Bill, there are a couple variations of cable assemblies, but in general, they all serve the same purpose. Yes, on each of our karts, we have a bare steel braided cable which is housed inside a sheath/sleeve (could be vinyl, plastic, teflon tubing – whatever). If the cable you use is coated in vinyl, I wouldn’t fret over using a bare steel cable. As Bo said, you might look at getting a whole assembly (cable and sleeve) – you will need to make sure that the anchor on the cable is what will fit your carb slide though.