Share this product
Add your review
Review Tern GSD S10 (900 Wh) Electric Bike

Tern GSD S10 (900 Wh) Electric Bike

($4,799.00 Incl. tax)
The GSD is designed to carry two kids, a week’s worth of groceries, or 180 kg of cargo, but it’s only 180 cm long—the same length as a standard bike. With Tern’s best-in-class folding technology, it packs down small.
1- 2 weeks

Photo Courtesy of Bicycling Magazine,


Highlights Of This Electric Bike

Uses the Bosch eBike System

Enormously Useful. Surprisingly Small.

The GSD is designed to carry two kids, a week’s worth of groceries, or 180 kg of cargo, but it’s only 180 cm long—the same length as a standard bike. With Tern’s best-in-class folding technology, it packs down small enough to fit in a VW Touran or an urban apartment. Plus, it adjusts to fit riders from 4'9''– 6'4'' — so mom, dad and the kids can all share it.

Carries the Family

With room for up to two Thule Yepp Maxi child seats, plus grocery space to spare, the GSD lets you ditch the minivan. The low step-thru frame makes getting on and off much safer, and with an extra low center of gravity, the GSD is stable and steady.

Carry More

The GSD boasts cargo-bike capacity, despite its city-bike footprint—up to 400 lbs. including rider. Build it up with Cargo Hold Panniers and the Shortbed and Transporteur racks, to carry industrial strength Eurocrates, a week of groceries or a family picnic plus the kitchen sink.

Boosted Components

We use burly and dependable, cutting edge mountain bike technology to make the GSD superlatively strong. Magura 4 piston disc brakes, custom 62 mm Schwalbe Super Moto-X tires, Boost thru-axle hubs, and custom 36 mm wide double-joined rims, provide the rock-solid foundation for a bike spec’d to carry 180 kg.


Deciphering This Electric Bike

Sometimes the language used to describe electric bikes can be confusing. Let us walk you through it:
Tern: This is the brand of the electric bike.
GSD: This is the line of bikes. It stands for "Get Stuff Done."
S10: This is the model of bike. It is the less-equipped model of this line.
900wh: This refers to the capacity of the battery used in this bike, in watt-hours. The battery is a Bosch dual-battery system (900 Wh) for a range of up to 220 km.


View Full Electric Bike Specifications

General Info

Wheel Size
20" wheels

1 x 10

27.06 kg (59.66 lb) w/ 1 battery

Flatpack Dimensions
173 x 40 x 83 cm (71" x 16" x 33”)

Packing Time
5 sec

Step-Thru Height
50 cm

Total Length
181 cm

Suggested Rider Height
150 - 195 cm (4'11" - 6'5")

Max Gross Weight
200 kg (400 lb)


Tern GSD, 7005-Al, patented MultiTruss design

Tern GSD, 1.5" Taper, Boost Thru-axle, 110 mm, 7005-AL


Tern Physis 3D (G2), 3D forged, 5 patented technologies

Tern Andros (G2), adjustable, forged construction, patented technology

Tern Flux Pro Taper, 1.5", angular contact bearings, Physis integrated

Tern Sweep, 27 degrees, 6061-Al, Tern Andros adapted

Ergon, for swept bar

Tern GSD, with rear handle

Tern Telescope, 34.9 mm, 2014-Al


Front & Rear Brake
Magura MT5, 4-piston hydraulic disc, 180 mm rotor

Brake Levers
Magura, hydraulic


Front & Rear Wheel
Tern Atlas, heavy duty cargo wheel

Front Hub
Tern Atlas, Boost thru-axle

Rear Hub
Tern Atlas, Boost thru-axle, Syntace X-12 standard, ebike reinforced design

Spokes And Nipples
Stainless steel, 13G

Tern Atlas, ultra wide 36 mm, dual reinforced joint

Tern x Schwalbe Super Moto-X, 62-406, Green Guard puncture protection, Reflex


Shimano Deore, 1 x 10 spd

Rear Derailleur
Shimano Deore Shadow+

Tern GSD custom, forged 6061-AL DH crankarm

Shimano 11-36T, 10 spd

Bottom Bracket
Motor integrated

Urban with non-slip surface, sealed bearings

10 spd, DHT for eBike, GST corrosion resistant coating

Shifter Cable & Housing
Jagwire LEX-SL, slick treatment, alloy ferrules


Bosch Performance, Max speed 20 mph (US)

Bosch Dual Battery system, 400wh/500wh/900wh

Single Battery: 400 Wh: 50-110 km (31-68 mi); 500 Wh: 60-140 km (37-87 mi)

Bosch Purion, 4 mode selectable, walk assist

Bells & Wheels


SKS Chainblade

Heavy-duty double stand, 80 kg capacity

Luggage Socket
Barrel Mount

Front Light
Tern Valo, integrated, 41 lux/150 lumens

Rear Light
Herrmans H-Trace, for eBike

SplashGuard, stainless hardware

Frame integrated, heavy duty design

Pannier Bags
SideKick Cargo Hold x 2, 62 L (optional)

Passenger Foot Support
SideKick retractable foot pegs (optional)

Frame Lock Mount
For ABUS Frame Lock Shield 5650L on front fork (lock not included)

** Also available with single 500 Wh battery at a reduced price


Contact us for more information or to arrange a test ride.