Marketing Description: Street to circle track, OEM to drag race performance, Melling valve spring kits 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. Performance valve locks, seals, and retainers included are designed to increase performance and durability. Whatever your valve spring kit needs may be, Melling has a variety of quality valve spring kits to fit your requirements.