I have been a fan of Corbin for a while, had a classic solo on my valkyrie before. I just got in my new classic solo and passenger seat today. Here are some pics, you can also see my new license plate mount from baron's. I hated the stock license holder, this one is amazing.
Sorry for the bad lighting.
Here it is with the backrest, but not pushed all the way in.
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Yes, it was expensive, but what I wanted. Its very comfortable, and extremely supportive for you back even without the backrest, which is an issue for me on longer rides. It holds you in position very well, where on the stock seat you can really slide around.