when I bought my bike in 2004 it came with 2 sets of keys.2 long and 2 short. The long keys are for ignition, gas, helmet lock, and tool box. I just cant remember what the shory keys were for. I feel like a moron.
Yes it is for the chain lock which would be in the bottom of tool box if it still exists.
K&N filter pods
Vance & Hines cruisers