A city-ready utility e-bike made with families in mind, the Tern GSD S10 electric bike can carry 2 kids or up to 400 lbs. of cargo, despite being the same length as a standard e-bike.
- Folding technology compacts to a third of its full size in only 10 seconds so you can store it in your apartment, fit it in the elevator or stash it on a train
- Carries 2 kids (Thule Yepp Maxi child seats sold separately) and a week's worth of groceries—up to 400 lbs. of cargo, including rider
- Low step-through frame makes getting on and off easy
- When you're riding uphill with the kids on the back, rely on the Bosch motor and battery to deliver outstanding performance and power
- Adjusts to fit riders from 4 ft. 8 in. to 6 ft. 4 in., so the whole family can ride
- NOTE: Specs and images are subject to change based on component availability
Imported.
- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- An additional year of free adjustments on e-bikes
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All electric bicycles sold at REI include free adjustments for the defined period (one year after purchase date for non-members, or two years for REI Co-op Members)—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation, chain lubrication and e-bike firmware updates. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
UL2849 certified
| Best Use | Urban Cycling |
|---|---|
| E-Bike Classification | Class 1: pedal assist up to 20 mph |
| Motor | Bosch Performance Line, 250W |
| Motor Type | Mid-Drive |
| Motor Torque (Nm) | 63 Newton meters |
| Battery Type | Lithium Ion |
| Battery Capacity (Wh) | 400 watt hours |
| Pedal Assist Range | 31 - 68 miles |
| Frame | 7005 aluminum |
| Step-Through | No |
| Bike Suspension | No Suspension |
| Fork | 6061 aluminum |
| Crankset | Tern GSD Custom with forged 6061 aluminum DH crank arm |
| Bottom Bracket | Motor integrated |
| Shifters | Shimano Deore 1 x 10-speed |
| Rear Derailleur | Shimano Deore Shadow+ |
| Rear Cogs | Shimano 11-36T, 10-speed |
| Number of Gears | 10 |
| Brake Type | Hydraulic Disc Brake |
| Brakes | Magura MT-4, 4 piston hydraulic, 180mm rotor |
| Brake Levers | Magura, hydraulic |
| Rims | Tern Atlas, ultra wide 36mm, dual reinforced joint |
| Front Hub | Tern Atlas, Boost thru-axle |
| Rear Hub | Tern Atlas, Boost thru-axle, e-bike reinforced design |
| Wheel Size | 20 inches |
| Tires | Schwalbe Super Moto-X, 62-406, Green Guard puncture protection, Reflex |
| Tire Width | Unavailable |
| Handlebar Shape | Moustache Bar |
| Handlebar | Tern Sweep, 27°, 6061 aluminum, Tern Andros adapted |
| Stem | Tern Andros (G2), adjustable, forged construction, patented technology |
| Seat Post | Tern Telescope, 34.9mm, 2014 aluminum |
| Saddle | Tern GSD, with rear handle |
| Pedals | Urban with nonslip surface, sealed bearings |
| Headset | Tern Flux Pro Taper, 1.5 in., angular contact bearings, Physis integrated |
| Chain | 10-speed, DHT for e-bike, GST corrosion-resistant coating |
| Weight | (With 1 battery): 59 lbs. 10.5 oz. |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Unisex |
| One Size | |
|---|---|
| Height Range | 4'11"-6'5" |
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.