Question on purchasing a Termignori exhaust for S2R

When I bourse through the catalog, I only see the exhaust in carbon fiber for the S2R. I see it in TI for the S4R. Is there any reason the S4R cans are not recommended for the S2R? I realy would like them in TI.

aside from the manifolds that bolt to the cylinder heads, the stock exhaust is the same between the s2r and s4r so i don't see any reason that the cans wouldn't be interchangable.