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2022 Tern

Vektron D8

A 20″ aluminum frame folding e-bike with mid-range components and shimano hydraulic disc brakes.
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Manufacturer Price

$2,799
Weight49.6 lbs  
FrameAluminum
SuspensionRigid
ForkSteel
Wheels20″ Aluminum
Drivetrain1 × 8
GroupsetClaris
MotorBafang 250W 80Nm mid-drive
BatteryBafang 400Wh
BrakesShimano Hydraulic Disc
Where to Buy
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Reviews
Electric Bike Report
Tern Vektron S10 Review 2023

Jan 2023 · Sam Gross

It’s not super often that I ride a folding bike and am able to forget it’s a folding bike. Usually there’s something — a creak, a little wobble in the handlepost or maybe even some flex in the jointed frame — that serves as a constant reminder that the bike I’m riding is technically cut

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ebiketips
Tern Vektron S10

Oct 2020

Verdict: A do-it-all electric folder that is now even more capable

Read Review

Electric Bike Review
Tern Vektron Q9 Review

Nov 2019

Price: $3199.00 | Model Year: 2019 | A premium folding electric bike with Bosch drive system and leading warranty, sturdy and quiet with plenty of adjustability (seat post height and stem angle), smart accessories help you carry gear and stay dry without noise

Observations
  • A premium folding electric bike with Bosch drive system and leading warranty, sturdy and quiet with plenty of adjustability (seat post height and stem angle), smart accessories help you carry gear and stay dry without noise

  • The folding joints are thick, sturdy, and don't have sharp edges, both latches have two-step locks to keep them secure and they fold flat to stay out of the way, a magnet and rubber strap keep the bike from coming unfolded

  • Excellent Schwalbe Balloon tires with puncture protection, reflective sidewalls and a larger diameter for improved comfort, you also get bright integrated lights and a delay feature for safety when parking

  • The bike costs a bit more, only comes in one size, the Purion display is not removable, and the Bosch system although wonderful, is the entry system with the Active Line motor and PowerPack 400

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Specs
Build
Frame

Tern Vektron, hydroformed aluminum, OCL+ joint, 3 patented technologies

ColorsSatin Gunmetal; White

Fork

Integrated, hi-tensile steel

Bottom Bracket

Motor integrated

Headset

Tern Flux, cartridge bearings, Physis integrated

Stem

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

Handlebar

Flat bar, 6061-Al, Tern Andros adapted

Saddle

Tern Porter, patented GripPad design

Seatpost

SuperOversize, 6061-Al, micro-adjust clamp

TypeRigid

Pedals

Folding, alloy body

Groupset
Rear Derailleur

Shimano Claris

Crank

Vektron custom, forged AL6061 crankarm

Shifters

Shimano, 1 x 8 spd, trigger

Cassette

Shimano 11-32T, 8 spd

Chain

8 spd, DHT for eBike, GST corrosion resistant coating

Chain Guide

n/a

Brakes

Front: Shimano, hydraulic disc, Rear: Shimano, hydraulic disc

TypeShimano Hydraulic Disc

Brake Levers

Shimano, hydraulic disc

Wheels
Rims

Kinetix Comp, for disc

Front Hub

Shimano disc

Rear Hub

Shimano disc

Tires

Schwalbe Big Apple, Active Line, 50-406, puncture protection, Reflex

Electric Components
Motor

Bafang M400 Drive System, 36 V/250 W, max speed 25 kph (EU); max speed 20 mph (US), max torque 80 Nm

Battery

Bafang M400 Drive System Battery, 400 Wh, Panasonic cells

Display

Bafang M400 Drive System Display, 5 mode selectable, walk assist

Charger

Bafang Charger

Accessories
Lights

Front: Tern Valo Direct, integrated, 41 lux/150 lumens, Rear: Herrmans H-Trace / H-Trace Mini, for eBike

Fenders

SplashGuard, stainless hardware

Racks

Yes

Bell

Aluminum

Rider Notes
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First added March 4

Last updated August 20

Not listed for 1,322 days