The Simson Ring lock “Sure” is very strong and can be mounted on virtually every frame. The lock is ART 2 approved and thus usable as approved lock for almost any bicycle insurance. The ring lock can be mounted on the frame tube with the Simson ring lock Mounting set, but the lock is also suitable for upper bolt assembly. The lock comes with two keys.

Simson offers you the opportunity to order new keys. Using the code engraved in your key, you can order keys by following the link below. Beware! If the key belongs to an ART-approved lock, and is stolen, you are required to notify your insurance company of the theft. It is also important to report the fact that you ordered new keys.
Order Simson keys