Praxisworks Girder HD Carbon G2 Cranks

The Girder HD Carbon G2 cranks are built specifically for enduro and aggressive trail riding. They feature a heavy-duty carbon layup designed to handle the high-impact forces and abuse common on demanding mountain bike terrain.

These cranks use a Praxis M30 spindle system, which requires a specific Praxis M30 bottom bracket. They are compatible with standard 68/73mm bottom bracket shells, but you must ensure you have the correct M30-specific bearings installed.

The 3-bolt interface is a standard mounting pattern that allows you to swap chainrings quickly without removing the entire crankset. It gives you the flexibility to easily change your gearing or replace a worn ring by simply unbolting the ring from the crank arm.

Praxis updated the geometry of the G2 version specifically to improve chainstay and ankle clearance. While they fit most modern frames, the improved shaping significantly reduces the likelihood of heel rub or frame interference compared to previous iterations.

No, the cranks are sold as arms only. You will need to purchase a 3-bolt direct mount chainring separately to complete the setup.

The M30 spindle uses a 30mm diameter on the drive side for stiffness and a 28mm diameter on the non-drive side to accommodate specific bearing sizes. This hybrid design balances the stiffness of a 30mm spindle with the durability and bearing life of a traditional 24mm system.