On my 2008 Ultra I got an adjustable and reccomend it highly... The height is kinda tricky (5 position) andI ended up shimming up the height as I am 6'3" and needed a little higher support point... I am 230 lbs and push hard on the back rest on long trips to get re-situated... no problems...

 

I have the adjustable and I am glad I spent the money to have it added. You can also use the adjustable backrest with a mustang seat.
I had the fixed one on my Road King and had no complaints with that one either. I just really like being able to move the backrest after a few hours in the seat if I want to.

Jeff

 

Tried the HD adjustable...didn't like it at all. Went with the Mustang. Love it!!! Cheaper & adjusts mo betta.

 

Fixed didn't lean back far enough for me. Adj, a big improvement IMO.

 

Adjustable and the sundowner - love it. For the short solo trips I throw the corbin solo on and usually can't wait to put the other back on[:@] - but it looks good.

 

Looks like either one will work. I have the adjustable and it normally stays where its at but on my trip to Ohio it was nice to move it. I have had no problems with any rattles or breakage.

Regardless of which way you go, it made a ton of difference on my Street Glide. Plus at the time I didn't have a passenger backrest or luggage rack so it gave me a place to slip the T bag on. Worked fine, lasts a long time.

 

I'm quite happy with my adjustable and the rattle in the mount doesn't matter to me because it only does it when I'm not actuallyriding the bike. What I don't know is if you want to strip down to the SG look can youchange out to a different seat and not have the mount in the way. Maybe someone else could weigh in on that?

 

any back support is good but if money is no object get adjustable.

 

+1 to Timex. I have a very bad back and also use the Mustang Adjustable. It makes all the difference in the world to be able to select a slightly different back position for some period of time during a long ride. Around town it stays pretty much in place. I did cut 3/4 inch off the backrest slide bar to put the rest at a slightly lower position. Love my Mustang Back Rest! .......... BC