I have a Harley Davidson Signature Series Rider w/ Backrest for sale. The HD part number is: 51922-09.

From the Harley Davidson site:

Fits '00-later FLST, FLSTC, FLSTNSE and FLSTSC, '00-'06 FLSTF and '00-'05 SoftailŽ models (except FXSTD). Also fits FLSTN models with removal of stock luggage rack. '00-'06 FLST, FLSTC, FLSTF, FLSTSC and '00-'05 FX SoftailŽ models require separate purchase of Seat Bracket P/N 51949-09. Seat width 16.0"; passenger pillion width 14.0".

The seat is in excellent condition as can be seen in the pictures. It's a very comfortable seat, especially with the backrest (for me anyways because I have lower back issues). The backrest is detachable though.

I no longer have a need for the seat so that's why I'm selling it.

I will take $350 shipped.

Thanks for looking, PM me if interested.

 

Pictures added

 

My 2005 stock 2 up seat uses bolts on side too
Does yours accommodate those?

 

Interested in your seat. Don't know how to send a PM. Thanks!