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Skip to content Main Navigation Home Braking Ancillaries Master Cylinders
Why Choose Us We’ve got nearly 20 years of industry expertise, leading in high-quality automotive racing parts since 2007. We’re trusted by drivers across the UK and globally to deliver top performance in motorsport. OBP Motorsport are specialists in precision pedal systems, hydraulic handbrakes, and bespoke fabrication. Every pedal box component is crafted with cutting-edge CNC machinery. It’s all engineered and hand-built in the UK . We have proven success in championship-winning cars, with partnerships including MINI Challenge UK.
Frequently Asked Questions Where does the master cylinder go in a pedal box? This will depend on your pedal box set-up. The most used set up is a 0.625-inch bore to the front brakes, 0.7-inch to the rear brakes and 0.75-inch for the clutch. Larger brake callipers such as 6 or 8 pots may need a bigger bore cylinder to enable more brake fluid moving through the system. An integral master cylinder is ideal in tight spaces like those found in bulkhead-fit pedal boxes because it saves space, simplifies the system, and reduces the chances of leaks by eliminating extra brake lines. This makes the braking system more reliable, which is essential for high-performance applications like motorsport.
What fittings do I need for my master cylinder? The inlet from the reservoir for our master cylinders are 7/16”UNF where the outlet is 3/8” UNF.
How often should I replace my master cylinder? We recommend the master cylinder should be changed every two years in order to provide the best performance possible.
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