The SLX sections are all carbon (with a little insulating on the handle sections). All of our poles use the same pole architecture so could technically be mixed and matched - this ability to add sections is also true for many other brands as well (Ionics, X-Tel, Brodex, etc.).
If you click on the pole section on our website, then click on the third option down which say poles spares and sections, then click on CLX, SLX, SMAX & Xtreme Pole Spares, then click on Replacement Pole Sections, then you have our complete selection of pole spare sections with all of the prices.