G3 Rear Hub Center Lock 157x12
Performance without Compromise.
G3 features instant rock-solid engagement, patent pending 6-lock technology, and more.
Unit price per
G3 Center Lock 157x12 Rear Hub
Our 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 our 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.
Center Lock rotors require the use of external spline lock rings. G3 hubs are not compatible with internal spine lock rings.
G3 is full of improvements, Learn more about what's new in our G3 Hubs.
Description
G3 Center Lock 157x12 Rear Hub
Our 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 our 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.
Center Lock rotors require the use of external spline lock rings. G3 hubs are not compatible with internal spine lock rings.
G3 is full of improvements, Learn more about what's new in our G3 Hubs.
Hub Dimension Chart

Hub Comparison Chart
P321 Warranty
If you are experiencing issues with your Project 321 hubs and you feel you require warranty help, please use the link below to learn more.