Upgrade your BMC or Triumph A Series engine with ARP's 206-5401 main stud kit. Designed for performance and custom applications, this set is made from durable chromoly material to ensure reliable strength and longevity. Each kit comes complete with all necessary mounting hardware, making installation straightforward and hassle-free. With part brand recognition and a solid reputation for quality, ARP is a go-to for enthusiasts and professionals alike. The included studs are precision-engineered for a perfect fit, providing peace of mind that your engine's integrity will be maintained. Whether you're building a race engine or restoring a classic, these main studs are an essential component for a successful project.