Q: What is this billet traction arm made of?

It is CNC-milled from 6061 aluminum for maximum strength at low weight, and the design was FEA-simulation optimized for static, dynamic, and fatigue strength before production. The sealed spherical bushings give precision and durability with silent operation. Every one of our rear arms starts from a precision 3D scan of the car’s suspension, then gets validated through real racing and street use on our own vehicles.