The DRT Motorsports Polaris RZR Pro XP / Pro R 4 Rear Door Arm Rests are essential for every Pro XP 4 rider. The biggest complaint we hear about the Pro XP4 is the lack of rest for your arm while driving or riding as a passenger. The DRT Motorsports armrests solve this problem with a comfortable double-stitched carbon fiber vinyl arm rest and hold-down grip. The armrests were specifically designed and positioned for riders to be able to better lock themselves down into the car at high speed or in rough terrain. The DRT RZRPROAR2 armrests work with most door bags including the PRP Pro XP door bags.