Please click here for the complete report of the testing. Yes, however the end fittings for the downtubes are not interchangeable between the carbon downtubes and aluminum downtubes, nor are the wires interchangeable. You'll need to replace the carbon downtubes with Slipstream downtubes WITH fittings one time, and replace the bottom front, bottom rear and bottom side wires. After that you can subsequently replace a broken aluminum downtube without replacing the end fittings or wires. Wire sets are not interchangeable between the carbon downtubes and aluminum downtubes because the front to rear wires sets are attached at a different location on the downtube and are therefore different in length.
Drag performance is about the same.
The aluminum downtubes are significantly less expensive to replace if you break one. Except for OEM manufacturers, or individually authorized top ranked competition pilots, our policy requires that parts orders be placed through a Wills Wing dealer. Yes, provided the overall geometry of the original control bar is reasonably compatible. The downtubes are toed in, and the basetube is angled down 15 degrees relative to a perpendicular to the plane of the bar, which is 3 degrees down relative to the keel when the bar is set at the proper 12 degree rake. These angles are set by the geometry inherent in the fittings, and have been set such that the aerodynamics are optimized across the broadest speed range when the bar is rigged at the specified rake angle.