Designed by a dedicated team of OME ride control engineers through an exhaustive vehicle - specific development program, ARB Nitrocharger Shock Absorbers deliver the best control, durability and most comfortable ride no matter the terrain. The Nitrocharger Shock Absorber is specifically valved to suit your vehicle and its intended applications, ensuring noticeable improvements in ride, handling, and load - carrying characteristics. Because they are engineered, developed, tested and manufactured entirely in - house by the Old Man Emu team, ARB can guarantee the highest possible quality. All Old Man Emu Suspension systems come with a 3 - year warranty.