The Shimano BL-MT200 Brake Lever Diaphragm is a genuine spare part designed specifically for Shimanos entry-level hydraulic disc brake levers. Its an essential component for maintaining the internal oil reservoir system of your brake lever.

Maintains Reservoir Pressure Balance: This rubber diaphragm sits between the brake lever cover and fluid chamber, allowing the brake system to maintain consistent pressure as fluid volume changes. It helps prevent air from entering the system and ensures stable brake feel.

Supports Long-Term Brake Performance: A worn or damaged diaphragm can lead to inconsistent lever action and compromised braking. Replacing it helps preserve the original braking response and extends the life of your BL-MT200 hydraulic lever system.

Durable and Easy to Install: Made from durable rubber materials compatible with Shimanos mineral oil, the diaphragm resists expansion, leakage and wear. Its press-fit design makes installation quick and tool-free, requiring only basic maintenance steps.

Whether you’re rebuilding your brake lever or doing preventive maintenance, replacing the diaphragm restores braking performance.