The Ninja now has some new Yoshimura, R77 slip on pipes. I went for stainless steel with carbon fiber end caps, though I was sorely tempted by full carbon. Some better pics to follow, but here are a couple I shot indoors yesterday. The weight saving is substantial.
I should have taken a pic when unboxing. Basically it looked like the pipes were wrapped in plastic, placed in a long cardboard box and then gap filling foam was sprayed around them. This is the box of foam after the pipes had been removed.