Project 321 Hubs

Introducing the latest hub offering to NOBL’s lineup! The second generation of Project 321’s hub offers improved reliability, decreased drag and the same unique signature configuration with magnet-operated pawls. The quick engaging hub comes in at a competitive weight and is available in a variety of colors. Pairing these hubs to a set of our rims will result in a reliable and instant performance upgrade for your bike.

Magnetic Motivation

P321 achieves less drag through using magnets as a pull spring to move the pawls into the drive ring. This means that the force is strongest at the point of full engagement, which is the opposite of traditional push springs where the force is the strongest during freewheel which adds drag.

Unique Design

The Project 321 hub operates with ‘springless’ pawls!  Utilizing a freehub and pawls with magnets bonded to them, they bring reliable performance and an incredibly fast and responsive pawl engagement.


P321 standard drivers feature 6 pawls with 2 pawl engaging simultaneously, creating 216 points of engagement. The new system also produces 68% less drag compared to the first version of their hub.


P321’s drivers feature a 3-year warranty. But their hub shells and axles have a ten-year warranty. When Project 321 went to redesign their G2 hubs, they decided to keep the original hub shell design because of its dependability. That means these hubs are also backwards compatible.


Custom Colors: Yes – Turquoise, Red, Orange, Purple, Gold, Black, Blue, Pink, Green

  • Engagement: 8/10
  • Durability: 8/10
  • Weight: 8/10

Project 321 Hub Colors

We try to keep these hub options in stock: Black, Red, Purple, Turquoise, Gold, Orange.

P321 Hub Weights


166 g

Front Boost 110×15

297 g

Rear Boost 148×12 Microspline

464 g

Boost Pair 110/148×12 Microspline

P321 Wheelset Examples

Weights based on Boost hubs with an Microspline driver, built with Sapim D-Lights

NOBL All Mountain Enduro TR37

TR33 + Project 321

XC All Mountain

The ultimate chameleon, the TR33 is comfortable no matter the situation. Between the tape of an XC race or getting sendy on some double blacks, it offers precision and compliance.


32h/28h, 29″ or 27.5″, Internal Width 27mm, Depth 24mm

Wheelset Weight

29″ 1446g / 27.5″ 1426g

NOBL Plus Enduro Ebike Rim TR41

TR37 + Project 321


Designed and tested on the World Cup circuit, the TR37 is right at home chasing podiums at your local enduro, or session laps after work.


32h, 29″ or 27.5″, Internal Width (front 31mm) (rear 30mm), Depth 20.5mm

Wheelset Weight

29″ 1611g / 27.5″ 1561g