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2025 Tern

Vektron P5i

A 20″ aluminum frame folding e-bike with modest components and magura mt4 hydraulic disc brakes.
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Manufacturer Price

$4,099
Weight47.2 lbs  
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels20″ Aluminum
DrivetrainBelt Drive, Internally Geared Hub
GroupsetGates CDX, Nexus
MotorBosch 600W 63Nm mid-drive
BatteryBosch 400Wh
BrakesMagura MT4 Hydraulic Disc
View on ternbicycles.comLearn about Tern
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Reviews
ebiketips
Tern Vektron P5i | electric bike reviews, buying advice and news - ebiketips

May 2026 · Dave Atkinson

The Tern Vektron P5i is a high quality folding e-bike that can carry a lot of stuff, and folds simply and reliably into a small enough package that it’ll easily fit on a train luggage rack or into the boot of a car. It rides well, and fits a good range of rider sizes from ... Read more

Highs
  • High quality build

  • Quiet, efficient motor and drivetrain

  • Easy and fun to ride

  • Simple fold

Lows
  • Fairly heavy

  • Standard-spec 400Wh battery is a bit small

Read Review

Electric Bike Report
Tern Vektron P5i Review | Premium, Purpose-Driven & Portable

Feb 2026 · John S. Bozick

This high-end folding e-bike offers comfort, responsive pedal assist, and a compact, user-friendly design. In my experience, many folding e-bikes are directed at consumers who may be new to riding or uncertain of how often they plan to use their purchase. As such, I’ve noticed that many manufacturers of folding e-bikes make highly affordable, entry-level

Highs
  • The Vektron P5i rides just like a “regular” bike, thanks to its smooth, responsive, and capable Bosch Performance Line mid-drive motor.

  • Tern designed the bike for awesome portability, with a frame that folds small, can stand upright, and can roll easily when folded.

  • The P5i model is quiet, clean, and remarkably low-maintenance, with a Gates Carbon belt and Shimano Nexus internal gear hub.

  • It has quick steering and nimble handling due to its relatively low weight and 20” wheels.

  • The single frame size fits riders from 4’10” to 6’5”, thanks to its dual-telescoping seatpost and adjustable Andros stem.

  • It’s advanced, yet easy to use. The Bosch system feels precise without adding the complexity of too many settings or an app.

  • The Vektron is equipped from front to back with premium components, ensuring reliability, great performance, and serviceability.

  • Tern offers up to a 10-year warranty on its frames, forks, and handleposts—be sure to sign up for Tern Care to maximize your coverage!

  • It’s compatible with a wide range of accessories, including cargo baskets and luggage, storage and transport bags, etc.

Lows
  • We liked the ability to quickly switch off the headlight, but we hoped to see functioning brake lights on such an urban-friendly e-bike.

  • Vektron models in the US aren’t compatible with Bosch’s highly useful Flow app. We’d love to see that functionality in the future.

Read Review

Specs
Build
Frame

Tern Vektron, 6061-AL, hydroformed aluminum, OCL+ joint, 3 patented technologies

ColorUrban Verdant

Fork

Tern Tarsus, 6061-Al, hydroformed

Headset

Tern Flux by FSA, cartridge bearings, Physis integrated

Stem

Tern Andros, adjustable, forged construction, patented technology

Handlebar

Tern Sweep, 6061-AL, Tern Andros adapted

Saddle

Tern Upright by Velo

Seatpost

Tern Telescope, 34.9/30.9 mm

TypeRigid

Pedals

MKS EZY

Groupset
Crank

Tern custom, Gates CDX CNC machined beltring

Shifters

Shimano Nexus, 5 spd

Cassette

Gates CDX, precision CNC machined cog

Chain

Gates Carbon Drive CDC belt

Chain Guide

Tern Custom, full chain cover

Brakes

Front: Magura MT4, hydraulic disc, Rear: Magura MT4, hydraulic disc

TypeMagura MT4 Hydraulic Disc

Brake Levers

Magura, hydraulic disc

Wheels
Rims

Kinetix Comp, for disc

Front Hub

Disc, aluminum

Rear Hub

Shimano Nexus 5

Tires

Schwalbe Big Apple, Performance Line, 55-406, puncture protection, Reflex

Electric Components
Motor

Bosch BES2 Performance, max speed 20 mph

Battery

Bosch 400Wh PowerPack

Display

Bosch Intuvia

Charger

100-120V, 4A

Accessories
Lights

Front: Tern Valo Direct, 190 lumens, Rear: Herrmans

Fenders

SplashGuard, stainless hardware

Racks

Yes

Lock

ABUS, keyed-alike with Bosch battery

Rider Notes
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First added September 27

Last updated March 22

Not listed for 13 days