Electric Eco-Delta SX
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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.
Highlights
- Most Affordable Recumbent
- Easy Mounting Higher Seat
- Comfortable Upright Seat
- Traditional High Handlebars
- Simple 1x7 Gearing
- Ideal for Longer Rides
- 4 Water Bottle Mounts

Videos
Reviews
Features
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.

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.

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




How to Measure Your X-Seam
At Electric Trike 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.
Sizing

-
A: Handlebar Reach
10"-16" -
B: Handlebar Rise
0"-6" -
C: Standover Height
20" -
D: Seat Length to Pedal
32"-43" -
E: Seat Height to Ground
23" -
Recommended Rider Height
5'-6'4"

Shipping
$250 Flat-Rate Shipping
Contiguous USA Only.
Orders shipping to PA will be subject to sales tax. There is no sales tax presently to any other state.
SHIPS 100% FULLY ASSEMBLED from our warehouse in Bucks County, PA
The bike is enclosed in a heavy cardboard box, protected by a wood frame 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.
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: 73" x 40" x 51" / 190lbs
Please Note: This custom electric 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 trike. 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.
If you have any questions, please contact us at
Tel: +1 800.375.0224 or
Email: support@electrictrike.com
Specs
-
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
None -
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
N/A -
Rear Derailleur
SunRace -
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
None -
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
31” -
Ground Clearance
3” (Rear Derailleur) -
Turning Radius
10'3-1/2" (Approx.) -
Overall Weight
53.7 –64.3 lbs (Depends on Battery Type)
Battery
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
48v -
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
39v
-
Max. Charge Voltage
54.6v -
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
DIY
If you already have a Sun Seeker Eco-Delta and want to convert it to electric, we offer conversion kits at E-BikeKit.com, including kits specifically for the Eco-Delta:
Conversion Points:
- Use the "Sun Seeker Eco-Delta" E-Bike Conversion kit at E-BikeKit
- Must use two torque arms
- 36-volt is recommended, to keep the maximum speed to 20 mph