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Electric Eco-Delta SX

  • $2,298.00

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The Eco-Delta SX is the most affordable Sun delta trike. It has a fully adjustable mesh-back saddle with a padded bottom that keeps you cool and comfortable. There are spare bottle mounts on the handlebar and seat frame.

The Eco-Delta has traditional handlebars, higher seating position and lower cranks better suited for casual riding. It also has a powerful 1000w watts of power, 26 mph top speeds and plenty of torque to help power your ride. Available with multiple battery options, optional rear fenders and basket.

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


  • Most Affordable Recumbent
  • Easy Mounting Upright Seat
  • Traditional High Handlebars
  • Simple 1x7 Gearing
  • Ideal for Longer Rides
  • 4 Water Bottle Mounts


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The Eco-Delta SX is the most affordable Sun Delta Trike and it's full of features. It has a fully adjustable mesh-back saddle with a padded bottom that keeps you cool and comfortable. There are spare bottle mounts on the handlebar and seat frame.

Comfortable Upright Handlebars

The Electric Eco-Delta puts the handlebars within comfortable reach – the adjustable handlebars are high and close to the rider, providing a more familiar and secure ride than recumbents with under-seat steering.

Rear Disc Brake

The Electric Eco-Delta features a rear disc brake and front v-brake – this economical combination gives safe, long-lasting brake performance.

Easy-To-Read Segment Display
The Electric Eco-Delta 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.
Simple 1x7 Gearing
Even if it's been a while since you rode a bike, you'll appreciate the Eco-Delta's simple 1x7 gearing. This system means every gear you need is available at the flick of the wrist. No need to worry about double shifting or gear combinations!
500-1000 Watt Geared Hub Motor
The 500-1000w E-BikeKit front geared hub motor features impressive 84Nm torque and a USA handbuilt wheel with single-butted 12-13 gauge spokes for durability.
The easy to use twist throttle allows you to engage the motor whenever you need it. Use the throttle to get a boost when starting from a stop or to help get up to cruising speed. The Eco-Delta also features a pedal-assist sensor (PAS) for operation.

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.


  • A: Handlebar Reach

  • B: Handlebar Rise

  • C: Standover Height

  • D: Seat Length to Pedal

  • E: Seat Height to Ground

  • Recommended Rider Height



$250 Flat-Rate Shipping.
Contiguous USA Only.

Orders shipping to PA will be subject to sales tax.

Ships fully assembled from our warehouse in Bucks County, PA. The trike is enclosed in a heavy cardboard box fastened to a shipping pallet, delivered by motor freight truck with liftgate service. 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. Tracking is less precise than UPS or FedEx. The freight company will contact you before the final delivery is made in order to arrange the drop-off with you.

Delivery Time:
    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 afterwards.

Shipping Size: 80" x 40" x 44" / 190lbs

Please Note: This trike ships with the E-BikeKit user manual for details on the electric-drive system and also with the Sun official manual for the trike itself. The video section above contains assembly instructions and tips for getting started and using your new electric bike. The specifications sections should also provide most of the information you'll want to know. If you have any questions or suggestions of additional information you would like to see posted, please let us know. Official manuals are in development, and once completed, they will be offered to customers that request them.

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


  • Top Speed

    Approx. 26 mph at 48v (With Programmable Limit)
  • Range

    10-44 Miles (Depends on Battery)
  • Motor

    E-BikeKit Front Geared 500w-1000w, 84Nm, 320rpm (48v)
  • Motor Weight

    9.4 lbs
  • Battery

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

    300 lbs (With Rider and Cargo)
  • Charge Time

    3-5 Hours
  • Charger

    48v 2A – 48v 4A
  • Drive Mode

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

    Blue/Gray and Red/Black
  • Intended Use

    Neighborhood, Cruising, Paved Trail, and Urban
  • Frame Material

    High Tensile Tig Welded Steel
  • Fork Details

    High Tensile Steel, Rigid
  • Suspension

  • Rims

    Alloy, 36-Hole, Double-Wall
  • Spokes

    (F) 12-13 Gauge, Single-Butted, Stainless Steel / (R) 14 Gauge, Stainless Steel
  • Tires

    Kenda Kwest, 20” x 1.5” at 40 to 65 psi
  • Seatpost

    Rans Style Seat Slide
  • Saddle

    Steel Frame 1pc / SunLite Padded/Mesh Back w/ Bottle Braze-on
  • Stem

    Alloy, Recumbent 2 pc w/ 240mm Diameter
  • Handlebar

    Chromoly Steel, Long Back Style w/ 2 Bottle Braze-on and 22.2mm Diameter
  • Brake Levers

    Includes E-Brake Shutoff and Parking Lock, One Lever for the Front Wheel and One Lever for the Rear Wheel
  • Brakes

    (F) Promax Alloy Linear Pull / (R) Promax DSK-400 Mechanical Disc Brake w/ 160mm Rotor
  • Shifter

    SunRace Twist Shifter
  • Grips

    EBT Grips – EVA Rubber
  • Display

    E-BikeKit 2017 LCD Display
  • Front Derailleur

  • Rear Derailleur

  • Cranks

    Singe Alloy, 170mm Length w/ 38t Chainring / Chain Guard
  • Pedals

    Wellgo LU-207 Plastic Platform
  • Gearing

    Shimano 7-speed (1x7) / 14-28t Cassette
  • Lights

  • Fenders

    Optional: Black High Impact / Stainless Steel Stays / Front and Rear Set
  • Basket

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

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

    42.5”-63” (Depends on Rider X-Seam Set-Up)
  • Overall Length

    69”-88” (Depends on Rider X-Seam Set-Up)
  • Max. Width

  • Ground Clearance

    3” (Rear Derailleur)
  • Turning Radius

    10'3-1/2" (Approx.)
  • Overall Weight

    53.7 –64.3 lbs (Depends on Battery Type)


Model Weight Range Mount Style Cost
48v 9Ah Shrink Wrapped 5.8lbs 10-22 Battery Bag with Velcro Straps Base Cost
48v 10Ah Aluminum 7.7lbs 12-26 Sliding Plate with Lock +$286
48v 20Ah Shrink Wrapped 14lbs 20-44 Battery Bag with Velcro Straps +$366
  • Nominal Voltage

  • Nominal Capacity

    Depends on Battery Choice: 9-20Ah
  • Battery Energy

    Depends on Battery Choice: 421-936Wh
  • Dimensions

    Depends on Battery Choice
  • Total Weight

    Depends on Battery Choice
  • Cell Assembly

    18650-3.6v-13S 4P / 5P / 10P
  • Life Cycles

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

    20A / 22.5A / 50A
  • BMS Protection Current

    30A / 30A / 60A
  • Discharge Cut-Off Voltage

  • Max. Charge Voltage

  • Inner Resistance

    180mΩ / 180mΩ / 220mΩ
  • Charge Time

    < = 3 Hours
  • 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

    Depends on Battery Choice: Aluminum or Vinyl w/ Canvas Bag
  • Battery Weight

    5.8-14 lbs (Depends on Battery Choice)
  • Assembled Pack Certificates

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

    1 Year
  • Manufacturer

    Electric Bike Technologies


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

Conversion Points:

Financing Options NOW Available!
Customer Reviews