Word to the wise: throw away the stainless bolt Corbin supplies to hold the backrest in.

Installed the Corbin backrest using the Corbin supplied screw. Allen head, which is a pain, but finally got it tight (after breaking my ball-head wrench).

Decided I didn't really care for the back rest and went to remove it; seized tight. Had to notch the screw head with a die-grinder and use a huge flathead to remove, which worked fine till I twisted the head off it. And then I made it worse by breaking a drill bit off in the bolt...

I think Corbin made a bad choice using a Stainless screw in the aluminum post, and after I do finally get the screw all the way out am going to use a regular grade 5 bolt with some anti-seize going back together.

 

I had the same problem as well as the Corbin seat not fitting properly. No more Corbin products for me.

 

I'm using a Corbin Classic Solo on my Road King and for the most part the seat does everything I need it to do. On of the short comings to the Solo is the back rest. The back rest is pretty limited in it's adjustments. Height is set by the bolt that locates the seat post under the seat. My Best position is with the bolt removed. But, even with it in it's lowest most forward position the back rest is to far back to provide any support.

The seat post on my backrest is made of steel, not aluminum. I have access to a metal shop and have been disassembling the back rest and bending the seat post to move the back further forward. I've gotten it to just about where I want it. But it still needs a little tweaking.

 

Interesting... I'm fairly certain my seat post is made out of aluminum. I tried sticking a magnet to it and it didn't attract.