The New Tern Vektron Gen4: The Best Bosch Folding Electric Bike for 2026
Since 2017, the Tern Vektron has set the standard as the most accomplished Bosch-powered folding electric bike on the market. Its combination of a powerful and reliable Bosch drive system, brilliantly engineered frame, and dutiful rear rack has made it one of the most practical and comfortable folding eBikes available.
For 2026, Tern has taken things up a gear — introducing the Bosch Smart System and a low-maintenance belt drive to the Vektron platform. The result is a refined, more connected, and even more capable machine that firmly reasserts the Tern Vektron Gen4 place among the best folding electric bikes in the world.
The Gen4 range launches with two models:
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Vektron P10 – £3,509
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Vektron P5i – £3,800
Both share the same updated frame and folding mechanism, with the P5i featuring a Gates belt drive and internal gear hub for a quieter, lower-maintenance ride, while the P10 offers sportier gearing with a traditional chain setup for those who prefer a more dynamic feel. These new bikes will be arriving into the UK in early 2026.
Rides Like a Big Bike
Folding eBikes often ask you to compromise with ride feel. The Vektron has always been the exception. Its stiff, responsive frame and dialled-in geometry deliver a ride that feels stable and confidence-inspiring, whether you’re weaving through traffic or cruising home from work.
The new model continues to impress with the same compact fold that can be completed in seconds — perfect for multimodal commuting, urban storage, or fitting neatly into the boot of a car.
Upgraded with Bosch Smart System Technology
The Tern Vektron Gen4 now runs the Bosch Smart System, bringing a major leap forward in performance, connectivity, and safety. Riders benefit from Bluetooth connectivity via the eBike Flow app, integrated anti-theft features with eBike Lock, and a UL-certified power system for improved electrical safety.
The new Bosch system also brings quieter operation, smoother torque delivery, and the option to fine-tune assistance levels to your personal riding style — all while maintaining the proven reliability that makes Bosch the go-to system for premium eBikes.
Built to Fit Everyone
The Vektron’s adjustable stem and telescopic seatpost allow it to fit riders from 147 cm – 195 cm (4’10” – 6’5”). It takes seconds to resize without tools, making it ideal for shared use between family members, housemates, or colleagues. The swept-back handlebars and ergonomic grips deliver long-ride comfort, and the upright position gives great visibility in traffic.
Fold, Roll, and Store
Folding the new Vektron is faster and smoother than ever thanks to Tern’s patented OCL+ frame joint and Physis 3D handlepost. Once folded, it can stand upright on its rack ends or roll easily through train stations and lifts — so you’re not carrying 20 kg up the stairs.
Tern clearly listened. The updated frame and folding joints are more user-friendly, while the optional belt-drive configuration provides a quieter, cleaner, and lower-maintenance experience — perfect for daily commuters.
Designed for the Real World
Whether you’re loading it into a car, onto a train, or into your hallway, the new Vektron is made for real-life convenience. The Atlas V rear rack offers a double-rail design that works with top brands like KLICKfix, Racktime, and Ortlieb, meaning you can mount panniers, baskets, or child seats with ease. And because the rack doubles as a parking stand when folded, it’s genuinely practical from every angle.
Tested for Safety and Backed by Experts
Every Vektron is third-party tested for EN 15194 compliance and UL 2849 certified for fire and electrical safety. With Bosch supplying the full drive system and battery, you’re getting proven reliability — and with Fully Charged’s Bosch-trained mechanics, you’ll always have expert aftercare and service support on hand.
Tern also offers a 10-year limited warranty when registered via Tern Care, and guarantees replacement part availability for at least seven years, giving peace of mind that your investment is protected.
Fully Charged Verdict
The new Tern Vektron Gen4 continues to be the gold standard for folding eBikes — now smarter, safer, and even more refined. Whether you’re a commuter, urban explorer, or multi-modal traveller, it’s the ultimate solution for riders who want real bike performance in a foldable format.
Compact. Capable. Connected. This is the folding eBike done right.
The new Tern Vektron Gen4 will be landing in the UK in early 2026 – stay tuned for updates!
