APRO's removable mandrel produces a smooth and uniform surface within the carbon frame, allowing for less material for the same strength. The resulting bicycle frame provides superior strength and stiffness while being extremely lightweight. (Patent : M412121)

Internally routed cables provides a clean, sleek appearance while tucking cables away from dirt and debris.

Tapered 1.5" lower to 1-1/8" upper; 1-1/4" to 1-1/8" is also available. Tapered head tube designs are stiffer and stronger than conventional straight head tubes, with the added benefit of offering a greater surface area for welding. Minimal flex at the front of the frame provides increased steering precision and accuracy.

Hydro forming is a cost-effective way of shaping ductile metals such as aluminum into lightweight, structurally stiff and strong pieces. Hydro forming is a basis for creating complex shapes, and produce stronger, lighter, and more rigid unibody structures for frames.

Direct mounting your rear brake provides additional torsional stiffness and eliminates adaptors, bolts and excess weight.