Kit - EZ-3 HD

The EZ-3 HD Conversion System transforms the Sun EZ-3 HD delta trike into a powerful electric trike using a heavy-duty 500W direct-drive front hub motor and an optional 48V 15Ah lithium-ion battery pack.

• Built specifically for the Sun EZ-3 HD delta trike
• Top speed approximately 18–20 mph at 48V
• Estimated 15–45 mile range depending on rider, terrain, and usage
• Supports pedal-assist and throttle-on-demand

Direct-drive motors are strong, durable, and built for longevity. With no internal gears or clutch, the motor provides smooth acceleration, excellent load-bearing capability, and dependable long-term performance — making it the ideal choice for heavier riders and cargo applications.

Who’s it for? Riders who want maximum durability, reliability, and steady torque delivery on a heavy-duty delta platform. Ideal for total system loads up to 600 lb (trike + rider + cargo).

EZ-3 HD-Specific Extras:

• Locking parking-brake levers
• Two torque arms (required for safe retention; tighten axle nuts to 35 ft-lb)
• Battery mounting hardware as shown in photos

Core Conversion Kit Components:

• USA hand-built 20″ front wheel with direct-drive, disc-brake compatible 500W hub motor
• 48V compatible 22A 12FET controller
• Programmable LCD dashboard display
• 12-magnet split PAS disc
• Left-side PAS sensor
• Thumb throttle
• Left & right e-brake levers with parking lock
• Main motor cable
• 3-to-1 accessory cable
• Battery wire harness (included only when no battery is ordered)
• Battery & charger (only when ordered)
• Zip ties, C-washers, and torque arms

Motor Specifications

• Brand: EBikeKit LLC
• Type: Direct-drive (gearless, brushless), disc-brake compatible
• Power: 500W nominal / >1000W peak @ 48V
• Max Torque: ~46 Nm @ 48V
• Max RPM: ~259 @ 48V
• Cable: 8″ axle exit, 3-phase / 5 hall sensors
• Connector: Round 8-pin (10.4 mm)
• Motor Weight: ~12.8 lb (5.8 kg)
• Front Dropout Requirement: 100 mm
• Total Load Limit: Up to ~600 lb (rider + trike + cargo)

This system may be ordered with or without the 48V 15Ah lithium-ion battery pack.

• Range: 15–45 miles depending on load, terrain, and riding style
• Charge Time: ~5 hours using the included 3A charger
• Nominal Voltage: 48V
• Capacity: 15Ah
• Energy: ~720Wh
• Total Battery Weight: ~10.1 lb (4.6 kg)
• Cell Structure: 18650, 13S4P
• Life Cycles: ~500–800 cycles
• Max Continuous Discharge: 16A
• BMS Protection: 20A
• Discharge Cut-Off Voltage: ~37.5V
• Max Charge Voltage: 54.6V
• Internal Resistance: ≤230 mΩ
• Operating Temp (Charge): 0°C–45°C
• Operating Temp (Discharge): −20°C–60°C
• Storage Temp: 0°C–40°C
• Certifications: UN38.3, MSDS, UL-listed cells

This section gives dealers a reliable reference for positioning, presenting, and comparing the EZ-3 HD conversion system.

Comparable Complete Trike:

• View the fully built EZ-3 USX HD electric trike using this system:
  EZ-3 USX HD – ElectricTrike.com
• Use the complete trike listing to benchmark consumer expectation for appearance, performance, and retail value.
• Fully assembled trikes delivered to customers typically include approximately $300 freight, which should be factored into any comparison conversations.

Dealer Support Commitment:

• Real-time support via text, phone, and email
• Direct access to wheel builders and system technicians
• Guidance on torque-arm placement and correct delta-trike cable routing
• Support for battery mounting and heavy-duty load configurations
• Fast responses for shop-floor troubleshooting and install questions

Our mission: Help every dealer deliver clean, safe, professional EZ-3 HD installations backed by expert support.

This conversion system is designed specifically for the Sun EZ-3 HD delta trike.

• Fits standard 100 mm front dropout spacing
• Engineered for heavy-duty delta trike loads
• Supports total loads up to ~600 lb

Some frame variations or older models may require minor adjustments during installation.

The EZ-3 HD kit installs using common bike tools and includes all required hardware for most stock EZ-3 HD frames.

• Motor wheel installs into the 100 mm front fork
• Controller, LCD, and wiring use plug-matched connectors
• PAS sensor mounts on the crank (left-side standard)
• Parking-lock brake levers replace stock brake levers
• Both torque arms MUST be installed due to high load rating
• Battery must be securely mounted using the included hardware

Careful torque-arm installation, cable routing, and secure mounting of all components are critical for long-term reliability and safety.