple over. It also reduces shock into the knees when riding on punchy roads and terrain where you are on and off the power frequently.

Additional Information:

  • Weight: 281g
  • Colors: Black, red, blue, green, gold, silver, pink, purple, orange, turquoise 
  • Available axle configurations: 135mm QR, 142x12
  • Available hole counts: 24, 28
  • 11-speed Shimano and Campagnolo ready (9/10-speed backwards compatible)
  • CNC engraved logo
  • 10 years on hub shell and axle, 3 years on pawls, drive ring, and free hub body and 1 year Enduro bearing warranty
  • Made in the USA
  • Comes standard with Enduro ABEC 5 bearings
  • Ideal use: road disc training and racing; cyclocross disc training and racing

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) 281
Our price: $415.00
Axle type
Hole count
Drivetrain type
Engagement speed
Ceramic upgrade
Pawls option
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Sapim Internal Self Locking Brass Nipple
Sapim Internal Self Locking Brass Nipple
Have a question? Need more information? Ask us a question.
Rich Sawiris
Answered on Jun 28, 2017
Yes it is, you will select the XD Driver if you are running a 42t or higher.

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