Designed for heavy-duty automotive and industrial braking systems, the Wilwood High Volume Tandem Master Cylinder features a durable aluminum construction and multiple bore size options to suit a variety of applications. Available in 1 inch and 1-1/8 inch bores, this master cylinder is engineered to deliver reliable performance whether used with manual or power-assisted brake systems. The 1 inch bore is ideal for manual applications, including classic cars and light trucks, and comes with a pushrod for easy installation. The larger 1-1/8 inch bore is primarily suited for power brake systems, utilizing vacuum or hydraulic assist to provide consistent stopping power. Each unit features fluid outlet ports on both sides of the bore for flexible plumbing options, and the stroke is set at 1.10 inches with a fluid volume ratio of 2:1 between primary and secondary chambers, ensuring balanced brake feel and response. The master cylinders are machined from high-pressure die castings, significantly reducing weight by approximately 75% compared to traditional cast iron units, making them suitable for applications where weight savings are critical. The available finishes—plain, ball burnished, and black e-coat—allow for customization and corrosion resistance in demanding environments. The master cylinders are designed to fit mount flanges from 3.22 inches to 3.40 inches, which are common among domestic vehicles from the mid-1960s onward. For added versatility, a combination proportioning valve kit, including brackets and stainless lines, is available to optimize brake balance and performance in custom or retrofit setups.