Previous one stolen.
On a separate note, why is there not a Want to Buy/For Sale sticky thread wherein all items to be bought and sold would be posted? Creating entirely new threads/discussions for every item bought or sold seems unnecessary to me. It crowds out the main page and makes searching for stuff more difficult than it needs to be. Buying or selling a single item isn't a "topic", or am I missing something.
Somebody stole just the left crank arm off of your bike? 2-piece Hollowtech cranks come off pretty easily but this is a bit ridiculous. Is there a way to smoke crack out of these things? Will there be a spate of hollowtech left crankarms being stolen because of that?
I feel your pain Jason. I doubt you will find a single, used Shimano left hollowtech crankarm anywhere -or even a single new one. They are not cheap either. 105 or better Hollowtech is going to set you back a bit quite a bit. Even the Tiagra cranksets cost about $150 and on up. Maybe an LBS can order a single arm through Shimano.
Send me a PM if you end up looking for a replacement crank.