Abus Granit Extreme Plus 59 Chain Lock (12mm X 140cm) Lock-chain combinations are an excellent choice when it comes to securing motorbikes and scooters. There are usually plenty of attachment options on the wheels and frame for securing them to a fixed object. A bike that is secured in this way cannot simply be picked up and carried away - which is a real security advantage. It may also be possible to use a combination of a brake disk lock and a chain. This combination is a so-called "2-in-1" solution.