Ok ok don't get excited. I put the whole there deliberately .
Why would you do that?
cause I could not find a way to glue the Utopia Backrest on.

Seriously took about an hour to install this beautiful backrest. We got the one that matches both seat materials. It is gorgeous, the workmanship is superb and the instructions are perfect. He even warns you about the tube sleeves in the back hinges.

Cautions:
The spring clip that holds the piston to the seat will fly. It is also a bear to get back on.

The captive nuts and the barrel sleeves can get away from you and hide in bad places.

When you start the cut in the seat, use a sharp, none aerated knife, I used my pocket knife, just to make the initial incision, not to cut the foam. For the foam use the suggested serrated knife.

When drilling into the seat pan, controll the drill so as not to come out the other side of the seat

PM ME IF YOU HEVE QUESTIONS OR CONCERNS.

Measure twice...

Special tools:
These are not required but make the process a bit easier
Crochet hook to remove the foam from the drilled holes
a clothe tape measure will help when measuring around curves
A silver fine point sharpie marker
A ton of patience cause BRP does not make anything easy to get at.