This tandem master cylinder kit, designed for heavy-duty automotive and industrial applications, offers reliable brake pressure actuation combined with simplified fluid control. The 1.12-inch bore master cylinder features a durable, polished finish and a slotted flange mounting system, ensuring secure installation and long-lasting performance. The included combination proportioning valve maintains full isolation between front and rear circuits, providing precise brake modulation and reducing system complexity. The valve’s black E-coat finish enhances durability and provides a sleek, performance-oriented appearance. Stainless steel fluid tubes, pre-bent with plated steel nuts, facilitate straightforward, bolt-on installation between the proportioning valve and master cylinder, reducing setup time and ensuring leak-proof connections. The kit also includes a mounting bracket and stainless steel button head fasteners, designed to withstand harsh conditions and provide rust-free, dependable operation. Whether upgrading a custom brake system or maintaining a fleet of heavy-duty vehicles, this kit offers a comprehensive solution for reliable, high-performance brake control.