Kryptonite Bike Locks - Tough World, Tough Locks BMX, Mountain bike, Road bike and Fixie riders all put their pride and joy in Kryptonites hands. Kryptonite has been the big name in bike locks for years now and have a range of cable wire and shackle U locks all with key and number combination locking options. Some of their locks even come with insurance that if your bike is stolen due to lock failure they will pay out. See product description for details.