You want your bike to be safe, but it can be a hassle lugging around a lock that's super heavy. That's why the best lightweight bike locks are a game-changer. No lock is 100 percent theft-proof, and typically, the most lightweight locks aren't going to be the most secure options. However, they can be great for deterring crimes of opportunity during shorter periods of time. They can also be a second line of defense for a more robust lock, allowing you to secure easily removable bike components, like the seat and wheels.
So, what should you look for in a bike lock? The most secure locks will be made with tough, durable components, like solid or multi-layered steel and Kevlar. Additionally, a reinforcement such as Santoprene or PVC plastic coating will help protect your bike from scratches.
You'll also want to consider the locking mechanism itself. If it relies on a key, does it easily glide in and out, or does it tend to stick and jam? If it's a combination lock, is the code easy to set, and do the numbers turn easily? The best way to determine this is to read reviews, when possible. Most importantly, remember that whatever option you pick won't do you any good if you don't secure your bike lock properly.
To help you make a decision, I've researched the best lightweight bike locks and arranged them below, from the heaviest to the lightest (the heaviest ones being the most secure). Read on to find the lock that's best for your needs.