re yamaha locks was cobra lock any lock including the kyptonite utypes are easy to break into if the person has the proper supplies and or motivation minutes and your bike is gone i would be glad to explain but i dont want to contribute to any unlawful activities especially since i have a bike that i would hate to see ripped off by such a trival tactic warning no lock alone is a safe deterent against theft the thief doesnt need to be a locksmith or a lock picker to walk away with your property i personally think motion alarms in combination to a lock of this type is the way to go if in fact you are that concerned bill
