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Brembo Racing PS10x19 Front Brake Master Cylinder with Integrated Reservoir – MX / Off-Road – XA2B3A0

Built for motocross, enduro, and aggressive off-road riding, the Brembo Racing PS10x19 Master Cylinder delivers the precise braking feel and race-ready performance trusted by professional riders worldwide. Designed specifically for single-disc front brake systems, the XA2B3A0 combines lightweight construction, progressive braking response, and exceptional modulation in a compact integrated-reservoir design.

Featuring a 10mm piston bore paired with a 19mm lever ratio, this axial front brake master cylinder provides excellent control and predictable stopping power in demanding terrain. The integrated fluid reservoir creates a cleaner installation while reducing external hoses and components for improved durability and simplified setup.

The hard-anodized black finish and cast aluminum construction offer long-lasting performance under extreme riding conditions, while the adjustable lever helps riders fine-tune comfort and braking feel for racing or technical trail use.

Key Features

• Genuine Brembo Racing front brake master cylinder
• Designed specifically for MX, Enduro, and off-road racing
• Integrated brake fluid reservoir for compact installation
• 10mm piston diameter with 19mm lever ratio
• Progressive and highly controllable braking feel
• Lightweight cast aluminum construction
• Hard anodized black finish for durability and corrosion resistance
• Axial master cylinder design
• Optimized for single front brake disc systems
• Adjustable lever for personalized ergonomics
• Fits 22.5mm handlebars
• Uses DOT 4 brake fluid
• Race-proven Brembo Racing performance

Technical Specifications

Race-Tuned Braking Performance

The PS10x19 configuration is engineered to provide a strong yet highly controllable braking response for off-road conditions where traction and precision matter most. The 10mm piston size increases hydraulic leverage and enhances modulation, helping riders maintain confidence on loose surfaces, technical descents, and aggressive braking zones. Riders commonly note that smaller piston master cylinders increase lever travel while improving brake feel and sensitivity.

Brembo specifically developed this master cylinder for motocross and enduro competition, emphasizing immediate response, linear braking behavior, and exceptional rider feedback even in extreme conditions.

Integrated Reservoir Design

Unlike traditional remote-reservoir systems, the XA2B3A0 features an integrated fluid reservoir that simplifies installation and reduces external hoses and fittings. This compact design creates a cleaner cockpit setup while minimizing potential leak points and improving overall reliability in harsh off-road environments.

Installation Notes

When upgrading your brake master cylinder, additional components may be required depending on your motorcycle setup:

• Compatible banjo bolt(s)
• Fresh DOT 4 brake fluid
• Brake line configuration matching your application

For racing applications, pressure-switch banjo bolts are typically not included. Street riders requiring brake light activation should use pressure-switch-equipped banjo bolts.

Spare Parts Availability

Replacement service parts are available, including:

• Lever Spindle: 10279812
• Lever: 10459478
• Clamp: 10281594
• Dust Cover: 10353051
• Anti Bubble: 110477110
• Lever Adjuster: 10571730

Why Choose Brembo Racing?

Brembo Racing components are developed using technology proven at the highest levels of motorcycle competition. Their braking systems are trusted across motocross, enduro, road racing, and MotoGP thanks to their unmatched consistency, rider feedback, and reliability under extreme conditions.