Other authorized specialist brands Addmotor Grandtan M-340 Electric Trike overview
The Other authorized specialist brands Addmotor Grandtan M-340 Electric Trike is set up for stability, senior-friendly riding and errands. Power comes from a rear hub motor rated at 750 W nominal / 1,200 W peak with 80 Nm of torque, paired with a 48V 20Ah battery pack holding roughly 960 watt-hours of energy. On mixed terrain that supports up to 40 miles (pedal assist); hills, rider weight, tire pressure, temperature and assist level all change the real figure.
Motor and battery
Cadence sensing decides how much help you get, so assistance builds smoothly instead of surging. Top assisted speed is 20 mph (Class 2), and the bike is supplied as Class 2 (throttle and pedal assist). A full charge takes about 6–8 hours from a standard 110V outlet. Charge indoors, at room temperature, on the charger supplied with the bike.
Comfort and handling
The three-wheel step-through frame runs 20″ x 4.0″ fat tire tires with front suspension fork, and a 7-speed drivetrain for pedalling above assist speed. Claimed bike weight is 92 lb, with a 415 lb total maximum load including rider and cargo.
Braking and safety
Mechanical disc with parking brake brakes handle stopping in traffic and on descents. Check brake pads, tire pressure and battery mounting before every ride, and always ride with a helmet. Fat and wide tires improve traction on loose surfaces, but no e-bike is safe on ice.
Who this bike is for
Riders who want stability, senior-friendly riding and errands without stepping up to a motorcycle. If you are unsure whether this frame fits you, contact us with your height and inseam before ordering and we will confirm.
Why you’ll love it
- One battery covers most everyday trips
- Mechanical disc with parking brake braking with predictable feel
- Three-wheel step-through frame that suits everyday use
- Serviceable, widely available parts
Specifications
| Motor | Rear hub, 750 W nominal / 1,200 W peak, 80 Nm |
|---|---|
| Battery | 48V 20Ah (960Wh), charge time 6–8 hours |
| Range | Up to 40 miles (pedal assist) |
| Top assisted speed | 20 mph (Class 2) |
| E-bike class | Class 2 (throttle and pedal assist) |
| Brakes | Mechanical disc with parking brake |
| Suspension | Front suspension fork |
| Drivetrain | 7-speed |
| Tires | 20″ x 4.0″ fat tire |
| Frame | Three-wheel step-through, aluminum alloy |
| Bike weight | 92 lb |
| Maximum payload | 415 lb total |
| Condition | New |
Specifications follow the manufacturer’s published information for this model. Contact us before ordering if a specific figure is critical to your decision and we will confirm it with the supplier.
What’s in the box
Bike, battery, charger, tool kit, quick-start guide and manufacturer documentation. Accessory items shown in lifestyle photography are not included unless listed.
Assembly
Ships mostly assembled. Expect to fit the front wheel, handlebar, pedals and seat, then check brakes and torque before the first ride. See our assembly and maintenance guide, or ask us for an assembly quote.
Warranty, shipping and returns
Covered by the manufacturer warranty that applies to this model — see our warranty policy. Shipping is handled per our shipping policy, and returns per our return and refund policy.
Questions before buying?
Call +1 (213) 657-0405 or email Info@rayelectricbikes.com. We will help with sizing, class rules in your state, range for your commute and accessory fit.
Frequently asked questions
What range will I really get? Plan on the lower end of the published figure in hills, cold weather or with heavy loads.
Can I ride this on bike paths? It depends on your state and local rules — see our e-bike laws overview.
Do you help with sizing? Yes. Send us your height and inseam and we will recommend a frame.
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