TEKTRO HD-E3520 E-Bike Hydraulic Disc Brake Set (Left Front 900mm Connected / Right Rear 1850mm Split) - OEM Bulk

Key Specifications

• Brand: TEKTRO
• Model: HD-E3520 / E3520 Series
• System Type: E-Bike Hydraulic Disc Brake Set with Integrated Power Cut-Off Sensor
• Position & Hose Length:
  • Left Front: 900 mm (Pre-Connected & Fully Bled)
  • Right Rear: 1850 mm (Split / Disconnected Hose for Internal Routing)
• Caliper Type: 2-Piston Open System Hydraulic Caliper
• Lever Design: Ergonomic 3-Finger Aluminum Lever Blade with Integrated Sensor Switch
• Sensor Connector: Electronic Motor Cut-Off Sensor (Standard E-Bike Connection)
• Fluid Type: Tektro High-Performance Non-Corrosive Mineral Oil
• Mount Standard: Post Mount (74mm)
• Color: Anodized Black
• Condition: 100% Authentic Brand New
• Packaging: OEM Bulk (Protective Polybag)

Why Choose Tektro HD-E3520 E-Bike Brakes?

1. Integrated E-Bike Motor Safety Cut-Off

Each brake lever features a factory-integrated electronic sensor switch that signals your e-bike controller to cut power to the hub or mid-drive motor immediately when braking, maximizing safety and extending brake pad life.

2. Split Rear Hose for Easy Internal Routing

The 1850mm rear brake hose is disconnected from the factory so you can thread the hose through internal frame ports and chainstays effortlessly without creating fluid leaks or requiring complete teardowns.

3. Ready-To-Install Connected Front Brake

The 900mm front brake comes completely assembled, bled, and sealed right out of the polybag, allowing for quick bolt-on mounting to standard post-mount suspension or rigid forks.

Compatibility & Installation Notes

• Frame & Hose Fitment: Designed for standard e-bike frames requiring internal routing (rear 1850mm split) and standard front routing (front 900mm connected).
• Motor Cut-Off Wiring: Verify sensor plug pin compatibility with your e-bike motor controller (2-pin / 3-pin standard e-bike brake connector).
• Rotor & Adapter Compatibility: Fully compatible with 160mm and 180mm Tektro, Shimano, and TRP rotors (rotors and mounting adapters sold separately).
• Installation Tip: Once the rear split hose is routed inside the frame, connect it securely to the lever fitting. A quick bleed on the rear line is recommended after final assembly for optimal lever firmness.

Frequently Asked Questions (FAQ)

Q: What does "Left Front Connected / Right Rear Split" mean?
A: The Left-Front 900mm brake is fully assembled and pre-bled for immediate mounting. The Right-Rear 1850mm brake comes with the hose disconnected from the lever so you can route the cable inside your bike frame cleanly before linking the fluid connection.

Q: Does this brake set include electric power cut-off sensors?
A: Yes! Both left and right levers include integrated motor cut-off sensors designed specifically for e-bikes.

Q: Are rotors or mounting adapters included?
A: No, this listing includes front/rear levers, calipers, e-bike sensor wires, and pre-charged hydraulic lines. Rotors and post-mount adapters are sold separately.

Q: Is this authentic Tektro?
A: Yes, 100% genuine Tektro factory components sourced directly through authorized OEM supply channels.

Q: Fast Domestic Shipping?
A: Yes, all orders ship directly from our US warehouse for quick delivery.