Pro Armor Lower Door Inserts Polaris RZR 900S, 900XC These door inserts are all aluminum .080" construction to save weight and ensure strength and durability for any type of riding or racing Direct bolt on to your factory 900S or 900XC door with minimal drilling using a drill and 1/2" drill bit Hemmed edges for a refined edge and more rigid panel; Bolts directly to factory half doors to complete the full door look These inserts will NOT work on any other RZR 900 except the 900S and the 900XC