Tektro HD-E395 Hydraulic Disc Brake Set Front and Rear, eBike Specific

Upgrade your e-bike’s stopping power with the Tektro HD-E395 Hydraulic Disc Brake System. Designed specifically for high-speed E-City, E-Trekking, and heavy cargo bikes, the HD-E395 combines heavy-duty thermal performance with seamless electronic motor-cut-off integration for maximum safety on every ride.

The Ultimate Mechanical-to-Hydraulic E-Bike Upgrade

Tired of noisy, underpowered mechanical disc brakes or squishy, budget factory hydraulics?

Many popular e-bikes—including older Rad Power Bikes (such as the RadRunner, RadWagon, and RadRover) as well as entry-level cargo bikes equipped with low-spec brakes like Zoom, Changstar, or generic cable-actuated calipers—struggle under the weight of a heavy bike, rider, and cargo. Frequent cable adjustments, poor lever modulation, and rapid pad wear are constant headaches.

Key Features

• Thicker 5mm E-Bike Brake Pads: Equipped with extra-thick 5mm brake pads (such as Tektro E11.11), providing significantly more wearable material compared to standard 4mm bicycle pads.

• Exclusive 2.3mm Rotor Compatibility: Caliper body and pad clearances are engineered exclusively for 2.3mm thick heavy-duty rotors (will not fit standard 1.8mm rotors).

• Integrated E-Bike Motor Sensor: Built-in electric cut-off switch wire instantly disengages the motor when the lever is pulled, ensuring safer, controlled stops.

• Ergonomic 3-Finger Lever: High-durability lever blade with reach adjustment and a 2-piece handlebar clamp for easy installation without removing grips.

• Built-In Bell Option: Designed with a clean, space-saving lever body featuring an integrated bell push button to keep your handlebars clutter-free.

Why the 5mm Pad & 2.3mm Rotor Setup Matters

Standard bicycle brakes are built for lighter human-powered bikes. Modern e-bikes—with heavy mid-drive motors, cargo loads, and sustained high speeds—generate extreme heat and wear down components much faster. The HD-E395 addresses this directly with its heavy-duty setup:

• Massive Thermal Mass (50% Stiffer Rotors): 2.3mm thick rotors provide 50% higher torsional rigidity and significantly greater surface mass. This allows the rotor to absorb and dissipate heat far better during long, steep downhills, practically eliminating brake fade, rotor warping, and speed wobble.

• Extended Service Intervals: Heavy e-bikes quickly burn through thin organic pads. The extra material on the 5mm pads extends friction life substantially, meaning fewer pad replacements, lower maintenance costs, and less shop downtime for daily commuters and fleet bikes.

• Consistent Lever Feel: Thicker rotors resist flexing under high hydraulic clamp pressure, resulting in a firm, direct lever bite rather than a squishy, inconsistent feel under heavy loads.

Technical Specifications

• Model: HD-E395
• System Type: Open Hydraulic Disc Brake (Pre-bled Mineral Oil)
• Caliper: 2-Piston Forged Aluminum
• Pad Thickness: 5mm (E11.11 Organic Compound)
• Rotor Thickness: 2.3mm Only, 180mm rotor recommended
• Lever: 3-finger cast aluminum with reach adjust
• Intended Use: High-speed E-City, E-Trekking, Cargo E-Bikes