Kit - Baja Trike

This Baja-specific E-BikeKit conversion system is designed to convert the Sun Baja fat-tire delta trike into a powerful, smooth, and responsive electric trike.

The system includes a USA hand-built 24″ front fat-tire motor wheel, integrated SINET™ controller, 3.5″ color SINET™ LCD with USB charging port, 48V 15Ah lithium-ion battery, 3A charger, integrated-controller battery cradle, Baja battery mounting plate and hardware, Topeak Bar Extender, thumb throttle, locking e-brake levers, matched wiring, torque arms, and Baja-specific installation components.

• Configuration developed specifically for the Sun Baja trike
• USA hand-built 24″ front fat-tire motor wheel
• Integrated SINET™ controller housed in the battery cradle
• 48V 15Ah battery and 3A charger included
• Baja battery mounting plate and mounting hardware included
• Topeak Bar Extender included for LCD mounting
• Choice of cadence pedal assist or bottom bracket torque sensing
• Throttle-on-demand included with either pedal-assist option
• Estimated range of approximately 15–45 miles depending on conditions
• Recommended for total loads up to approximately 300 lb

Choose your pedal-assist system:

• Cadence Sensor: Activates motor assistance when crank rotation is detected.
• Bottom Bracket Torque Sensor: Measures rider effort and provides a smoother, more natural, proportional level of motor assistance.

Important Torque-Sensor Package Note: The Baja uses a single-piece crank configuration. When the Bottom Bracket Torque Sensor option is selected, the system automatically includes the additional parts required to convert the trike to a compatible two-piece crank configuration:

• Bottom bracket adapter set
• Compatible crankset
• Matching pedal set

These components are included automatically with the torque-sensor option and are shown in the product images.

The pedal-assist type is the only selection required. The motor wheel, integrated controller, battery, charger, battery cradle, battery mounting plate, Topeak Bar Extender, LCD, throttle, wiring, locking e-brake levers, and model-specific installation hardware are included with every Baja system.

Reverse Function: This updated geared hub motor system does not include reverse functionality.

Who’s it for? Riders and dealers looking for a complete, model-specific Baja conversion system with matched SINET™ components, a professionally built fat-tire motor wheel, and direct technical support.

This system includes the battery, charger, integrated controller, 24″ front fat-tire motor wheel, Baja battery mounting plate, Topeak Bar Extender, and matched SINET™ components. The only selection required is the pedal-assist type.

Baja Conversion System Components:

• USA hand-built 24″ front fat-tire motor wheel with rim strip
• Integrated SINET™ controller housed in the battery cradle
• 3.5″ color SINET™ LCD with USB charging port
• Topeak Bar Extender for LCD mounting
• Thumb throttle
• Left and right locking e-brake levers with motor cutoff
• Main SINET™ wiring harness
• Short Baja-specific motor cable
• Pedal-assist extension cable when required
• Torque arms
• C-washers, axle hardware, installation hardware, and zip ties
• 48V 15Ah lithium-ion battery
• 3A battery charger
• Integrated-controller battery cradle
• Baja battery mounting plate and mounting hardware

Pedal-Assist Selection:

• Cadence Sensor: Split-disc cadence sensor and pickup sensor
• Bottom Bracket Torque Sensor: Torque-sensing bottom bracket with the required extension cable

Additional Parts Included With the Bottom Bracket Torque Sensor Option:

• Bottom bracket adapter set for converting the original single-piece crank configuration
• Compatible two-piece crankset
• Matching pedal set

These parts are automatically included when the Bottom Bracket Torque Sensor option is selected. Refer to the product images to view the complete torque-sensor conversion package.

The motor wheel includes a rim strip. Tire and tube are not included.

The SINET™ system combines the controller, display, pedal-assist input, throttle, brake cutoffs, motor connection, and battery interface into one matched electrical platform.

• Integrated controller housed within the battery cradle
• 3.5″ color SINET™ LCD with clear system and ride information
• USB charging port built into the LCD
• Matched waterproof electrical connectors
• Cadence and torque-sensing pedal-assist compatibility
• Throttle-on-demand operation
• Motor cutoff through both locking e-brake levers
• Battery interface integrated directly into the controller-equipped cradle

Watch the video below for an overview of the SINET™ LCD, including initial setup, programming, and commonly used system settings.

Watch the SINET™ LCD Programming Guide on YouTube

Download the SINET™ LCD quick-start guide for display operation, setup, programming, and system settings.

Download the SINET™ LCD Quick-Start Guide (PDF)

Motor Wheel

• Wheel Position: Front
• Wheel Size: 24″ fat-tire wheel
• Construction: USA hand-built motor wheel
• Motor Type: Brushless internally geared front hub motor
• Power: 500W nominal with higher peak output at 48V
• Maximum Torque: Approximately 84Nm at 48V
• Maximum Motor Speed: Approximately 320 RPM at 48V
• Approximate Top Speed: Approximately 20 mph, conditions dependent
• Brake Compatibility: Disc-brake compatible motor
• Front Dropout Requirement: Approximately 135 mm
• Motor Connector: Round 8-pin motor connector
• Motor Weight: Approximately 9.4 lb
• Rim Strip: Included
• Tire and Tube: Not included
• Reverse Function: Not included

Electrical System

• System Voltage: 48V
• Controller: Integrated SINET™ controller
• Controller Location: Battery cradle
• Display: 3.5″ color SINET™ LCD
• USB Charging Port: Included
• LCD Mounting: Topeak Bar Extender included
• Throttle: Thumb throttle
• Brake Cutoffs: Left and right locking e-brake levers
• Torque Arms: Included
• Total Recommended Load: Approximately 300 lb, including trike, rider, and cargo

Pedal Assist

• Cadence Option: Split-disc cadence sensor
• Torque Option: Bottom bracket torque sensor with extension cable, bottom bracket adapter set, compatible crankset, and matching pedals

Every Baja conversion system includes the 48V 15Ah lithium-ion battery, integrated-controller battery cradle, Baja battery mounting plate, mounting hardware, and 3A charger.

• Nominal Voltage: 48V
• Capacity: 15Ah
• Energy: Approximately 720Wh
• Estimated Range: Approximately 15–45 miles
• Charger: 3A charger included
• Approximate Charge Time: Approximately 5 hours
• Maximum Charge Voltage: 54.6V
• Cell Structure: 18650, 13S4P
• Estimated Cycle Life: Approximately 500–800 cycles
• Battery Weight: Approximately 10.1 lb
• Certifications: UN38.3, MSDS, and UL-listed cells

Actual range varies based on rider weight, terrain, speed, temperature, tire pressure, pedal input, assist level, throttle use, and total system load.

This conversion system is designed specifically for the Sun Baja fat-tire delta trike.

• Designed for a 24″ front fat-tire motor wheel
• Designed for approximately 135 mm front dropout spacing
• Includes torque arms for secure axle retention
• Includes locking parking-brake levers with motor cutoff
• Includes the Baja battery mounting plate and mounting hardware
• Includes a Topeak Bar Extender for LCD mounting
• Recommended for total loads up to approximately 300 lb, including trike, rider, and cargo

Cadence Sensor Option: Uses the supplied cadence sensor and pickup sensor.

Bottom Bracket Torque Sensor Option: Automatically includes the torque sensor, bottom bracket adapter set, compatible crankset, and matching pedals required to convert the Baja from its original single-piece crank configuration.

Trikes that have been modified or differ from the standard factory configuration may require additional parts or installation adjustments.

The Baja conversion system uses matched SINET™ components and connectors to simplify installation on a compatible stock Sun Baja.

• Install the 24″ front fat-tire motor wheel into the front dropouts
• Install the supplied torque arms
• Install the Baja battery mounting plate
• Mount the integrated battery/controller cradle securely to the mounting plate
• Install and secure the included 48V 15Ah battery
• Install the Topeak Bar Extender and mount the SINET™ LCD
• Install the thumb throttle and locking e-brake levers
• Install the selected cadence sensor or torque-sensor package
• For the torque-sensor option, install the bottom bracket adapter set, compatible crankset, matching pedals, torque sensor, and extension cable
• Route and secure the SINET™ wiring harness, short motor cable, and sensor wiring
• Verify axle-nut torque, torque-arm placement, brake operation, steering clearance, and cable routing

Proper torque-arm installation, correct axle-nut torque, secure battery mounting, safe cable routing, and proper brake adjustment are essential for safe operation.

Professional bicycle-shop installation is recommended when the installer is not experienced with bicycle wheels, fat-tire fitment, brakes, electrical systems, torque arms, battery mounting, crank conversion, or bottom bracket service.

This section provides a reference point to help dealers position, present, install, and support the Baja conversion system confidently.

Dealer Support Commitment:

• Real-time installation support by phone, text, and email
• Direct access to system builders and wheel technicians
• Guidance on front-wheel fitment, torque-arm placement, and cable routing
• Support for Baja battery mounting plate installation
• Guidance on Topeak Bar Extender placement and LCD installation
• Support for cadence-sensor installation
• Support for the torque-sensor crank conversion, including the adapter set, crankset, pedals, sensor, and extension cable
• Fast assistance with shop-floor technical questions

Torque-Sensor Sales Note: The bottom bracket torque sensor option includes all additional crank-conversion parts automatically. The complete package is shown in the product images so dealers and customers can see exactly what is included.

Our mission: Ensure every dealer delivers a clean, professional, and reliable Baja conversion experience.