We deliver to all lower 48 states of the contiguous U.S. Delivery takes anywhere between 1 to 10 business days, depending on where you live and your selected shipping option.
Photo 1 of 14
Tern
HSD S8i
- Year
- 2021
- Size
- Unique: ideal for riders between 4ft 11in and 6ft 5in
Only one available
Why we love it
The Tern HSD S8i is the ultimate e-bike for everyday commuting and hauling. It's compact and easy to use, making it perfect for city living. It's also powerful and durable. So whether you're running errands, picking up groceries, or taking your kids to school, the Tern HSD S8i has you covered.
Top features
- Top-of-the-range engines from top manufacturers
- Pedal motor provides smooth, proportional electric assistance
- Hydraulic disc brakes for effortless, powerful and progressive brakes for complete safety
Specifications
General
Brand: Tern
Model: HSD S8i
Usage: City
Color: Black
Year: 2021
Mileage: 1,091 mi
Weight: 57 lb
Frame type: Open
Sizing
Manufacturer's size: Unique (ideal for people between 4ft 11in and 6ft 5in)
Seat tube length: 44 cm
Equipment & Accessories
Rack position: Rear
Electrical
Battery
Condition: Original
Battery capacity: 400 Wh
Number of cycles of battery charge: 30
Battery location: Seat post
Battery removable: Yes
UL certified: Yes. Available for purchase anywhere in the US.
Engine
Brand: Bosch
Model: Active Line Plus Sport
Engine location: Mid-drive
Engine torque: 50 Nm
Product Reference: BDU380
Engine power: 250 W
Assistance type: Pedal
Max speed: 20 mph
e-Bike class: Class 1
Display
Display model: Purion
Mechanical
Drivetrain & Braking
Shifting: Internal gear hub
Transmission: Belt
Derailleur model: Shimano Nexus inter 8
Number of speeds: 8
Brakes: Disk | Hydraulic
Wheels & Tires
Wheels size: 20"
Tires: Schwalbe Big Ben (55-406 - 20 x 2.15)
Frame & Suspensions
Frame material: Aluminum
History and Inspection Report
All our bikes go through a 50-point inspection and are refurbished by professional mechanics. Learn more about the checklist
Tern HSD S8i (2021)
Refurbished in our Brooklyn Upcenter in October 2026
- Frame, drivetrain, braking system, wheels, tires and suspensions inspected and tested
- Battery, motor and display diagnosed and in healthy condition
- Software up-to-date
- Test ride, deep cleaning and final quality control check
Mechanic's note
This bike is in good condition. There are some scratches on the frame and some components may have external damage.
Ownership history
This Tern HSD S8i was sold to us directly from an individual in September 2026.
Additional notes
With this type of Nexus drivetrain, it is recommended that you stop pedalling briefly to change gear.
Warranty and Protection
Included with your bike
Optional coverage available at checkout
Sell your current bike
Firm, hassle-free offer
Free pick-up or drop-off
Fast, secure payment
Trusted by 30,000+ riders
Check my bike’s valueYou may also like
See what our customers think of us
Frequently asked questions
Yes you can contact us via our chat (from 9am to 6pm ET), via email at helpdesk@upway.shop or you can schedule a call with one of our Upway experts using this link.
A large percentage of our stock is actually brand new. In many cases, we get these bikes still-in-box from both manufacturers and bike shops as overstock. While you will typically not be eligible for manufacturer warranty for these bikes, this is how we are able to offer them at such a steep discount. You can find all our new bikes here.
Yes! A professional bike mechanic has repaired, inspected, and certified your electric bike, meaning we are happy to offer a 1-year warranty that covers mechanical and electrical defects. If you experience any problems within the next 12 months receipt of your bike, please contact us via email: helpdesk@upway.shop.
If you would like, you can purchase a more robust warranty through our partner, Extend. You can read more about Extend's warranty here.
No. Your sales taxes will be calculated at check-out and vary per state. At the same time, you may not see any sales taxes applied to your purchase. If you have any questions, don't hesitate to reach out to helpdesk@upway.shop or via our chat.
Yes! The pictures you are seeing on the product page are the pictures of the exact bike you will receive if you purchase it. At Upway we truly believe in transparency and trust, so we decided to take the time to have at least 7 pictures of each bike we have in stock so that you know exactly what you are buying. If you have any questions or if you want more pictures, don't hesitate to reach out at helpdesk@upway.shop or via our chat.
Yes! You will receive the key(s), charger(s), all the accessories you see on the pictures if there are some (rack, basket, bag, etc except the bike stand in the photo) and the user guide if we have it.
Upway lets you choose to receive your bike either in 15-minute assembly or 5-minute assembly options. You can also select additional preferences for delivery speed and appointment choice. Shipping starts at $99 but varies by model (some bikes aren’t eligible for the 15-minute assembly). You can find more info on this page.
Please be assured that Upway has your back in case of any shipping damage. We generally recommend that customers do not refuse shipments. Upway will then credit you back a fair amount for any aesthetic, permanent damages such as scratches, and cover any repairs for functional damage.