Add to Cart IronRidge IronRidge XR-100-168B Solar Rail XR100 Black PRE-CUT $60.49 IronRidge XR-100-168B Solar Rail XR100 Black PRE-CUT. This is an XR-100-168B rail cut in half. You will receive two halves, each measuring 84 inches (7 Feet). These cut rails ship ground, not freight. XR100 is a new "mid" rail. XR100 is the ultimate... Compare Add to Cart Add to Wishlist