Tern Vektron Gen 4

Prices from: £3,500

From: £77.29 per month
(For 24 months with Cycle to Work)

The fourth-generation Tern Vektron folds in 10 seconds and rides like a full-size e-bike. Bosch smart system, 27kg rack, and a belt-drive option.

The Vektron has always been the folding e-bike for people who refuse to compromise, and the fourth generation sharpens the formula. A redesigned frame, Bosch’s smart system with 75Nm of torque, and – for the first time – a belt-drive option with hub gears. It still folds in 10 seconds, still carries 27kg on its rack, and still rides like a proper bike.

We have both models in the shop as demo bikes, so you can try them back to back before deciding.

Who is this bike for?

The Vektron is perfect if you:

• Mix cycling with public transport – Folds in 10 seconds for trains and buses, then rolls along on its rack like a trolley
• Store your bike indoors – Fits in cupboards, hallways and under desks, and the battery charges from a normal socket
• Want proper e-bike performance – A full-power Bosch Performance Line motor, not a lightweight compromise
• Carry more than just yourself – 27kg rear rack capacity with Tern’s quick-fit bags and baskets
• Share with different riders – Fits riders from 4’10“ to 6’5“ (147–195cm) with tool-free stem and seatpost adjustment

Everything at a glance

• Folds in 10 seconds, rolls when folded
• Bosch Performance Line motor (75Nm) with the smart system and eBike Flow app
• Removable Bosch PowerPack 400Wh battery
• Bosch Purion 200 display
• Magura MT4 hydraulic disc brakes
• 27kg Atlas V rear rack
• 190-lumen front light and integrated rear light
• Fits riders 4’10“–6’5“ (147–195cm)
• Fits on a train luggage rack, in a car boot, or under a desk
• 10-year frame warranty with Tern Care registration

Choose your configuration

• Vektron P10 – Shimano Deore 10-speed with a wide gear range. The lighter of the two at 22.2kg, and the wider spread of gears is the one we’d point most people towards around here – it climbs better when the road tilts up
• Vektron P5i – Shimano Nexus 5-speed hub gear with a Gates carbon belt. No oil, no derailleur to knock while folding, and barely any maintenance – ideal if the bike lives in a hallway or comes on the train every day

The honest trade-off: the P5i’s hub and belt cost £300 more, add about 1.4kg, and give a narrower gear range than the P10’s derailleur. If your rides are flat and frequent, the P5i’s cleanliness wins. If you’re tackling proper hills, take the P10.

Accessory options

• Luggage Truss – The front mounting point that Tern’s bags and baskets click into
• Hold ’Em Basket – 12-litre front basket with a weatherproof cinch top
• Kanga Rack – Front rack that straps around parcels of any shape
• Go-To Bag – 15-litre messenger bag with a padded laptop compartment
• HQ Bag – Slim office bag for a 13in laptop and tablet
• Market Basket – 24-litre rear basket that comes shopping with you
• Kontti Basket – Light, tough 18-litre rear basket
• Dry Goods Bag – Fully waterproof rack bag for all-weather commuting
• RidePocket – Handlepost pocket for phone, wallet and keys

What’s new in Gen 4

• Bosch smart system with the Purion 200 display and eBike Flow app connectivity
• More torque – 75Nm, up from the previous generation
• First belt-drive Vektron (P5i), paired with hub gears
• Redesigned frame with Tern’s OCL+ folding joint
• Atlas V rack with an integrated mounting system for bags, baskets and child seats

The folder that rides like a bike

Most folding bikes make compromises – the Vektron doesn’t. It has the motor, battery, and components you’d expect from a full-size e-bike, packaged into something that fits in a train luggage rack. At 22.2kg it’s no featherweight, but you rarely need to carry it: fold it and it rolls along on its rack wheels. If you’ve dismissed folders as toys, this one demands reconsideration.

Book a free test ride today

Find out more about ordering a bike from us and getting it delivered.

Select configuration:Vektron P10 – £3,500 (built to order)Vektron P5i – £3,800 (built to order)

Bosch Performance Line (smart system), 400Wh, Purion 200, Shimano Deore 10-speed, chain drive

Price: £3,500

Built to order – delivery expected February 2027

Pre-order now