Currently on a 2017 renegade 900 Ace. Includes hand muffs. Pretty slick unit, quick release Linq set up. Can’t find model number on the seat but I believe I found it on the Doo website . Photo from website references what it will fit. This seat backrest combo came on a sled I just bought. I was told the brackets were mounted (which they are) but the back rest never used and it looks to be true. I’ll remove the brackets when I have a buyer. Text 616 893-0583