Rear Harness Passthrough by RR | Jan 25, 2018 | RZR XP 4 1000 | 0 comments Hi there, Picked up my new xp4 1000 last night and today am ordering harness’s. The dealer told me I only needed to get passthroughs for the front seats…. after looking at the stock seats I cant see why i’d only need two and not 4. Any insight? Utah RZR Rentalswhence Submit a Comment Cancel replyYou must be logged in to post a comment.