OBP Integral Master Cylinder for Brakes and Clutch

OBP Integral Master Cylinder for Brakes and Clutch

The OBP master cylinder features a space-saving, integral design that is ideal for bulkhead-fit pedal boxes, making it perfect for installations where the cylinder is conveniently placed in the engine bay. Its built-in reservoir eliminates the need for additional brake lines required in a remote setup, ensuring leak-free operation and a cleaner, more efficient system.

This master cylinder is designed for compatibility, featuring a 2.25” (57mm) bolt-hole spacing that matches most standard mounting patterns in the industry. This makes it an excellent choice for a wide range of applications, including automotive, motorsport, agriculture, hydraulic systems, and more.

Key Features of the Integral Master Cylinder:
– Lightweight at just 350g
– Vertical mounting flange for easy installation
– 3/8”-24 UNF outlet for reliable connections
– Standard 84mm push rod length
– M8 bolt hole size for universal mounting

Choosing the Right Master Cylinder Bore Size

When selecting the appropriate master cylinder size for automotive and motorsport applications, a general rule of thumb is as follows:

– 0.625-inch Bore for front brakes
– 0.700-inch Bore for rear brakes
– 0.750-inch Bore for the clutch
– Options of 0.812-inch, 0.875-inch, or 1-inch are also available.

However, the size may vary depending on the dimensions of your brake calipers, as some calipers require more brake fluid for optimal performance.

Fittings and Measurements:
– Inlet Fitting: 7/16-inch-20 UNF
– Outlet Fitting: 3/8-inch-24 UNF
– Push Rod Thread: 5/16-inch
– Pushrod Length: 84 mm
– Bolt Hole Spacing: 1/4-inch

To provide context, the 3/8”-24 UNF outlet means that the outlet port of the master cylinder has a diameter of 3/8 inches, with 24 threads per inch, according to the UNF (Unified National Fine) threading standard. This ensures a strong, leak-resistant connection, which is critical in high-pressure applications like the braking systems of racing vehicles.

Why Choose OBP Motorsport?

When it comes to braking accessories, OBP Master Cylinders have established themselves as one of the most popular options on the market. Featuring an innovative internal double-seal design, these master cylinders are renowned for their exceptional reliability, affordability, and high performance.

Whether you’re pushing the limits on the racetrack or working in demanding industrial environments, OBP Master Cylinders are designed to deliver outstanding results where high-quality components are essential.