RCB S1-FL 15mm Break Pump

The RCB S1-FL 15mm Brake Pump is a high-performance motorcycle master brake cylinder designed to improve braking response, control, and overall riding safety. Built with racing-inspired technology, it’s a popular upgrade for riders seeking stronger and more precise braking performance.

🔑 Key Features

⚙️ 15mm Piston Performance

• Equipped with a 15mm piston that increases hydraulic pressure

• Provides stronger braking force and better modulation compared to stock systems

🛠️ Forged Alloy Construction

• Made from forged aluminum alloy for high strength and lightweight durability

• Hard-anodized finish improves corrosion resistance and longevity

🎯 Adjustable Lever Design

• Features a multi-adjustable lever for rider comfort and control

• Ergonomic shape suitable for both daily riding and racing use

💥 Folding Lever Safety

• Lever tip is foldable to absorb impact, reducing damage during falls

🔧 Easy Installation

• Includes brake hose adapter and fluid reservoir

• Compatible with most motorcycles (universal fit)

🔄 Left & Right Variants

• Available in left-hand and right-hand versions

• Suitable for front brake or clutch setups depending on configuration

⚙️ Specifications

• Model: S1-FL

• Piston Size: 15mm

• Material: Forged aluminum alloy

• Finish: Hard anodized

• Fitment: Universal

• Lever: Adjustable & foldable

• Reservoir: External fluid tank included

👍 Benefits

• Sharper and more responsive braking feel

• Better control during high-speed or emergency braking

• Durable construction for long-term use

• Ideal upgrade for modified brake systems (bigger calipers/discs)

⚠️ Important Note

• A 15mm master cylinder is best suited for 2-piston or moderate setups

• For bigger setups (like 4-piston calipers), some riders prefer 17mm for stronger pressure