Triangle Springs, a part of Triangle Suspension Systems, is a trusted manufacturer and designer of leaf springs for heavy duty trucks and trailers. Triangle Springs provides leaf spring solutions and repair parts to protect your investment. Parts exceed OE and aftermarket standards and deliver performance consistently.Triangle Springs is proud to provide customers with cost-effective, high-quality solutions. The innovation behind their solutions includes unique anti-corrosion properties so customers can stay on the road longer.Triangle has headquarters in DuBois, Pennsylvania. Triangle takes pride in producing all products in the United States.