
Vektron S10: Our Best Bosch Folding Electric Bike
The Accelerator
What makes it special?
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.
Highlights
- 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 V Rack™, integrated 8 point mounting; Max load weight: 27 kg (60 lb) works seamlessly with Thule Yepp Maxi and Dash® RM 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
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
FREINS PUISSANTS
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 V Rack
AN ULTRA-ROBUST RACK WITH GSDna
With structural cues from the heavy-duty Tern GSD, the new Atlas V 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 Dash® RM child seat—no adapters needed. The Atlas V 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.
Gallery
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Specifications
General Info
- Generation
- Gen 3
- Color(s)
- Satin Black, Silver
- Speeds
- 1 x 10
- Weight
- 22.1 kg (48.7 lb)
- Gear Inches
- 30" - 97" (2.36 - 7.72 m)
- Frame Sizes
- One size
- Folding Size
- 40 × 85.5 × 67.5 cm (15.7 × 33.7 × 26.6 in)
- Folding Time
- 10 sec
- Distance: Seatpost to Handlebar
- 62 - 69 cm (24.4 - 27.2 in)
- Distance: Saddle to Pedal
- 67 - 110 cm (26.4 - 43.3 in)
- Suggested Rider Height
- 147 - 195 cm (57.9 - 76.8 in)
- Max Gross Vehicle Weight
- 125 kg (275.6 lb)
- Max Rider Weight
- 105 kg (231.5 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 & Nipples
- Stainless steel, double-butted
- Rims
- Kinetix Comp, for disc
- Tyres
- Schwalbe Big Apple, Performance Line, 55-406, puncture protection, Reflex
Transmission
- Shifter
- 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 25 kph (EU); max speed 20 mph (US)
- Battery
- Bosch PowerPack 400 Wh
- Display
- Bosch Purion, 4 mode selectable, walk assist
- Range
- 400 Wh: 53 -106 km (34-68 mi)
- Charger
- 220V, 4A (EU); 100-240V, 4A (US)
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
- Atlas V Rack™, integrated 8 point mounting; Max load weight: 27 kg (60 lb)
Please note: These are the manufacturer’s standard specifications for this model. Quoted weight and folded dimensions may not include racks, mudguards or other accessories. Specification for UK-supplied bikes can differ slightly from other markets. We do our best to keep the details here accurate, but Tern may change components from time to time and updates on this page can lag briefly. Component changes may be made without prior notice, so the bike you receive may differ in small ways from the information listed here.