£4,100

Bosch powered fully folding ebike, 10-speed Shimano Deore, ideal for owners of motorhomes, caravans & boats, Bosch Performance 65Nm motor, easy fold mechanism

Not in stock, but we should be able source this size and colour for you. Please phone 01905 611774.

Tern Vektron S10 Folder

The Tern Vektron S10 is a 20″ wheel, fully folding electric bike, powered by Bosch. Designed for a multitude of uses, the Vektron S10 is equally at home in the urban jungle or on the boat, caravan or motorhome.

Powered by Bosch’s super strong Performance 65Nm crank drive motor, the Vektron S10 delivers a smooth yet strong pull on even the most demanding terrain and steepest of climbs. The large 400Wh battery ensures more than ample range for all journeys. This little beast will provide endless hours of enjoyment. It’s so portable, and simple to fold.

It’s lightweight aluminium frame ensures strength as well as maneuverability. A simple yet reliable mechanism known as the ‘OCL+™ Frame Joint’ allows the Vektron S10 to become half its size in a matter of seconds. This unique piece of engineering is so strong that it exceeds ISO 4210 and EN 15194 testing requirements. The Vektron S10 uses ‘N-Fold™ Technology’ allowing a complete and fast fold in three easy steps. Retaining straps ensure the bike stays folded. Nothing could be simpler. Furthermore, with the handlebar folded to the outside of the package, the Tern can also roll when folded for easy transport.

Smart folding mechanism

Part of the Vektron S10’s genetic makeup features an ‘Andros™ Stem’. This is Tern’s own unique adjustable stem that allows the rider to rotate and set the handlebars as required without the need for tools. It takes seconds to adjust, and means the bike’s geometry is a perfect fit for all. A telescopic seat-post ensures further flexibility. There’s more clever design too with a special saddle that allows the user to carry the bike comfortably via the shoulder. The underside of which has an integrated shoulder pad that also acts as a grip when rolling while folded.

It has its own side-stand as well as an ‘A’ support underneath the motor on which to rest the bike in its folded state.

Gearing is both smooth and accurate thanks to a nice Shimano Deore 10-speed derailleur. ensuring excellent hill-climbing. Braking is highly effective thanks to the Shimano Deore hydraulic disc brakes front and rear, and ensure the Vektron S10 responds when asked. Keeping the rider fully comforted are the highly absorbing Schwalbe Big Apples. No need for suspension forks on this little gem! These huge balloon tyres ensure every bump and hollow are effortless. Ergon GP10 grips enhance rider comfort and support the hands precisely.

Lighting is provided via a powerful 41 lux, 150 lumen Valo Direct lamp sited inside the handlebar stem. This ensures it’s safe from knocks, bumps, and theft as well as being protected while folding. The Bosch Purion LCD mounted to the left of the bars provide clear and succinct rider information. Bosch drives have four levels of power assistance that are easily changed.

Motor	Bosch Performance 65Nm
Battery	400Wh
Gears	Shimano Deore Shadow+ 10-speed derailleur
Forks	Tern Tarsus, 6061-Al, hydroformed
Brakes	Magura MT4, hydraulic disc
Wheel Size	20"
Tyres	Schwalbe Big Apple, Performance Line, 55-406, puncture protection, Reflex
Folded Size	41cm x 86cm x 68cm
Colour	Silver

All sizing information is a guide only. If you have any questions about bike sizing, our expert team is here to help. Call us on 01905 611774.

How do I measure my height?

With your shoes off, stand upright against a wall, with your shoulders back and legs together. Use a pencil to make a small mark on the wall above your head (make sure you hold the pencil parallel to the floor). Then measure from the floor to your mark, in centimetres or feet and inches.

How do I measure my inside leg length?

With your shoes off, stand upright with your back against a wall. Place a book/ruler between your legs, level with your crotch. Then measure from the floor to the top of the book/ruler, in centimetres or feet and inches (it’s easier if a friend helps).

Q & A

Do all brands of ebike use the same unit of measurement?

No. Most brands show sizing in centimetres, however some use a S/M/L system, and others use inches. The table above includes all of these variations to help you find the right size.

Which size should I go for if I'm in between those listed?

If your measurements suggest that you have a choice of two different sizes, then in the end it’s a personal choice. Here are some rules of thumb to consider: Touring/Trekking ebikes - choose the smaller size. It is possible to make a smaller frame bigger (for example, by raising the saddle or fitting a longer the stem), whereas if the frame itself is too big for you, it’s likely to be less comfortable and won't feel right. eMTBs - choose the larger size. You’ll find an eMTB with a slightly larger frame easier to handle than one that feels cramped. You can always fit a shorter stem if necessary to reduce the reach to the handlebars.

How are ebike frame sizes measured?

An electric bike’s frame size is calculated by measuring the distance from the top of the seat tube (where the seat post inserts), to the centre of the front chainring. Sizing Guide