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Electric EZ-3 USX HD

  • $3,232.00

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The electric EZ-3 USX HD provides stability and comfort of a recumbent trike while offering more thrills. The HD stands for heavy-duty, with 110 psi tires, 48 spoke wheels and a 400 lbs load capacity. The heavy-duty, direct-drive motor is designed for heavier applications with 1000 watts of power.

Ideal for larger riders, the EZ-3 USX HD has a powerful braking system, mid-frame suspension, cambered rear wheels, and under-the-seat steering. Available with multiple battery options, optional rear fenders, and a basket.

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$250 Flat-Rate Shipping. Contiguous USA Only.
  • Ships Fully Assembled
  • 1yr Tire-to-Tire Warranty
  • World-Class Support


  • Low Center of Gravity
  • Stable Cambered Rear Wheels
  • Heavy-Duty 48-Spoke Rear Wheels
  • Double-Wall Rims
  • High-Pressure Tires
  • Rated for Riders up to 400 lbs
  • Extra Padded Mesh Seat
  • Mid-Frame Suspension
  • 20" x 1.9" Tires
  • Quick-Release Adjustable Seat
  • Quick-Release Backrest
  • Dual Rear Disc and Front V-brake
EZ-3 USX HD-Electric Trike


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The EZ-3 USX HD provides all the stability and control available in recumbent trike technology while offering a little more thrill. The HD stands for heavy-duty, with 110 psi tires, 48-spoke wheels with double-wall rims. The direct-drive motor is also heavy-duty and designed for heavier loads with 1,000 watts of peak power.

With the mid-frame coil suspension, the electric EZ-3 USX HD smooths out the roughest roads.
Advanced Mid-Frame Suspension

The mid-frame coil-over suspension on the EZ-3 HD helps smooth the roughest roads and keeps you riding when other trikes would give up.

The electric sun seeker ez3 USX HD has heavy-duty wheels that are built for a 400 lb rider with cargo.
Heavy-Duty Construction

With 48-spoke double-wall alloy rims, high-pressure tires, dual rear disc brakes, and front v-brake, the EZ-3 HD is built for a 400 lb capacity with a low center of gravity.

The large easy-to-read LCD is attached on the electric Sun seeker EZ3 USX hd.
Easy-To-Read Segment Display
The EZ-3 HD features an easy-to-read backlit display with large text mounted on the handlebars. This advanced segment LCD includes a battery meter, speed, and trip distance readout, and programmable top speed limit.
The cambered rear wheels on the electric EZ-3 USX hd Sun Seeker trike, adds stability to your ride.
Cambered for Stability
The EZ-3 HD's Frame Geometry Features cambered rear wheels – this adds extra stability for easy and safe cornering by tilting each rear wheel inward towards the center of the frame by 2 degrees.
The sun seeker electric EZ3 USX HD can move up to 300 lbs rider and cargo.
Heavy-Duty Direct-Drive Motor
The 500-1000w E-BikeKit motor is capable of pulling over 300 lbs and is laced into a USA handbuilt wheel with single-butted 12-13 gauge spokes for durability. This motor is seriously heavy-duty.
A quick twist of the thumb throttle will propell you when you need that extra power.
Thumb Throttle
The EZ-3 HD features an easy-to-use thumb throttle, so you can get power when you need it. The integrated pedal-assist sensor can also give you a boost to augment your pedaling.

How to Measure Your X-Seam

At Electric Bike Store, we like to use the X-Seam measurement to fit riders on recumbent trikes and inseam to fit riders on upright trikes (like the Sun Traditional).

We use this measurement to adjust your trike to fit you out of the box, but it's simple to adjust your trike later to suit your preferences. This is just a rough measurement to make things easier for you.

Alternatively, if you like reading and diagrams...

To measure your X-seam, you'll need a tape measure, a sturdy board (like a piece of plywood or an ironing board), and an assistant to help you. If you currently ride a recumbent bike, you can use that to take the measurement instead of the board.


Overall measurements of the electric EZ-3 USX HD sun seeker recumbent trike.
  • A: Handlebar Reach

  • B: Standover Height

  • C: Seat Length to Pedal

  • D: Seat Height to Ground

  • Recommended Rider Height

The length and width of the electric EZ-3 USX HD sun seeker trike.


$250 Flat-Rate Shipping.
The Contiguous USA Only.

Sales Tax
Sales tax will be applied by state where applicable.

SHIPS 100% FULLY ASSEMBLED from Our Warehouse in Bucks County, PA
The tricycle is enclosed in a heavy cardboard box and fastened to a custom-built shipping pallet. Shipping is by freight truck with liftgate service included.

We use a variety of freight carriers based on your shipping destination. When the trike ships you will receive an email from us with tracking information. The freight company will contact you before the final delivery is made in order to arrange the drop-off with you.

The electric tricycles we offer are high quality tricycles assembled by professionals with years of experience, and we stand behind each electric tricycle we build and ship. If, for any reason, after purchasing your electric trike, you are not 100% satisfied, simply contact customer service to discuss the return.

IMPORTANT: Buyers may return any undamaged and unused products (including fully assembled electric tricycles) within 30 days of delivery for a refund minus a 25% restocking fee (based on the condition of the returned item and at the sole discretion of EBT). ACTUAL ORIGINAL SHIPPING CHARGES (not the flat-rate $250), AND RETURN SHIPPING CHARGES (back to our facility) ARE THE SOLE RESPONSIBILITY OF THE BUYER. These return shipping costs can be significant. It is also imperative that you retain the shipping pallet and box should you decide to return a complete tricycle. If these packing items are discarded, the return will become that much more complicated and expensive.

For more information on Returns, Shipping Charges and refunds please visit our Terms & Conditions.

Transit Times
Approximate transit times start once the parcel leaves our Croydon, PA warehouse.
    East Coast: 2-4 Business Days
    Midwest: 3-5 Business Days
    West Coast: 5-7 Business Days

With liftgate service, the truck can only lower the pallet to the ground, they cannot deliver it inside your house. You will need to open the box and dispose of the pallet afterward.

Shipping Size
80" x 40" x 44" and 190 lbs

Please note this custom electric trike is currently shipping without a user manual. The specifications sections should also provide most of the information you'll want to know. If you have any questions, suggestions, or additional information that you would like to see posted, please let us know.

If you have any questions, please contact us at 
Tel: +1 800.215.1976  or  


  • Top Speed

    18 Mph (w/ Programmable Limit)
  • Range

    10-44 Miles (Depends on the Battery Choice)
  • Motor

    E-BikeKit Front Heavy-Duty Direct-Drive 500w-720w, 31Nm, 259rpm (48v)
  • Motor Weight

    9.4 lbs
  • Battery

    48v 9Ah, 48v 10Ah, or 48v 20Ah
  • Max. Payload

    400 lbs (Including Rider and Cargo)
  • Charge Time

    4.5-5 Hours (From 0-100%)
  • Charger

    48v 2A – 48v 4A
  • Color

    Ultra Silver
  • Intended Use

    Neighborhood, Cruising, Paved Trails and Urban
  • Drive Mode

    Throttle-on-Demand and Pedal-Assist, 5-Level Speed Control, Programmable Speed and Current Limit, and Assist Level
  • Frame Material

    Custom Steel, TIG Welded
  • Fork Details

    High-Tensile Steel, KSPEED 261 Mid-Frame Bumper Suspension
  • Rims

    (F & R) Alloy 48-hole Double-Wall
  • Spokes

    (F) 12 Gauge, Stainless Steel / (R) 14 Gauge, Stainless Steel
  • Tires

    Maxxis Hookworm, 20” x 1.95” at 85-110 psi
  • Seatpost

    Rans Style Seat Slide
  • Saddle

    Sunlite Heavy-Duty Padded Seat w/ Mesh Back and Adjustable Backrest Angle
  • Brakes

    (F) ProMax V-brake / (R) WinZip Mechanical Disc Brakes w/ 160mm Rotor
  • Brake Lever

    Includes E-brake Shutoff and Parking Lock for Front-Wheel and One Dual-Pull Lever for both Rear Wheels
  • Stem

  • Handlebars

    Steel, Reverse Mounted Underneath Seat
  • Grips

    EBT Grips – EVA Rubber
  • Shifter

    SRAM Grip Shift 3.0
  • Display

    E-BikeKit 2017 LCD
  • Front Derailleur

  • Rear Derailleur

    Sram X3
  • Chain Guard

  • Gearing

    Shimano 21-Speed (3x7) / 13-28t Cassette
  • Cranks

    Alloy 170mm w/ 30/42/52t Chainrings
  • Pedals

    Wellgo, LU-812, Alloy Cage Style w/ 9/16” Thread
  • Lights

  • Fenders

    Optional: Front and Rear Set, Black High Impact Plastic w/ a Glossy Finish
  • Basket

    Optional: Steel, Black Vinyl Coated: 16.25" Long x 13.25" Wide x 8.5" Deep
  • X-Seam Range

    29”-49” (Smaller Sizes May Require Modification)
  • Wheelbase

  • Overall Length

  • Max. Width

  • Ground Clearance

    3” (From the Bottom of the Rear Derailleur to the Ground)
  • Turning Radius

    10'3-1/2" approx.
  • Overall Weight

    61-71 lbs (Depends on the Battery Choice)


Model Weight Range Mount Style Cost
48v 9Ah 5.8 lbs 10-22 Miles Battery Bag with Velcro Straps Base Cost
48v 10Ah 9.7 lbs 12-26 Miles Sliding Plate with Lock +$286
48v 20Ah 14 lbs 20-44 Miles Battery Bag with Velcro Straps +$366
  • Nominal Voltage

  • Nominal Capacity

    9-20Ah (Depends on the Battery Choice)
  • Battery Energy

    490-1092Wh (Depends on the Battery Choice)
  • Dimensions

    Depends on the Battery Choice
  • Total Weight

    Depends on the Battery Choice
  • Cell Assembly

  • Life Cycles

    > = 80% Dod = 500 Cycles
  • Max. Continuous Discharge

  • BMS Protection Current

  • Discharge Cut-Off Voltage

  • Max. Charge Voltage

  • Inner Resistance

    < = 50mΩ
  • Charge Time

    < = 3.3 Hours (From 0-100%)
  • Operation Temperature Range

    Charge: 0°C – 45°C / Discharge: -20°C – 60°C
  • Storage Temperature

    0°C – 40°C (Extended Storage: 15°C – 25°C)
  • Battery Box Material

    Aluminum or Vinyl w/ Canvas Bag (Depends on the Battery Choice)
  • Assembled Pack Certificates

    UL; UN38.3; MSDS; RoHS; SGS
  • Limited Warranty

    1 Year
  • Manufacturer

    Electric Bike Technologies, Inc.


If you already have a Sun Seeker EZ-3 HD and want to convert it to electric, we offer conversion kits at, including kits specifically for the EZ-3 HD:

Conversion Points:

Financing Options NOW Available!
Customer Reviews