Made In USA. Street to circle track, OEM to drag race performance, Melling valve springs cover the market and your requirements. Standard, mid-range, heavy-duty and race ready applications are available from Melling in a variety of wire sizes, materials and spring pressures. Melling spring designs include standard and dual springs with and without dampers as well as new beehive applications. Whatever your valve/rocker spring needs may be Melling has a variety of quality valve springs to fit your requirements.