The Tripewire XL is the ultimate 'U' lock bike protector. It combines a 15mm high tensile steel cable with a U-lock
The Oxford Trip-Wire has a key replacement service. When you buy your Trip-Wire, simply note down the number which comes attached to the keys on a metal tag. Keep this in a safe place, then in the event that you are unfortunate enough to lose all your keys, it will be possible to get a new key made up for you.