RCB E2 SERIES BRAKING SYSTEM
RCB S1 SERIES BRAKING SYSTEM
Recommended Additional Upgrades
RCB E2 Master Brake Pump (Silver Edition) is a classic, highly dependable street-grade component engineered to maximize hydraulic pressure and braking feedback. Acting as a staple in RCB’s performance control catalog, the E2 series utilizes a reliable axial arrangement to significantly increase braking leverage over standard factory master cylinders.
Equipped with an optimal 14mm internal bore piston, this master brake pump provides an excellent balance of lever stiffness and fluid modulation. Finished in a brilliant, clean metallic silver, this setup brings a premium, polished aesthetic to your handlebars while upgrading safety and street performance.
Key Features
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Reliable Axial Hydraulic Design: Engineered in a traditional axial configuration where the internal piston moves parallel to the handlebar. This design provides progressive, highly predictable pressure distribution, giving you excellent linear control over your brakes.
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Versatile 14mm Pressure Piston: The 14mm piston diameter acts as the ultimate street sweet spot. It displaces a sufficient volume of brake fluid per stroke to efficiently drive standard single, dual, or small multi-piston calipers without making the lever feel overly stiff or wooden.
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Cast-In Integrated Fluid Reservoir: Features a robust, low-profile fluid tank cast directly into the master cylinder housing block. This layout ensures maximum resistance to structural impacts and limits mounting bracket vibration, making it ideal for daily commuting and tight street navigation.
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Panoramic Fluid Sight Window: Built with a crystal-clear inspection sight glass on the reservoir face. This allows you to audit your brake fluid level capacity and degradation coloring instantly without having to unbolt the reservoir cap.
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Ergonomic High-Tensile Lever Blade: The contoured silver lever arm is aerodynamically sculpted to minimize wind drag while offering comfortable, natural finger placement that reduces hand fatigue during long rides.
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Built-In Brake Light Micro-Switch: Comes pre-fitted with a highly durable mechanical switch assembly that splices directly into your vehicle’s factory wiring loom to activate your rear brake lights the moment you apply pressure.
Technical Specifications
| Feature | RCB E2 14mm Axial Master Pump Details |
| Series Model | E2 Enhanced Axial Series |
| Piston Bore Diameter | 14 mm |
| Piston Configuration | Horizontal Axial Actuation |
| Coloring / Finish | Polished Metallic Silver Edition |
| Clamping Compatibility | Universal 22 mm (7/8 Inch) Handlebars |
| Fluid Engineering | DOT 3 or DOT 4 Brake Fluid Formulations Only |
| Fluid Port Inlet | M10 x 1.25mm Thread Pitch |
Installation Guidelines
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Drape Protective Covering: Brake fluid acts as a highly destructive chemical solvent on paint, clear coats, and plastic fairings. Before opening the reservoir or unlinking hydraulic lines, completely drape your handlebars, bodywork, and gauges in heavy protective towels.
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Verify Banjo Bolt Threading: The E2 fluid inlet requires an M10 x 1.25mm thread pitch banjo bolt. Utilizing an incorrect factory bolt (such as an M10 x 1.0mm) will cross-thread and permanently strip out the aluminum housing threads. Always install using fresh copper crush washers on both sides of the banjo fitting.
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Execute a Master Cylinder Bench Bleed: Air naturally rises to the highest point of a hydraulic loop, often trapping bubbles right inside the master cylinder piston channel. Before trying to bleed the system down at the caliper, pump the lever slowly a few times and slightly crack open the top banjo bolt to purge trapped air pockets from the primary pressure chamber first.
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Set Symmetrical Horizon Levels: Fasten the master cylinder clamp onto your standard 22mm handlebars at an angle that keeps the top cap of the fluid reservoir as parallel to the horizon as possible when the front wheel is completely straight, ensuring the internal intake port never draws in dry air.
FAQs
Is this master cylinder compatible with my motorcycle?
Yes, it offers universal fitment and works with most motorcycles.
Why is this considered the best value for money?
It provides strong performance, durability, and smooth braking at an affordable price.
What makes a 14mm master cylinder better?
It delivers balanced braking performance with better control and smooth lever feel.
Is this suitable for daily use?
Yes, it is ideal for daily riding and regular commuting.
Does it improve braking performance?
Yes, it provides better response and control compared to stock master cylinders.
Do I need to upgrade other parts?
For best performance, many riders pair it with an RCB brake hose or caliper.
How do I verify authenticity?
Scan the authentication QR code included with the product.
