Buy the Royal Enfield 1010255/A Rear Brake Master Cylinder Assembly for compatible Royal Enfield Thunderbird, Classic and Bullet motorcycles from Enfield And Activa Zone (EAZ Store).
The rear brake master cylinder is an important component of the hydraulic braking system. It converts pressure applied through the rear brake pedal into hydraulic pressure, which operates the rear brake caliper.
If your rear brake pedal feels spongy, braking pressure is weak, or the master cylinder is leaking brake fluid, the assembly may require inspection or replacement.
Use the correct Royal Enfield part number to ensure proper fitment and reliable braking performance.
Key Features
- Brand: Royal Enfield
- Part Number: 1010255/A
- Product Name: Master Cylinder Assembly
- Application: Rear hydraulic brake system
- Position: Rear brake
- Product Type: Rear brake master cylinder
- Designed to generate hydraulic pressure for rear braking
- Replacement component for a worn, leaking or damaged master cylinder
- Suitable for specified compatible Royal Enfield models
Vehicle Compatibility
Catalogue and supplier-listed applications:
- Royal Enfield Thunderbird 350
- Royal Enfield Thunderbird 500
- Royal Enfield Thunderbird X 350
- Royal Enfield Thunderbird X 500
- Royal Enfield Classic 350 – compatible variants
- Royal Enfield Classic 500
- Royal Enfield Bullet 500
Fitment Note: Compatibility with Bullet 350 is not independently confirmed for part number 1010255/A. Verify the original part number, ABS configuration, model year and mounting arrangement before ordering.
Package Contents
- 1 × Rear Brake Master Cylinder Assembly (1010255/A)
Brake pedal, brake hose, reservoir components, mounting hardware and brake fluid are not included unless specifically mentioned in the supplied package.
Installation & Important Safety Note
This is a safety-critical braking component.
- Professional installation is strongly recommended.
- Use the manufacturer-recommended brake fluid.
- Bleed the rear brake hydraulic system after installation.
- Check for fluid leakage and correct brake pressure.
- Test the braking system thoroughly before riding.










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