Vektron S10

Vektron S10

The Accelerator

All around the world, the way we get from A to B is changing. With the world on the cusp of auto-mobility, ride sharing, and the mainstream arrival of electric vehicles, it’s an exciting moment for transportation. To help drive this force of change, we developed the world’s most compact Bosch-driven electric bike. The Tern Vektron takes everything great about folding bikes—multi-modal commuting, portability for travel and storage—and accelerates it. Got more questions? Read our FAQs.

  • Fits easily on buses and subways for electric multi-modal commuting
  • Resizes in seconds to fit riders 147 – 195 cm (4’10” – 6’5”) so a single bike can be shared by the family
  • Stores under a desk for convenient theft protection; no need to bring a heavy lock
  • Stash a pair in the trunk of a car for weekend getaways
  • German-engineered Bosch Active electric drivetrain—the industry leader in electric bike technology
  • T-Tuned™ geometry for a full-sized ride and comfort
  • Valo™ lighting system, with 150 lumens of power, for 24-hour visibility
  • Rear Cargo Rack™ works seamlessly with Yepp child seats—Maxi Easyfit or Junior Easyfit—for carrying kids
Photo may show optional accessories.
Black/Bright Blue
20" wheels

Aiming to design the perfect non-automobile commuter, Tern just may have done it…

Gear Hungry

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Product Reviews

Bike World News

It’s well thought out, and comes with just about everything you’d need, besides bags, for a solid commuting bike.

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Bike Here

This is hands down the best folding bike I have ridden.

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La Vektron S10 es el Nuevo buque insignia de Tern; el nivel de calidad de cada detalle es para estar orgulloso.

[The Vektron S10 is the new flagship of Tern; the quality of every single detail is to be proud of the result.]

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Excellent performance and a tidy fold make this a very usable electric bike for mixed commuting

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Electric Bike Action

Tern has hit this one out of the park […] one of the most impressive folding bikes we’ve ridden.

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Zeit Online

Das Vektron damit ideale Voraussetzungen für Berufspendler, deren Arbeitsweg neben einer Zugfahrt auch eine längere Radstrecke umfasst.

[The Vektron is an ideal choice for urban commuters, whose way to work includes a longer cycle route or train journey.]

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Das Vektron kann richtig was!

[The Vektron is a game changer!]

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Ultimately, the Vektron satisfies more than just the folding ebike scenario. It truly rides more like a full sized bicycle.

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Das Vektron ist fur jede Gelegenheit gerustet: 10-Gang-Schaltung, Scheibenbremsen, extra lange Schutzbleche mit Spritzspoilern, stabiler Touren-Trager, Spanngurte, Lichtanlage und ein variabler Vorbau, dessen Neigung schnell, leicht und individuell verstellt werden kann.

[The Vektron is equipped for every occasion: a 10-speed gearing, disc brakes, extra long fenders, a stable touring rack, tensioning straps, a lighting system and a variable stem which can be adjusted quickly and individually.]


Das ist die Stärke des Klapp-Pedelecs: Man kann es selbst in kleinen Autos transportieren, aussteigen und elektrisch unterstützt bis zum Ziel radeln – oder im Urlaub Ausflüge machen.

[The big advantage of a folding electric bike: you can take it with you in small cars, and cycle assisted to your destination. You can even bring it on vacation.]

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General Info
Black/Bright Blue
Wheel Size:
20" wheels
1 x 10

EU: 21.8 kg (48.1 lb); US: 22.2 kg (48.9 lb)

Folding Size:
41 x 86 x 65 cm (16.1" x 33.9" x 25.6")
Folding Time:
10 sec
Frame Sizes:
One size
Gear Inches:
30" - 93" (2.40 - 7.43 m)
Distance: Seatpost to Handlebar:
Min. 630 mm (24.8") Max: 690 mm (27.2")
Distance: Saddle to Pedal:
Min. 740 mm (29.1") Max: 1140 mm (44.9")
Suggested Rider Height:
147 - 195 cm (4'10" - 6'5")
Max Load Weight:
105 kg (230 lb)
Tern Vektron, hydroformed 7005-Al, 3 patented technologies
Tern Tarsus, 6061-Al, hydroformed
Tern Physis 3D, 3D forged, 5 patented technologies
Tern Andros, adjustable, forged construction, patented technology
Flux Pro, angular contact bearings, Physis integrated
Kinetix Comp, double-butted 6061-Al
Grips/Bar Tape:
Ergon GP10
Tern Porter+, patented GripPad design, PrimeGel padding
Tern Telescopic, 2014-Al, 2 pc.
Seatpost Clamp:
Oversize, 6061-Al, 2 pc
Front Brake:
Shimano Deore, hydraulic disc
Rear Brake:
Shimano Deore, hydraulic disc
Brake Levers:
Shimano Deore, hydraulic disc
Brake Cable & Housing:
Shimano, hydraulic
Front Hub:
Shimano disc
Rear Hub:
Shimano disc
Spokes and Nipples:
Stainless, double-butted
Kinetix Comp, for disc
Schwalbe Big Apple, 55-406, puncture protection, Reflex
Shimano Deore, 1 x 10 spd
Rear Derailleur:
Shimano Deore Shadow
FSA for Bosch
Shimano 11-34T, 10 spd
Bottom Bracket:
Motor integrated
10 spd, DHT for eBike, GST corrosion resistant coating
LiteForm QR, alloy body, QR right/standard left
Bosch Performance / Active, 36 V/250 W, max speed 25 kph (EU); max speed 20 mph (US)
Performance: 400 Wh, 500 Wh; Active: Bosch 300 Wh, 400 Wh
Bosch Purion, 4 mode selectable, walk assist
Performance Motor: 400 Wh: 45-100 km (28-62) / 500 Wh: 55-120 km (34-75); Active Motor: 300 Wh: 35-90 km (22-56 mi) / 400 Wh: 50-100 km (31-62 mi)
Bells & Whistles
Pitch, brass
SKS Chainblade
Rear mount, Pletscher design
Clip System:
Magnetix 2.0
Luggage Socket:
Front Light:
Tern Valo Direct, integrated, 41 lux/150 lumens
Rear Light:
Herrmans H-Trace, for eBike
SplashGuard, stainless hardware
Tern Cargo Rack
Pedal Holder