[Scoundrel]

I installed these DFR 4-point harnesses in my RZR a couple of years ago, but did not use them much.
In fact, I wasn't wearing one when I rolled it.
So out they came, and I put the stock seat belts back in.
They're a little dirty but not frayed, threadbare or damaged in any way.

I looked at how the seat belts mount in the ACE, and it looks pretty straightforward to remove them and install these.

$75 each or $140/pair, shipped.

 

[Lowall]

I'll go 50 for one shipped to 36804

 

[Cracker 9000]

They install super easy on the ace. You'll need to make a small dremel modification to the right side unless you want the belt folded over. I had to grind away about 3/4" of plastic.