1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your DYISLAND LD-200Plus 2-Piston E-Bike Hydraulic Disc Brake. Please read this manual thoroughly before installation and use to ensure safe and optimal performance.

2. Package Contents
The DYISLAND LD-200Plus brake kit includes the following components:
- A set of brake levers (left for front brake, right for rear brake)
- A set of brake calipers
- Two 180mm diameter, 2.3mm thick brake rotors
- Three mounting adapters (IS-F203/R180, PM-F180)
- Two sets of mounting screws (M5*10mm, M6*28mm, M6*18mm, M6*16mm)
- Gaskets
- Detachable power-off sensor with 2-pin waterproof connector (300mm / 11.8in cable length)

3. Setup and Installation
3.1 Important Notes Before Installation
- The left handle controls the front brake.
- The right handle controls the rear brake.
- The brake caliper can only be installed on the left side of the bicycle.
- The brake hoses are pre-filled with environmentally friendly mineral oil. No bleeding is required before use.
- The rear caliper hose and control lever are separated for easy internal routing during installation.
3.2 Component Dimensions

3.3 Installation Steps (General Guide)
- Mount Brake Rotors: Attach the 180mm brake rotors to your e-bike's wheel hubs using the provided screws. Ensure they are securely fastened.
- Mount Calipers: Install the brake calipers onto your e-bike's frame/fork. Use the appropriate mounting adapters (IS-F203/R180 or PM-F180) and screws. Remember, calipers must be installed on the left side.
- Connect Hoses: Connect the pre-filled hydraulic hoses to the calipers and brake levers. The front hose is 1000mm (39.37 inches) long, and the rear hose is 1850mm (72.83 inches) long. Ensure all connections are tight to prevent leaks.
- Mount Brake Levers: Secure the brake levers to your handlebars. The left lever is for the front brake, and the right lever is for the rear brake. The handle clamp diameter is 22.2mm.
- Install Power-Off Sensor: Connect the detachable power-off sensor (300mm / 11.8in cable) to your e-bike's motor control system using the 2-pin waterproof connector. Ensure the wiring port is matched correctly. This sensor cuts off motor power when braking for safety.
- Adjust and Test: After installation, adjust the brake levers for comfortable reach and ensure the brake pads are properly aligned with the rotors. Test the brakes thoroughly at a low speed in a safe area before riding.
4. Operating Instructions
The DYISLAND LD-200Plus hydraulic disc brake system is designed for reliable stopping power on e-bikes. The electric induction control system enhances safety by cutting off motor power during braking.
- Brake Activation: Squeeze the left brake lever to activate the front brake. Squeeze the right brake lever to activate the rear brake. Apply both brakes simultaneously for maximum stopping power and control.
- Power-Off Function: The integrated power-off sensor detects when you apply the brakes and signals the motor to cut power. This prevents the motor from pushing the bike while you are trying to stop, improving safety and control.
- Smooth Operation: The hydraulic system provides consistent and powerful braking with minimal effort.

5. Maintenance
Regular maintenance ensures the longevity and performance of your hydraulic disc brakes.
5.1 General Maintenance
- Cleaning: Keep brake calipers, rotors, and pads clean. Avoid getting oil or grease on the brake pads or rotors, as this can severely reduce braking performance. Use a clean cloth and disc brake cleaner if necessary.
- Pad Inspection: Regularly inspect the brake pads for wear. Replace pads when they are worn down to the minimum thickness specified by the manufacturer. The MT600 brake pads are made of sintered metal, offering 15% more braking force and 50% greater wear resistance.
- Hose Inspection: Check hydraulic hoses for any signs of damage, kinks, or leaks. Replace damaged hoses immediately.
- Fluid Level: While the hoses are pre-filled and typically do not require bleeding upon initial installation, monitor brake performance. If braking feels spongy or weak over time, the system may require professional inspection and fluid top-up or bleeding.
- Fastener Check: Periodically check all mounting screws and bolts for tightness.

6. Troubleshooting
If you encounter issues with your DYISLAND LD-200Plus brake system, consider the following:
- Weak Braking Power:
- Check brake pads for wear and replace if necessary.
- Ensure rotors and pads are free from oil or grease.
- Verify that the calipers are properly aligned with the rotors.
- If the issue persists, the hydraulic system may need professional inspection for air in the lines or low fluid.
- Squealing Noise:
- Clean rotors and pads.
- Check for proper alignment of calipers and pads.
- Ensure all mounting bolts are tight.
- Brake Lever Feels Spongy:
- This often indicates air in the hydraulic lines. The system may need to be bled by a qualified technician.
- Check for any leaks in the hydraulic system.
- Power-Off Sensor Not Working:
- Ensure the 2-pin waterproof connector is securely and correctly plugged into your e-bike's motor control system.
- Check the sensor cable for damage.
For complex issues, it is recommended to consult a professional bicycle mechanic.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | DYISLAND |
| Model Number | LD200PLUS |
| Type | Hydraulic Disc Brake |
| Braking System | Hydraulic Disc Brake (Hydraulic Brake Pad) |
| Components | Pads, Levers, Calipers, Rotors, Adapters |
| Material | Aluminum alloy (CNC machined) |
| Weight (Left Front Brake) | 800g |
| Weight (Right Rear Brake) | 800g |
| Front Hose Length | 1000mm (39.37 inches) |
| Rear Hose Length | 1850mm (72.83 inches) |
| Rotor Diameter | 180mm (7.09 inches) |
| Rotor Thickness | 2.3mm (0.09 inches) |
| Brake Pad Type | MT600 Sintered Metal |
| Power-Off Sensor Cable Length | 300mm (11.8 inches) |
| Power-Off Sensor Connector | 2-pin waterproof connector |
| Brake Handle Clamp Diameter | 22.2mm (0.87 inches) |
| Compatibility | Suitable for all electric bicycles, provided the brake is installed on the left side. |
| Origin | Mainland China |
8. User Tips
Based on general user feedback for similar products:
- Pre-Ride Check: Always perform a quick check of your brakes before each ride. Ensure levers feel firm, and pads engage the rotors correctly.
- Bedding-In New Pads/Rotors: New brake pads and rotors require a 'bedding-in' period to achieve full braking performance. This involves several moderate stops from a decent speed, allowing the pad material to transfer evenly to the rotor surface.
- Cable Management: Properly route and secure all brake hoses and sensor cables to prevent snagging or interference with moving parts.
9. Warranty and Support
For warranty information, technical support, or replacement parts, please contact the DYISLAND Store directly through your purchase platform. Keep your proof of purchase for any warranty claims.