Hello All:
Let me start by telling you all that I am a professional Locksmith working in Haines City, FL (863) 422-6778 if you have any questions you want answered. Now I usually do not work on these I am a commercial, residential, a safe Locksmith. But I have some experience with auto, and motorcycle in the past, and have a association member that is the top of the trade with the transponders (he teaches other locksmiths).
Yes there is a non transponder (Chip) key, it is Ilco Key Blank # "X270". When cut to your mechanical cuts it will operate all of the bike except start it. This you should be able to get just about any where you get keys copied I recommend a locksmith but any place should be able to do it. They just have to carry the blank. Ilco is the biggest key manufacturer in the world.
There is an after market Transponder (Chip) Key, it is a Silca Key Blank # "ZD24RT5" (it has a key ring hole). It has to be modified slightly but will work. Yes there is a limit to the # of working keys (I am not sure of the # for the Can-Am's it varies) usually when you add the last one the first one drops out.
Now the number of working different keys may be limited but there is all so a cloning process that makes that mute. Instead of each key being different to the computer, a cloned key is as far as the computer is knows is the same as the original.
I hopes this helps and again if there are any questions please feel free to post here or call me at 863-422-6778 I will be happy to help.
Lock of Luck
Michael