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Vektron S10 Folding Bosch eBike

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All around the world, the way we get from A to B is changing. With the world on the cusp of auto-mobility, ride sharing, and the mainstream arrival of electric vehicles, it’s an exciting moment for transportation. To help drive this force of change, we developed the world’s most compact Bosch-driven electric bike. The Tern Vektron takes everything great about folding bikes—multi-modal commuting, portability for travel and storage—and accelerates it.


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Description

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Tern Vektron S10 

    • New colors and updated styling
    • Upgraded to the Bosch Performance electric drivetrain for 300% more assistance and 65 Nm of torque
    • Updated frame with a reclining battery for a lower center of gravity and better ride
    • Frame passed strict European safety standards for pedal-assist e-bikes, having been certified as EN15194-compliant by EFBE Prüftechnik
    • Integrated Atlas Rack works seamlessly with Thule Yepp Maxi and Nexxt Maxi child seats—no adapters needed
    • Resizes in seconds to fit riders 147 – 195 cm (4’10” – 6’5”) so a single bike can be shared by the family
    • Fits easily on buses, subways and taxis for electric multi-modal commuting

Vektron S10 Video Review:

Note: this is a review of the Vektron S10 Gen 1.  There are a few differences with the new Vektron S10 and we hope to have a new video available soon.

 

Tern Vektron S10 Technology:

OCL+™ FRAME JOINT

ROBUST FOLDING TECHNOLOGY 

A heavy-duty update to our iconic OCL frame hinge, the OCL+ is built to exceed ISO 4210 and EN 15194 testing requirements. Leveraging the hinge design of the long-tail Tern Cargo Node, the OCL+ features a single-shaft design, advanced welding techniques, and robust gussets, so it stays stiff and strong during even the fastest commutes.

ANDROS™ STEM

ADJUST TO FIT

The Andros is our patented adjustable stem that lets you set your handlebars where you want—no tools, no fuss. In just seconds, you can set your riding position to long and low in a tough headwind, or upright and comfy for riding around town. You decide how you want to ride and the Andros makes your bike fit.

MAGURA MT4 HYDRAULIC DISC BRAKES

FULL STOP

Hydraulic disc brakes give you excellent stopping power, working effortlessly even in rain, snow, or mud. All it takes is the gentle pull of just two fingers. With mineral oil-based brake fluid that is gentler on the environment than most hydraulic brake fluids, and Magura's Easy Bleed Technology, your Vektron is ready for a safer ride.

BOSCH PERFORMANCE DRIVE UNIT

POWER TRIP

Electric bikes make it easy to ride from A to B. Where it gets interesting? When you’re inspired to visit the rest of the alphabet. The Bosch Performance Drive Unit offers a fine-tuned balance between torque and range. It takes the burden out of hauling kids and groceries. With up to 100 km of range with a standard 400 Wh battery, it’s the market leader in ebike technology.

BOSCH POWERPACK BATTERY

FEATHER-LIGHT POWERHOUSE

This impressive high-energy, high-power cell clips on and off your bike. The best-in-class design charges fast—from zero—in only 2.5 to 3.5 hours, and lets you ride longer and further between charges. You’ll be impressed by its long lifespan, light weight, and ease of charging. PowerPacks are available in 300/400/500 Wh variants, so you can forget about range anxiety.

BOSCH PURION CONTROL PANEL

COMPACT CONTROL CENTER

The on-board computer lets you switch between five different riding modes, and feeds you handy information like speed, battery level, and distance. It optimizes shifting actions and constantly updates you on the remaining range, just like a typical German car. Best of all, it’s now more compact and robust than ever.

ATLAS RACK

AN ULTRA-ROBUST RACK WITH GSDNA

With structural cues from the heavy-duty Tern GSD, the new Atlas Rack has been massively strengthened and increased in size, with a load capacity of 27 kg (59 lb). This reduces flex for more secure handling when the bike is loaded. Riding with your little one? Add a Thule Yepp Maxi or Nexxt Maxi child seat—no adapters needed. The Atlas Rack is also KLICKfix-compatible, and can hold panniers of different sizes—including the Bucketload Pannier, which was designed to fit every configuration of the Vektron.

Tern Vektron S10 Specifications:

GENERAL INFO

  • COLOR: 
  • WHEEL SIZE:   20" wheels
  • SPEEDS:   1 x 10
  • WEIGHT:   22.1 kg (48.6 lb)
  • FOLDING SIZE:   41 x 86 x 68 cm (16.1" x 33.9" x 26.8")
  • FOLDING TIME:   10 sec
  • FRAME SIZES:   One size
  • GEAR INCHES:   30" - 97" (2.36 - 7.72 m)
  • DISTANCE: SEATPOST TO HANDLEBAR: 
  • Min: 620 mm (24.4") Max: 690 mm (27.2")
  • DISTANCE: SADDLE TO PEDAL: 
  • Min: 670 mm (26.4") Max: 1100 mm (43.3")
  • SUGGESTED RIDER HEIGHT:   147 - 195 cm (4'10" - 6'5")
  • MAX LOAD WEIGHT:   105 kg (230 lb)
  • MAX GROSS VEHICLE WEIGHT:  125 kg (275 lb)
  • MAX RIDER WEIGHT:  105 kg (230 lb)
 
FRAME
  • FRAME:   Tern Vektron, hydroformed 7005-AL, OCL+ joint, 3 patented technologies
  • FORK:   Tern Tarsus, 6061-Al, hydroformed
 
COCKPIT
  • HANDLEPOST:   Tern Physis 3D, 3D forged, 5 patented technologies
  • STEM:   Tern Andros, adjustable, forged construction, patented technology
  • HEADSET:   Flux Pro, angular contact bearings, Physis integrated
  • HANDLEBAR:   Kinetix Comp, double-butted 6061-AL, Tern Andros adapted
  • GRIPS/BAR TAPE:   Ergon
  • SADDLE:   Tern Porter+, patented GripPad design, PrimeGel padding
  • SEATPOST:   Tern Telescope, 34.9/30.9 mm, 2014-AL
  • SEATPOST CLAMP:   Tern Collar, 6061-AL, 2pc
 
BRAKES
  • FRONT BRAKE:   Magura MT4, hydraulic disc
  • REAR BRAKE:   Magura MT4, hydraulic disc
  • BRAKE LEVERS:   Magura, hydraulic disc
  • BRAKE CABLE & HOUSING:   Magura, hydraulic disc
 
WHEELS
  • FRONT HUB:   Novatec, sealed cartridge bearing, disc
  • REAR HUB:   Novatec, sealed cartridge bearing, disc
  • SPOKES AND NIPPLES:   Stainless steel, double-butted
  • RIMS:   Kinetix Comp, for disc
  • TIRES:   Schwalbe Big Apple, Performance Line, 55-406, puncture protection, Reflex
 
TRANSMISSION
  • SHIFTER(S):   Shimano Deore, 1 x 10 spd
  • REAR DERAILLEUR:   Shimano Deore Shadow+
  • CRANKSET:   Vektron custom, forged 6061-AL crankarm
  • CASSETTE/FREEWHEEL:   Shimano 11-36T, 10 spd
  • BOTTOM BRACKET:   Motor integrated
  • CHAIN:   10 spd, DHT for eBike, GST corrosion resistant coating
  • PEDALS:   MKS EZY
  • SHIFTER CABLE & HOUSING:   Jagwire LEX-SL, slick treatment, alloy ferrules
 
E-SYSTEM
  • MOTOR:   Bosch Performance, 300% Assist, 65 Nm Torque, max speed 32 kph 
  • BATTERY:   Bosch PowerPack 400 Wh
  • DISPLAY:   Bosch Purion, 4 mode selectable, walk assist
  • RANGE:   400 Wh: 53 -106 km 
  • CHARGER:   100-240V, 4A
 
BELLS & WHISTLES
  • BELL:   Aluminum
  • CHAINGUARD:   SKS Chainblade
  • KICKSTAND:   URSUS, rear mount
  • CLIP SYSTEM:   Magnetix 3.0
  • LUGGAGE SOCKET:   Yes
  • FRONT LIGHT:   Tern Valo Direct, 190 lumens
  • REAR LIGHT:   Herrmans H-Trace, for eBike
  • FENDERS:   SKS, stainless hardware
  • RACK(S):   Atlas Rack, integrated 8 point mounting 

A closer look at the Vektron S10

OCL+™ Frame Joint

ROBUST FOLDING TECHNOLOGY 

A heavy-duty update to our iconic OCL frame hinge, the OCL+ is built to exceed ISO 4210 and EN 15194 testing requirements. Leveraging the hinge design of the long-tail Tern Cargo Node, the OCL+ features a single-shaft design, advanced welding techniques, and robust gussets, so it stays stiff and strong during even the fastest commutes.
 

Stronger by Design

Making the hinge taller and moving the pivoting surfaces outward from the center axis more than doubles overall strength and stiffness. It’s a difference you’ll feel from your very first ride.

Smooth Operation

The patented design puts four igus® bearings between the aluminum and stainless steel moving parts so the folding action is always smooth and friction-free.

Interlocking Joint

The front and rear joint surfaces lock together to eliminate torsional movement.
 

Easy to Use

Large rounded surfaces on the lever and joint bodies are easy on your hands and allow good leverage for easy operation.

Doubly Safe

Close the lever and the AutoLok™ automatically locks in place for extra, easy security.

Floating Point Technology

Patented technology allows the lever to fold flat and brace against the joint for protection in transit.

Serviceable

Good things are built to last and that’s why the OCL+ Joint is designed to be dealer serviceable. We keep every part in stock and if your bearings ever wear out, your dealer can replace them in a few minutes.

Precision-Machined

A machining tolerance of only 50 microns ensures a tight fit and eliminates looseness and rattling.

Stainless Steel Hardware

Cold-worked stainless delivers the durability and reliability needed for daily riding in all weather conditions. 
 

DoubleTruss™ Technology

STIFFER BY DESIGN

The rear half of Tern frames use a patented 3D structure we call DoubleTruss to build in extra stiffness. It helps resist torsional forces so our bikes flex less. That means increased stiffness and much better power transfer from the pedals to the rear wheel. The proof’s in the ride.
 

Quadric™ Dropouts

THE USER-CENTERED DROPOUT

Dropouts are often overlooked, but a good dropout goes a long way. Our Quadric dropout is built taller, so your disc brakes are protected inside the frame. The design makes the eyelets for mudguards, racks, and our clip system more user-friendly and accessible than ever before. We even included a mount for a sturdy rear kickstand.
 

Tarsus™ Fork

HYDROFORM MEETS FUNCTION

Utilizing a single hydroformed tube mated to a precision-machined steerer, the Tarsus delivers superior strength in a shape that matches the sophisticated lines of the Verge and Eclipse frames.
 

Hydroformed Tubing

The process of hydroforming aligns the grain structure and strengthens the aluminum material. It also minimizes welding in the most highly stressed area of the fork.

Internal Wire Routing

If you decide to equip your Tarsus with a dynamo hub, it’s ready for internal cable routing, keeping the profile of your bike clean.

Physis™ 3D Handlepost

THE NEW BENCHMARK

Five patented technologies and unique manufacturing technology add up to the strongest, stiffest folding handlepost available. The Physis uses a special manufacturing process called 3D forging, which forms the post from a single piece of aluminum, eliminating all welds.
 

No Flex

To eliminate flex, the Physis uses a massive joint knuckle and a post that gradually tapers from thick at the base to thin. Moreover, it has 150% more clamping height between the fork steerer and the handlepost than common designs.

Flux Technology

The base of the Physis is machined so it functions as the upper race of the headset. This patented direct integration contributes to the incredible stiffness of the design.

Interlocking Halves

Joint surfaces lock together to improve torsional stiffness. We've fine-tuned the shape to virtually eliminate squeaks.
 

Redundant Double Bolts

Two bolts clamp the Physis to the fork steerer for improved safety.

igus® Bearings

The patented design puts sliding bearings between the moving parts so the folding action is always smooth and friction-free.

Large, Smooth Lever

Large rounded surfaces are easy on your hands and provide good leverage for easy operation.

AutoLok Technology

Close the lever and it automatically locks in place, for extra, easy security—using an aluminum pin.

Floating Point Technology

Patented technology allows the lever to fold flat and brace against the joint for protection in transit.

SpringLock Technology

Patented SpringLock technology holds the adjustment rod firmly in place so the locking lever is always properly tensioned and can never vibrate loose. 

Serviceable

Good things are built to last and that’s why the Physis is designed to be fully dealer serviceable. We keep every part in stock and replacing the bearings can be done in minutes.

TriSeal Design

Three rubber seals keep weather out and the headset bearings functioning smoothly.

Precision-Machined

A machining tolerance of only 50 microns ensures a tight fit and eliminates looseness and rattling.
 

Andros™ Stem

ADJUST TO FIT

The Andros is our patented adjustable stem that lets you set your handlebars where you want—no tools, no fuss. In just seconds, you can set your riding position to long and low in a tough headwind, or upright and comfy for riding around town. You decide how you want to ride and the Andros makes your bike fit. 

Quick Release

Patented quick-release, tool-free design is easy to operate.

TwinStem Design

The Andros design uses two stems, spaced widely apart for excellent torsional stiffness.

Fits the Family

Accommodates riders of all sizes so one bike can be shared by multiple riders. 

Forged Construction

The patented design is FEA optimized and fully forged for maximum strength with minimum weight.

Built to Last

Stainless hardware and brass bushings for long-term durability. 
 

Porter+™ Saddle

ROLL WITH CONTROL

We reengineered the underside of the age-old bike saddle into a comfortable grip for transporting your folded bike. Up top, the dual-density construction and gel cushioning will keep you comfortable on the road, and the impeccably finished vacuum construction makes the saddle waterproof and easy to clean. Down below, the GripPad™ lets you roll your folded bike with comfortable confidence.
 
 
 
 
 

Telescopic Seatpost™

LONGER SEATPOST. SMALLER FOLD.

This seatpost is perfect for tall riders or anyone who likes a compact fold. It extends 90 mm longer than our stock seatpost, but thanks to its unique design, it’s 120 mm shorter when retracted. It features a dual-bolt head design for precise saddle adjustment, and an inner post diameter of 27.2 mm, so you can customize it with other posts.
 

Magura MT4 Hydraulic Disc Brakes

FULL STOP

Hydraulic disc brakes give you excellent stopping power, working effortlessly even in rain, snow, or mud. All it takes is the gentle pull of just two fingers. With mineral oil-based brake fluid that is gentler on the environment than most hydraulic brake fluids, and Magura's Easy Bleed Technology, your Vektron is ready for a safer ride.
 

Schwalbe Big Apple Tires

CUSH FOR YOUR TUSH

Big Apples are special because they’re fast rolling AND super comfy. Sounds hard to believe but you’ll just have to take them for a ride to become a believer. 

Faster Rolling

Wide tires roll better than skinny tires at the same tire pressure. Yes, it’s true! Big Apples are extra special because they use a light and flexible tread and sidewall for extra low rolling resistance.

Wide for Comfort

Super-wide Big Apple tires are like 2" of super-efficient suspension. They roll smoothly over drainage grates, train tracks and potholes with little complaint.

Puncture Protection

Big Apples feature a Kevlar belt to protect from punctures.

Reflex for Safety

Each Big Apple tire features a reflective stripe so you are immediately, and obviously, visible to cars approaching from the side.
 

Shimano Deore Shadow+ Derailleur

NO MORE CHAIN DROP

Originally developed for mountain bikes—for extra durability and to avoid catching on trail debris—the Shadow+ derailleur is streamlined and incredibly resilient, which comes in handy when you need to transport your folded bike. Whether your bike is bagged on the subway or riding in the trunk of your car, everything is neatly tucked away. And with a clutch to adjust the chain tension, you can now ride on bumpy city roads without worrying about chain drops.
 

Bosch Performance Drive Unit

POWER TRIP

Electric bikes make it easy to ride from A to B. Where it gets interesting? When you’re inspired to visit the rest of the alphabet. The Bosch Performance Drive Unit offers a fine-tuned balance between torque and range. It takes the burden out of hauling kids and groceries. With up to 100 km of range with a standard 400 Wh battery, it’s the market leader in ebike technology.
 

Bosch PowerPack Battery

FEATHER-LIGHT POWERHOUSE

This impressive high-energy, high-power cell clips on and off your bike. The best-in-class design charges fast—from zero—in only 2.5 to 3.5 hours, and lets you ride longer and further between charges. You’ll be impressed by its long lifespan, light weight, and ease of charging. PowerPacks are available in 300/400/500 Wh variants, so you can forget about range anxiety. 

Light Weight

At just 5.5 lb, the weight is practically negligible during riding. The PowerPack is an ingenious balance of performance, size, and weight.

More Mileage

Ride nice and long between charges thanks to best-in-class energy density.

Fast Charging

High-power density allows the PowerPack to charge to 50% in just 1.5 hours and fully in just 2.5 – 3.5 hours* (*Requires optional 4A Bosch Standard Charger).
 

Long Lifespan

PowerPacks are designed for many tours, miles, and years of service. The integrated Battery Management System protects the battery from overcharging, undervoltage, overheating, and short circuiting.

Ergonomic

The ergonomically designed handle makes it easy to insert and remove the PowerPack for charging. Charge it easily on or off the bike.

Bosch Purion Control Panel

COMPACT CONTROL CENTER

The on-board computer lets you switch between five different riding modes, and feeds you handy information like speed, battery level, and distance. It optimizes shifting actions and constantly updates you on the remaining range, just like a typical German car. Best of all, it’s now more compact and robust than ever.
 

Luggage Socket™

CARRY MORE STUFF

Fix the Tern Luggage Truss to the Luggage Socket and you can plug in your choice of front luggage: rack, basket, or bag. If it’s KlickFix compatible, it’ll work.
 

720° Visibility

SEE AND BE SEEN

You need to be safe when you’re out on the road. That’s why we’ve designed our hard-core commuter bikes with 720° Visibility: 360° of active lighting and 360° of reflectivity.
 

360° Active Lighting

Specially designed lights allow you to be seen from all angles when it’s dark out. Accidents often occur at 90° angles at an intersection so active side lighting is especially important.

360° Reflectivity

Bright car headlights can overwhelm the active lights on a bike and this is why reflectivity is important: the brighter a car’s headlights, the brighter the reflective patches shining back at the driver. Bikes with 360° Reflectivity are visible from every angle to oncoming cars.
 
Atlas Rack

AN ULTRA-ROBUST RACK WITH GSDNA

With structural cues from the heavy-duty Tern GSD, the new Atlas Rack has been massively strengthened and increased in size, with a load capacity of 27 kg (59 lb). This reduces flex for more secure handling when the bike is loaded. Riding with your little one? Add a Thule Yepp Maxi or Nexxt Maxi child seat—no adapters needed. The Atlas Rack is also KLICKfix-compatible, and can hold panniers of different sizes—including the Bucketload Pannier, which was designed to fit every configuration of the Vektron. 

Specifications

Specifications

Brand Tern
Motor Manufacturer Bosch
Motor Model Performance Line (Gen 3)
Battery Size 400WH

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