National Spring, Inc. is a full service spring and suspension manufacturer located in San Diego, California. The company was founded in 1947 by George R. Hill, and through years of hard work and commitment to quality, he and his family established a reputation for building the highest quality springs available. For years our custom and off-road springs have been the standard to which all others are compared.
We specialize in custom leaf springs and coil springs for cars, trucks, off-road vehicles, RVs and heavy equipment. Each set of custom springs are engineered to your specifications. Many variables are considered during the computerized design process, including ride height, dry weight and payload capacity. In most cases, our progressive design will improve the ride characteristics of your vehicle. Our custom springs are hand fit using American steel. We also carry a variety of OEM replacement products.