ART 2 stars
Two ART stars is the rating that matters when it comes to bicycles: this is generally the minimum bicycle insurers require. You will find it on ring locks, folding locks, cable locks, and on the chains and insert chains that you attach to a ring lock.
A ring lock only secures the wheel, nothing more. If you also want to be able to secure the bike to a post or rack, choose a ring lock with a plug-in chain — together they remain ART 2 compliant, and you won't be stuck with a bike you can only lift.
The stars below are derived from the product specifications, not an estimate. If you already know which type of lock you want, filter by product type. Exactly what your insurer requires is stated in your policy.