Rear wheel brake cylinder for improved braking performance High-quality, affordable product from FORST Essential for vehicle safety and braking reliability The rear wheel brake cylinder is a critical part of your vehicle's braking system, playing an essential role in ensuring safe and effective stopping power. Manufactured by FORST, this brake cylinder is designed to meet high-quality standards, offering both reliability and affordability. If you're experiencing symptoms like a spongey brake pedal, poor brake response, or fluid leakage around the wheels, it may indicate that the wheel cylinders have worn out and need replacing.