Americas Best Bowstrings offers 3 replacement series of custom bowstrings for Carbon Express Crossbows. We offer strings for every model that Carbon Express makes new or old. Below, you will see a list of the most popular Carbon Express Crossbow models that we build strings for. If your particular Carbon Express model is not listed please call us at 1-330-893-7155 and we will get it added and help you build the perfect bowstring.