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Tern Vektron Q9


Tern’s compact folding electric bicycle, featuring Bosch drive, hydraulic disc brakes, high end componentry throughout and a smooth ride

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Ride it, Fold it, Go Further

The Vektron is a best-in-class electric bike that folds in 10 seconds to go on trains, in cars, and under desks. Shorten distances and flatten the hills on your commute, or put a couple of Vektrons in the trunk of your car on your next trip, so you can explore further.

Specifications Tern Vektron Q9

  • SPEEDS: 1 x 9
  • WEIGHT: 21.9 kg (48.3 lb)
  • GEAR INCHES: 33″ – 97″ (2.65 – 7.72 m)
  • FOLDING SIZE: 41 × 86 × 68 cm (16.1 × 33.9 × 26.8 in)
  • FOLDING TIME: 10 sec
  • FRAME SIZES: One size
  • DISTANCE: SEATPOST TO HANDLEBAR: 62 – 69 cm (24.4 – 27.2 in)
  • DISTANCE: SADDLE TO PEDAL: 67 – 110 cm (26.4 – 43.3 in)
  • SUGGESTED RIDER HEIGHT: 147 – 195 cm
  • MAX GROSS VEHICLE WEIGHT: 125 kg (275.6 lb)
  • MAX RIDER WEIGHT: 105 kg (231.5 lb)
  • FRAME: Tern Vektron, hydroformed 7005-AL, OCL+ joint, 3 patented technologies
  • FORK: Tern Tarsus, 6061-Al, hydroformed
  • HANDLEPOST: Tern Physis 3D, 3D forged, 5 patented technologies, 12°, 320 mm
  • STEM: Tern Andros, adjustable, forged construction, patented technology
  • HEADSET: Tern Flux, cartridge bearings, Physis integrated
  • HANDLEBAR: Flat bar, 6061-AL, Tern Andros adapted
  • GRIPS/BAR TAPE: Velo ergonomic, lock-on
  • SADDLE: Tern Porter, patented GripPad design
  • SEATPOST: Tern Telescope, 34.9/30.9 mm, 2014-AL
  • SEATPOST CLAMP: Tern Collar, 6061-AL, 2pc
  • FRONT BRAKE: Shimano, hydraulic disc
  • REAR BRAKE: Shimano, hydraulic disc
  • BRAKE LEVERS: Shimano, hydraulic disc
  • BRAKE CABLE & HOUSING: Shimano, hydraulic disc
  • FRONT HUB: Shimano disc
  • REAR HUB: Shimano disc
  • SPOKES AND NIPPLES: Stainless steel
  • RIMS: Kinetix Comp, for disc
  • TYRES: Schwalbe Big Apple, 55-406, puncture protection, Reflex
  • SHIFTER(S): Shimano Alivio, 1 x 9 spd, trigger
  • REAR DERAILLEUR: Shimano Alivio Shadow
  • CRANKSET: Vektron custom, forged 6061-AL crankarm
  • CASSETTE/FREEWHEEL: Shimano 11-32T, 9 spd
  • BOTTOM BRACKET: Motor integrated
  • CHAIN: 9 spd, DHT for eBike, GST corrosion resistant coating
  • SHIFTER CABLE & HOUSING: Jagwire LEX-SL, slick treatment, alloy ferrules
  • MOTOR: Bosch Active Line Plus, 270% Assist, 50 Nm Torque, max speed 25 kph (EU); max speed 20 mph (US)
  • BATTERY: Bosch PowerPack 400 Wh
  • DISPLAY: Bosch Purion, 4 mode selectable, walk assist
  • RANGE: 400 Wh: 55 -110 km (35-70 mi)
  • CHARGER: 220V, 4A (EU); 100-240V, 4A (US)
  • BELL: Aluminum
  • CHAINGUARD: SKS Chainblade
  • KICKSTAND: URSUS, rear mount
  • CLIP SYSTEM: Magnetix 3.0
  • FRONT LIGHT: Tern Valo Direct, 190 lumens
  • REAR LIGHT: Herrmans H-Trace, for eBike
  • FENDERS: SplashGuard, stainless hardware
  • RACK(S): Atlas V Rack™, integrated 8 point mounting; Max load weight: 27 kg (60 lb)



In the fall of 2010, we established a team of people who knew a thing or two about how to make bikes. We saw an opportunity to form a new company and walk the hard path of starting anew. Once committed, the first step was finding the right name and identity for our fledgling brand. There were about a dozen of us, brainstorming poolside, in the backyard of a Las Vegas rental after Interbike. Our Art Director swung us back to a particularly inspiring quote of Yvon Chouinard, the founder of Patagonia, from the film 180° South: “The hardest thing in the world is to simplify your life. It’s so easy to make it complex. The solution, may be, for a lot of the world’s problems is to turn around and take a forward step. You can’t just keep trying to make a flawed system work.” The idea of turning around and moving forward to face the challenges head-on was compelling. It meant retracing some steps, but we would know where to expect the bumps in the road. The discussion kept coming back to the word, turn and all of its connotations, but the word itself lacked personality. With the beer and creativity flowing, a tangential discussion led us to names of migratory animals. After all, we wanted to change how people get around, so that category seemed a fitting source of inspiration. Serendipitously, an internet search found the world-champion of migratory animals to be the Arctic Tern. Being a homophone was already a huge plus, but the nature of the bird is what helped solidify the choice. The Artic Tern has innate characteristics that embody the company we envision.

Additional information



Battery Range

Torque Sensor

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