Brembo Master Cylinder, Brake, PS 11 Thumb, without Reservoir, without bracket, Axial - X985770

Brembo Master Cylinder PS 11 Thumb Brake - Axial X985770

Upgrade to the Brembo PS 11 Thumb Master Cylinder (X985770). Axial design for precise control on race bikes. Reservoir & bracket not included. 

The Brembo Master Cylinder PS 11 Thumb (X985770) is a high-performance, race-focused component engineered for riders who demand unparalleled rear brake control. This is the official Brembo 'Thumb' master cylinder, utilizing an axial piston with an $11 \text{mm}$ diameter, specifically designed to be operated by the rider's thumb. Used predominantly in professional racing, including MotoGP and World Superbike, this system allows riders to modulate the rear brake mid-corner without having to reposition their foot. Its compact, lightweight construction, achieved through precision machining, ensures maximum performance and durability under extreme conditions.

Please Note: This specific part number (X985770) is supplied without a fluid reservoir and without the handlebar mounting bracket, making it ideal for custom installation or as a direct replacement part where existing ancillary components will be utilized.⁴ It requires pairing with a separate reservoir kit and a dedicated mounting solution for thumb brake application. Elevate your track performance with the proven reliability and precision of Brembo Racing technology.

Best Uses

1. Professional Racing & Track Days: Essential for high-level competitive riding where fine-tuning the rear wheel speed mid-corner is critical.
2. Superbike & MotoGP Applications: Standard setup for elite riders looking to manage weight transfer and prevent wheelies out of turns.
3. Custom Motorcycle Builds: Perfect for advanced setups requiring precise, thumb-operated rear braking, often replacing or complementing a standard foot lever.
4. Riders with Foot/Ankle Injuries: Provides an alternative rear braking mechanism for riders unable to use a traditional foot pedal.

 Features

1. PS 11 Piston Diameter: Features an $11 \text{mm}$ piston, optimized for superb modulation and feel in a thumb-operated configuration.

2. Axial Pump Design: Utilizes a standard axial flow design for reliable, powerful, and consistent pressure delivery.

3. Race-Spec Construction: Built with high-grade materials to withstand the rigorous demands and high temperatures of track use.

4. Compact & Lightweight: Engineered for minimal weight and bulk, crucial for reducing unsprung mass and clutter on race bikes.

5. Thumb-Optimized Lever: Lever is specifically shaped and positioned for easy and intuitive operation by the rider's left or right thumb (depending on mounting location).

 Benefits

1. Enhanced Mid-Corner Control: Allows precise rear brake application without disrupting body position, helping to tighten corner lines and manage traction.

2. Improved Exit Speed: Enables fine-tuning of wheelie control when aggressively accelerating out of corners, translating to faster lap times.

3. Superior Braking Feel: Brembo's precision engineering provides the rider with immediate and clear feedback, increasing confidence.

4. Flexible Mounting Options: The design allows for versatile placement, most commonly on the left handlebar for left-hand thumb operation.

5. Proven Racing Reliability: Utilize the same technology trusted by professional racing teams globally, ensuring top-tier performance and safety.