yes you get the number from your key ignition, (little numbers on the flat part where your key goes in)you may have to prove its your bike to the locksmith but thats the least of your worries,i did this too,make a spare and stash it in your toolbox when you get another one cut,you may be wondering that the new key from the ignition numbers seems pretty easy..yeah it is ,lock that bike up with the chain lock that originally came with it or a kryptonite one,this old steel makes for some great parts to the right person.