The Carlisle Brake & Friction Twin Boosted Master Cylinders utilize patented Hydraulic Boost Assist technology to reduce pedal efforts by up to 90% when compared to traditional Master Cylinders. This enables vehicle manufacturers to provide premium braking performance for their customers with automotive pedal feeling for reduced driver fatigue and improved driver comfort. Secondary braking requirements can be achieved without the need for system accumulators generating free space in engine compartment and reducing the brake system cost and complexity and simplifying compliance with regulations.