Located in Boise, Idaho Factor 55 are an engineering design firm specializing in mechanical design and analysis. Their staff has extensive experience in the Aerospace, Defense, and semiconductor industry but we have always been passionate about off-roading throughout their careers. All of Factor 55 products are designed in house using the latest 3D CAD software and optimized using Cosmos FEA (Finite Element Analysis). Before Factor 55 releases any products to the public, they also perform a destructive test on each design with the assistance of a test facility equipped with test measurement and data recording equipment. Check out the Prolink Factor 55 winch shackle mount below.