SDR Motorsports PRO XP-4 / PRO R-4 / TURBO R-4 Hi-Bred Door KitSKU: 730605 SDR MOTORSPORTS INC. PRO XP 4 PRO R 4 TURBO R 4 HI BRED DOOR KIT The Hi Bred revolution continues. DOORS ARE SHOWN IN CUSTOM COLORS WITH CUSTOM GRAPHICS. DOOR KITS SHIP WITH BLACK FRAMES AND PANELS. With over a year in development and testing our new doors for your PRO XP 4 are ready for your ride! We didn't just copy the factory doors or design a bolt on panel to the stock door frames, We started with a clean sheet of paper and and set