[Bob Putnam]

Dom,

Yes, we use the same half-shaft design on that rear. Actually, exactly the same pieces with a spacer in place the inboard rotors.

I am alway amazed at how small the shafts are too. Besides the ease of mating to the CV joint splines, I suspect that they are small to allow a little twist, decreasing the peak and cyclic loads on the transmission pieces, etc. I can't imagine that the rotational inertia difference would be worthwhile, especially if the solid pieces were replaced by a carbon-composite tube.