Recommended Additional Upgrades
RCB E3 Plus (E3+) Master Brake Pump with Adjustable Lever represents the next generation of everyday street-performance hydraulic control. Engineered to phase out vague, low-feedback OEM master cylinders, RCB E3+ series combines a robust, corrosion-resistant alloy casting housing with an integrated clear transparent reservoir and a highly adjustable reach setup.
Offering an instant boost in structural rigidity over standard assemblies, this master cylinder brings smooth fluid displacement, an aggressive styling profile, and consistent bite points to sportbikes, underbones, and automatic scooters alike.
Key Features
Integrated Crystal-Clear Transparent Reservoir: Features a high-impact, transparent fluid tank body built directly into the main master shell structure. This layout allows for immediate visual monitoring of your brake fluid volume and clarity without needing bulky external pots or loose line routing.
14mm Efficiency-Optimized Piston Bore: Packed with a precision-bored 14mm hydraulic piston chamber. This size establishes the ideal pressure-to-volume ratio needed to drive single-piston and twin-piston calipers (like the RCB S3 range), completely eliminating the spongy feeling of stock controls.
Multi-Stage Dial Span Adjustment: Built with an integrated click-dial adjust mechanism right on the front of the handle block. Riders can effortlessly adjust the starting reach between the lever blade and the handlebar grip to accommodate varying hand dimensions or riding glove preferences.
High-Durability Cast Alloy Matrix: Crafted from a dense, fatigue-resistant aluminum alloy compound designed to withstand high operational line pressures without physical wall expansion or housing flex during sudden emergency stops.
Anti-Corrosive CNC Weather Finishing: Crowned with a premium CNC-finished reservoir cap and heavy-duty surface treatment that delivers deep immunity against harsh sunlight UV-fading and corrosive brake fluids ($DOT\ 3$ or $DOT\ 4$).
Technical Specifications
| Feature | RCB E3 Plus (E3+) Master Pump Details |
| Product Line Family | E3+ Plus High-Comfort Street Performance Series |
| Mechanical Geometry | Enhanced Axial / Horizontal Hydraulic Layout |
| Piston Bore Diameter | 14.0 mm (Responsive Brake & Clutch Actuation) |
| Fluid Containment | Clear Integrated Transparent Reservoir Chamber |
| Structural Base | High-Density Precision-Cast Aluminum Alloy |
| Fluid Port Feed Thread | Standard M10 x 1.25mm Thread Pitch |
| Handlebar Frame Clamping | Standard 22.2mm (7/8″) Universal Handlebar Clamp |
FAQs
Is this master cylinder compatible with my motorcycle?
Yes, it offers universal fitment and works with most motorcycles, especially 150cc to 350cc bikes.
How is E3+ different from E2?
E3+ provides improved control, better lever feel, and enhanced overall performance compared to E2.
Is E3+ better than E4+?
E4+ is more aggressive, while E3+ offers a balanced setup for daily use and comfort.
What makes a 14mm master cylinder good?
It provides smooth and controlled braking without being too aggressive.
Is this suitable for daily use?
Yes, it is ideal for daily commuting and regular riding.
Does it improve braking performance?
Yes, it provides better response and control compared to stock systems.
How do I verify authenticity?
Scan the authentication QR code included with the product.












RCB E2 SERIES BRAKING SYSTEM
RCB S1 SERIES BRAKING SYSTEM




