12/04/2025
📖A tandem master cylinder (TMC) is a brake system component that converts the force of the driver's foot into hydraulic pressure that actuates the brakes:
⚙️How it works
The TMC uses two pistons that work together as a single mechanism. When the brake pedal is pressed, the primary piston applies force to a spring that's attached to the secondary piston. The TMC then feeds brake fluid into the braking circuits, which transfers the pressure to the brake caliper.
⚙️Benefits
A TMC has two separate chambers that isolate the front and rear brake circuits. This design prevents the loss of braking action if there's a loss of brake fluid. It also reduces the chance of a complete brake failure by splitting the front and rear brakes into two systems.
⚙️Here are some examples of tandem master cylinders:
- TMC8
A modular system that can be combined with brake boosters like NOAH, Tie Rod, and Through Bolt. It has a high brake fluid flow rate, even at low temperatures.
⚙️- Wilwood Tandem Master Cylinder (TM1)
Made of aluminum and plastic, this TMC has a 5/8" bore and 1.3" stroke. It also has fluid inlets designed for remote reservoirs.