Ski Doo Seat Saddle 2-Up 1 + 1 Fits XP XR XS Chassis MXZ Renegade OEM 860200665. GOOD USED 2UP SEAT FITS REV-XM XP XS XR XU TUNDRA (EXCEPT GTX, GRANDTOURING) HAS A FEW CHECK MARKS ALONG THE LEFT SIDE BOTTOM EDGE AND ON THE FRONT EDGE. We are a family owned & operated snowmobile, motorcycle, and ATV and PWC parts distributor in Vermont with an established retail location since 1984. Al's Snowmobile and ATVparts.