Recommended Additional Upgrades
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S1 FL 30th Anniversary Special Edition Brake & Clutch Set
Get the Combo set for the ultimate brake system upgrade.
RCB 850mm S-Series Brake Hose is a high-performance, universal braided stainless steel brake line designed to replace standard expansion-prone rubber hoses. The S-Series is engineered to eliminate brake lever sponginess, maximize hydraulic pressure delivery, and provide sharp, immediate braking response under heavy operating conditions.
At 850mm (85cm) in length, this universal hose is perfectly sized for the front brake setup on a wide range of standard motorcycles, naked street fighters, underbones, and maxi-scooters.
Key Features
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Zero-Expansion Braided Core: Constructed with a high-density stainless steel wire braid wrapped around a heavy-duty, low-friction inner Teflon (PTFE) core. This prevents the hose from expanding under hard braking, ensuring 100% of your lever force is transferred directly to the caliper pistons.
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Highly Durable Protective Jacket: Outer-coated with a crystal-clear or colored PVC protective sleeve that safeguards your bike’s paintwork against scratching, while sealing out road grit, water, and debris.
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Precision-Engineered Banjo Fittings: Equipped with premium, corrosion-resistant alloy banjo fittings designed to provide a leak-proof seal and resist stripping under high torque loads.
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Optimal Heat & Pressure Resistance: Built to handle extreme thermal loads and high pressure spikes, preventing brake fade during aggressive track riding, steep descents, or heavy stop-and-go traffic.
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Universal Configuration: Features standard 10mm (M10) banjo eyelets on both ends, allowing seamless compatibility with aftermarket or OEM master cylinders and calipers from major brands like RCB, Brembo, Nissin, and ByBre.
Technical Specifications
| Feature | RCB S-Series Brake Hose Details |
| Series | S-Series High-Performance |
| Hose Length | 850mm (85cm / 33.4 inches) |
| Inner Core Material | Teflon / PTFE |
| Outer Wrap Material | Braided Stainless Steel with PVC Sleeve |
| Banjo Eyelet Size | 10mm (M10 Universal Standard) |
| Position | Universal (Typically Front Brake Assembly) |
| In the Box | 1x Braided Brake Hose with basic sealing washers |
Fitment & Application Guidelines
Before purchasing a universal line, it is essential to trace and measure your motorcycle’s existing routing to confirm the 850mm length is ideal:
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Front Brake Upgrade: The 850mm length is the industry standard for front brake lines on most standard commuter bikes, naked street fighters (such as the Yamaha MT-15, Suzuki Gixxer, Honda CB150R), and sport underbones.
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Long-Rear Setup: Can also be utilized as a rear brake line for specific maxi-scooters or stretched custom bikes where the distance between the handlebar/foot master cylinder and the rear caliper is exceptionally long.
Installation Checklist
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Banjo Bolt Alignment: Thread the banjo bolts by hand into the master cylinder and caliper to prevent cross-threading. Ensure the angle of the hose eyelets allows a smooth fluid path without twisting the line.
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Fresh Crush Washers: Always use brand new copper or aluminum crush washers (two per banjo bolt: one on each side of the hose fitting) during installation. Reusing old washers frequently leads to microscopic fluid leaks.
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Steering & Suspension Clearance: Once installed, turn the handlebars fully from lock-to-lock and compress the front forks. Verify that the brake line does not get pinched, kinked, stretched tightly, or rub against moving components like the front tire or mudguard.
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Thorough Bleeding: After securing the line, fill the reservoir with the manufacturer-recommended brake fluid (DOT 3, DOT 4, or DOT 5.1). Bleed the system completely until all air bubbles are eliminated and a firm, solid feel is restored to your brake lever.
