I have lost the keys to these after having them a month. Kryptonite does replace your lock if you lose your keys for a charge of $20 for the keeper and $25 for the kryptolok. You would have to mail the locks to kryptonite to get a new set of locks. Originally paid $80 for the kryptolok and $40 for the keeper. Info on how to get the keys below in link. $10 firm. Use email link to contact me, thanks. https://kryptonite.zendesk.com/hc/en-us/articles/115001379288-How-Much-Does-Lock-Out-Replacement-Cost-?mobile_site=true