Master Cylinder Tandem 1.10 in DIA Black

The Master Cylinder Tandem 1.10 in DIA Black by WILWOOD is an essential brake system component designed for vehicles undergoing serious hydraulic brake upgrades. This tandem master cylinder serves dual-circuit brake systems and is engineered for street performance, road racing, and high-demand braking applications where reliability and responsive modulation are critical. Whether you're building a custom hot rod, restoring a classic muscle car, or upgrading an existing brake setup, this Wilwood unit delivers the pressure consistency required for modern brake calipers and proportioning valves.

The 1.10-inch bore diameter is a proven configuration that balances pedal travel and brake pressure output, making it compatible with both manual and power-assisted brake systems. Wilwood master cylinders feature precision-machined aluminum bodies with hard-anodized black finish for durability and heat dissipation, reducing brake fade during sustained braking events. The tandem design incorporates dual pistons with independent circuits—front and rear—allowing fail-safe operation if one circuit compromises, while the compact footprint simplifies mounting in engine bays with limited clearance. Internal valve geometry is optimized to minimize response delay and deliver firm, linear brake pedal feel without sponginess.

This master cylinder is ideal for hot rod builders, vintage car restorers, and performance enthusiasts upgrading from stock hydraulic systems to aftermarket disc brake setups. Installation requires careful brake line routing and compatibility verification with your existing proportioning valve, residual pressure valve, and caliper configuration. The 1.10-inch bore pairs well with mid-range caliper swept areas and is particularly effective on vehicles weighing 2,500–4,500 pounds with upgraded friction materials. Always bench-bleed the unit before installation and confirm all connections meet DOT specifications for brake fluid compatibility.