We are talking about the brakes here! This is what stops you. I know of no reliable way to replace the molded on end. Replace the cable they cost very little. Update: Well, if the question is "can" you. I guess the answer is yes you "can" . In an emergency, get you home situation you can tie a knot in the cable. You can even use a gear cable. Use the brakes with great care and replace with a proper cable when you get home. There are clamp on ends made for straddle cables for cantilevers and U brakes. Basically a cylinder with a hole and a set screw. Not very reliable, because the set screw squishes and damages the cable and it will eventually fail.