Master Cylinder Tandem w / Brkt Prop Valve 1in

The Master Cylinder Tandem with Bracket Proportioning Valve 1in from Wilwood is engineered for custom brake system builds where precise hydraulic control and compact integration are non-negotiable. This tandem master cylinder serves as the heart of a high-performance braking setup, designed for street rods, custom trucks, and modified vehicles that demand superior stopping power with proportional braking bias. Whether you're converting an older chassis to modern hydraulics or fine-tuning a dedicated track car, this unit delivers the reliability and performance that serious fabricators and mechanics expect.

Wilwood's tandem design features dual independent brake circuits—one for front axles and one for rear—allowing you to dial in proportioning valve settings that optimize weight transfer dynamics and prevent lock-up during hard braking. The integrated proportioning valve with 1-inch bore sizing delivers consistent pressure modulation across both circuits, critical for maintaining even brake pad wear and predictable pedal feel. The included mounting bracket accommodates firewall or frame-rail installation in confined engine bays, while the compact 12.55 × 9.35 × 14.4 inch footprint minimizes packaging challenges typical in restomod and custom builds. Weighing just 5.61 pounds, it adds minimal unsprung mass while maintaining the structural integrity required for repeated high-performance stops.

This master cylinder is ideal for fabricators, restoration shops, and DIY enthusiasts rebuilding vintage muscle cars, hot rods, or custom trucks where OEM braking systems fall short. It pairs seamlessly with Wilwood calipers, rotors, and proportioning hardware for a fully integrated system, and the tandem configuration ensures safety compliance for street-driven vehicles requiring dual-circuit braking. Installation requires careful plumbing to brake distribution blocks and proper proportioning valve tuning to your vehicle's front-to-rear weight ratio—a task best handled with fabrication experience or professional guidance. The 1-inch bore is a proven standard in mid-size custom applications, delivering responsive pedal modulation without excessive travel or sponginess.