Well, you can buy individual bags from certain vendors, but you're probably better off getting a whole new set from JC Whitney or Summit or one of the many other national vendors. I have the part number around here, lemme know if you want me to find it. I believe the set of two is about $70. You can then take your other bag out and sell it....if you get $10 or $20 for it, you're that much better off.