POLARIS RZR XP4 1000 RZR XP1K XP 1000 Stealth 4 Door Inserts #P144210BL The stealth design adds protection and style to your rzr Easily installs in minutes. All aluminum .080" construction to save weight and ensure strength and durability Direct bolt on to your rzr xp1k and rzr xp4 1000 with no drilling *new* stealth bomber inspired design door inserts