I didn't realize the seat pan was different. In which case a different seat would make a difference.

 

This is the reach seat - Reduced Reach Seat - 51738-07 | Harley-Davidson Europe (harley-davidson.com)

If you compare it to what is standard on the XL1200T I think they are essentially the same it terms of the seating area.

 

This is an (old) actual picture of the Reach seat on an Iron. Granted, its not
at a good angle. I do not have a side-by-side pic of the "standard" Iron seat
and this Reach seat as both seats are in "off site" storage....





I will say the current mustang cyclone solo seat is quite close to the frame if that might be an option..
It sits on a fiberglass mounting plate. I've ridden a whole tank (3 gallons) on it before stopping, but
I will admit, its not a long haul (10 hour days) type seat. Here's a pic;





hth,

T.

 

Super Reach Solo Seat - 52000207 | Harley-Davidson Europe (harley-davidson.com)