Rear Hub Project321 G3 157x12 28h Microspline 6-Bolt - Black

Rear Hub Project321 G3 157x12 28h Microspline 6-Bolt - Black

The approach with G3 was to build a hub that strikes the ideal balance between strength, weight, reliability, and efficiency. The result of this design philosophy is a robust and efficient hub set with instant, rock-solid engagement.  

Engagement

G3 hubs use the same 72 tooth drive ring and three-step magnetically actuated pawls as the proven G2 hubs. To increase engagement without compromising reliability we added two additional pawls instead of miniaturizing the teeth on the drive ring and pawls. A total of eight pawls work in teams of two, to give 1.25° or 288 points of engagement. We believe this gives riders the ideal balance of instant engagement and rock-solid reliability. 

If using center lock rotors, external spline lock rings must be used. G3 hubs are not compatible with internal spine lock rings.