Disc locks aren't glamorous or pretty, but they can be the difference between riding home and walking out to an empty space where your bike once stood.
Below are four of the best disc locks available on the MCN Shop and Amazon, and one new-for-2017 disc lock from British manufacturer Oxford.
If you're a new rider or you're a little bit forgetful, don't forget to add a bright minder cable so you don't ride off with your disc lock still attached.
This rather snazzy looking lock is alarmed and constructed from special hardened steel to give thieves a tough time. It uses ABUS's patented Snap'n Go system so it can be secure using one hand.
Oxford's Monster disc lock is constructed from 11mm hardened Ni-Cr-Mo alloy steel and Thatcham and Sold Secure gold approved. It features a double locking mechanism with two hardened steel bolts.
Away from the higher end disc locks is this little number from Mammoth featuring a 6mm pin and made from hardened steel. If you want something small and cheap to stash in your pocket then this is the one.
Simple and chunky, the Nemesis is secure gold approved and comes with an anti-pick double locking mechanism. The lock also comes with a sturdy 16mm hardened steel shackle too.
This rather large disc lock features an 11mm hardened steel pin with a hinged barrel cover and the tapered design helps place the lock over the disc.