TTPRO Dual Piston Brake Connector Instruction Manual

1. Introduction

The TTPRO Dual Piston Brake Connector (Model AT-042) is a high-strength aluminum alloy component designed to enhance the braking system of mountain bikes. This conversion seat allows for the integration of a dual-caliper setup, suitable for 203mm and 220mm disc rotors, providing sensitive and consistent braking force. Manufactured with a precise CNC process and anodized finish, it offers durability and a lightweight design.

2. Specifications

Figure 1: Product Dimensions and Specifications

3. Package Contents

Figure 2: Package Contents

The package typically includes:

• 1x TTPRO One-to-Two Brake Conversion Seat (Main Bracket)
• 1x TTPRO Oil Pipe Diverter
• 2x Oil Pipes (various lengths)
• Mounting Bolts and Washers (as pictured)

4. Setup and Installation

This section outlines the general steps for installing the TTPRO Dual Piston Brake Connector. Professional installation is recommended if you are unfamiliar with bicycle brake systems.

1. Prepare Your Bicycle: Ensure your bicycle is securely mounted on a stand. Remove the existing brake caliper(s) if necessary.
2. Install the Conversion Seat: Attach the main TTPRO One-to-Two Brake Conversion Seat (bracket) to your bike's frame or fork, aligning it with the disc rotor. Use the appropriate mounting bolts provided. Ensure it is securely fastened.
3. Mount Brake Calipers: Install your two disc brake calipers onto the conversion seat. The design allows for two calipers to operate on a single disc rotor.
4. Connect Oil Pipe Diverter: The oil pipe diverter is crucial for maintaining consistent hydraulic pressure across both calipers. Connect the main brake line from your lever to the input of the diverter.


Figure 3: Oil Pipe Diverter Detail

5. Route Oil Pipes: Connect the two output lines from the diverter to each of the brake calipers. Ensure all connections are tight and free from leaks. Proper routing prevents kinks and interference with moving parts.
6. Bleed the Brake System: After installation, it is essential to bleed your hydraulic brake system to remove any air bubbles and ensure optimal performance. Follow your brake manufacturer's instructions for bleeding.
7. Test Braking: Before riding, thoroughly test the braking system. Check for proper lever feel, consistent braking power, and ensure both calipers engage evenly.

Figure 4: Installed Brake Connector on Bicycle

5. Operation

The TTPRO Dual Piston Brake Connector functions as an adapter to allow two brake calipers to act on a single disc rotor. Once properly installed and the brake system is bled, the operation is integrated with your bicycle's existing hydraulic brake lever. When the brake lever is actuated, hydraulic pressure is distributed evenly through the oil pipe diverter to both calipers, engaging them simultaneously for increased braking power and control.

6. Maintenance

• Regular Inspection: Periodically check all bolts and connections for tightness. Ensure the conversion seat and calipers are securely mounted.
• Cleanliness: Keep the brake components, especially the calipers and disc rotor, clean and free from dirt, oil, or grease.
• Brake Fluid: Monitor brake fluid levels and replace fluid according to your brake manufacturer's recommendations.
• Brake Pad Wear: Inspect brake pads regularly and replace them when worn to maintain optimal braking performance.
• Rotor Condition: Check the disc rotor for wear, warping, or damage. Replace if necessary.
• Oil Pipe Integrity: Inspect oil pipes for any signs of wear, cracks, or leaks. Replace damaged pipes immediately.

7. Troubleshooting

• Uneven Caliper Engagement: If one caliper appears to engage more than the other, re-check the bleeding process to ensure no air is trapped in the system. Also, verify that both calipers are properly aligned with the disc rotor and securely mounted.
• Reduced Braking Power: This can be caused by air in the hydraulic system (requiring bleeding), worn brake pads, contaminated brake pads/rotor, or insufficient brake fluid.
• Noise from Brakes: Squealing or grinding noises often indicate contaminated pads/rotor, worn pads, or improper alignment. Clean components thoroughly and check for wear.
• Caliper Not Sitting Right: Ensure the conversion seat is correctly installed and compatible with your frame/fork and disc rotor size (203mm or 220mm). Incorrect mounting can lead to misalignment.
• Incompatibility with 160mm Rotors: This conversion seat is specifically designed for 203mm and 220mm disc rotors. It is not compatible with 160mm rotors. Using it with an incompatible rotor size may lead to improper function and safety risks.

8. User Tips

• For optimal performance, ensure both brake calipers used with this conversion seat are of the same model and in good working condition.
• Always perform a thorough test ride in a safe area after installation or any maintenance to confirm proper brake function.
• Consider using a torque wrench for all bolt fastenings to ensure they are tightened to the manufacturer's specifications, preventing over-tightening or loosening during use.

9. Warranty and Support

For any questions regarding installation, troubleshooting, or product defects, please contact your retailer or the TTPRO customer support. Keep your proof of purchase for warranty claims.