Welcome to Professionally Engineered Products

We offer retrofit and replacement seat belt systems for vintage Porsche, Mercedes, BMW, and Volkswagen vehicles. We specialize in three-point retracting retrofit systems, but also offer some non-retracting and lap-only systems. The standard color of all our systems is black; custom colors are available on many of the systems we offer. All of our systems are made with OEM quality components and materials, are legal for street use world wide, and are properly engineered by our resident degreed and licensed mechanical engineer.