Electric Bicycles

SUNNIGOO B3 Foldable Fat Tire Electric Bike for Adults – 250W Mountain E-Bike

Conquer steep trails and city avenues alike with the SUNNIGOO B3 foldable fat tire electric bike. Built for adults who take riding seriously, this 20" all-terrain electric bicycle pairs a high-torque 250W motor with a foldable aluminum frame — powerful where you need it, portable when you don't.

Key Features

• 250W Motor & Shimano 7-Speed Precision – A high-torque 250W brushless motor delivers smooth acceleration and real climbing capability, while the Shimano 7-speed gear system lets you match your pedaling to any terrain. Fully compliant with European e-bike regulations at a safety-limited 25 km/h — a legal electric bike for daily commuting and weekend mountain rides.
• Extended Range: 48V 12.5Ah Removable Battery – The high-capacity 48V 12.5Ah (600Wh) lithium-ion battery offers 35–40 km in pure electric mode and up to 50–80 km in pedal-assist. Includes a 100–240V 2A quick charger with EU plug for fast recharging at home or the office.
• All-Terrain 20×4.0" Fat Tires & Sturdy Foldable Frame – Professional-grade Chaoyang fat tires deliver superior shock absorption, maximum traction and stability on sand, snow, mud and gravel. The lightweight aluminum alloy foldable frame keeps the ride rock-solid without sacrificing portability.
• Premium Hydraulic Disc Brakes & Smart LCD Display – Responsive hydraulic disc brakes give smooth, immediate stopping power even on wet or muddy trails. The handlebar-mounted LCD display shows speed, battery level, assist mode and trip mileage in real time.
• Ready to Ride & Hassle-Free Support – Ships 85% pre-assembled (SKD) so you ride in minutes. Fast, tax-free EU/US delivery from local warehouses in 3–7 business days, backed by a 1-year warranty and 24/7 customer support.

Technical Specifications

Your Legal Ticket to Off-Road Fun

The SUNNIGOO B3 is the foldable fat tire electric bike that lets you ride where you want without the paperwork. As a 250W electric mountain bike capped at 25 km/h, it complies with EU regulations for standard electric bicycles — no registration, no licence in most member states. That means you can use the B3 as your daily commuter e-bike during the week and take it straight onto gravel trails at the weekend. It's one bike, two lives.

Fold It, Store It, Take It Anywhere

Unlike bulky e-bikes that dominate your hallway, the B3's foldable electric bike frame collapses in seconds for storage under a desk or in a car boot. For riders who compare folding fat tire e-bikes, the B3 stands out by combining genuine mountain-bike capability — wide 4.0-inch tires, hydraulic disc brakes and 7-speed Shimano — with a package that fits a modern European apartment.

Built to Last, Backed to Match

Every component is chosen for real-world abuse: Chaoyang tires for traction, hydraulic discs for wet-road safety, and a corrosion-resistant aluminum frame for years of service. With an EU warehouse shipping 85% pre-assembled, a 1-year warranty and 24/7 support, the B3 is the electric bicycle for adults who want adventure without risk.

Whether it's the morning commute or a weekend trail run, the SUNNIGOO B3 folding fat tire e-bike delivers power, comfort and freedom in one package — and it's backed by SUNNIGOO's European support. Order today and take the long way home.

SUNNIGOO C91 1000W Electric Bike for Adults — High-Speed Fat-Tire E-Bike, 150 kg Load

The SUNNIGOO C91 is a 1000W high-speed fat-tire electric bike built for adult riders who want more power, more load capacity and more terrain freedom than a standard 250W pedelec. With a 48V 1000W motor, a top speed of 55 km/h, a 150 kg max load and a removable battery up to 48V 20Ah, the C91 is ready for private-road riding, trails and heavy cargo. It ships from our EU warehouse with delivery in 3–5 working days and is backed by a 2-year warranty.

What is the SUNNIGOO C91?

The C91 is a high-power fat-tire electric bike for experienced riders. Its 1000W motor and 20×4.0 inch tires give it the torque and grip to handle gravel paths, sand, wet roads and light off-road use, while the 7-speed drivetrain and five pedal-assist modes let you choose between relaxed cruising and full-throttle acceleration. It is not a standard EU pedelec, so public-road use may require local registration as a moped.

How fast is the C91?

The C91 reaches a top speed of 55 km/h on private roads and permitted open ground. The motor responds quickly from a standstill and holds speed confidently even with a passenger or cargo on the rear rack. Always wear a helmet and respect local speed limits and road-use rules.

What range can I expect from the C91?

Range depends on the battery you choose. With the 48V 17.5Ah battery, expect roughly 50–70 km in mixed real-world riding. With the 48V 20Ah battery, expect 60–80 km under test conditions (75 kg rider, flat dry road, eco pedal assist). Heavier loads, hills, cold weather and high speeds reduce range.

Is the C91 legal on European roads?

The C91 is rated at 1000W continuous power and 55 km/h, which is above the 250W / 25 km/h limit for EU pedelecs in most countries. It is intended for private land, trails and roads where local law allows higher-powered e-bikes. In Germany and several other EU markets it may need to be registered and insured as a moped. Please check your national StVZO or equivalent rules before riding on public roads.

What is the weight and max load of the C91?

The C91 weighs 32 kg net and 43 kg gross in the box. Its reinforced aluminum-alloy frame and double-shock rear suspension are rated for a 150 kg maximum load, enough for most adult riders plus a backpack or pannier load. The 170 × 70 × 105 cm frame size suits riders from approximately 165 cm to 195 cm.

How long does the C91 battery take to charge?

Using the included 48V smart charger, a full charge takes 4–8 hours depending on battery capacity and starting level. The battery is removable and locks with a key, so you can charge it indoors at home or in the office. A typical 500–800 full charge-cycle lifespan means years of regular use.

What is included in the box and where can I get service?

Each C91 ships 90% pre-assembled in a 146 × 32 × 78 cm carton. The box contains the bike, charger, basic tools, user manual and pedals. Spare parts, extra batteries and service support are available through SUNNIGOO’s EU support channel. For warranty claims, keep your order number and the original packaging.

Technical Specifications

Built for Power, Load and Rough Terrain

The C91’s 20×4.0 inch fat tires spread weight over a wide contact patch, giving it grip on gravel, wet tarmac and sand that standard city tires cannot match. The dual shock absorbers and front + rear disc brakes keep the ride controlled when the surface is uneven or the load is heavy. A USB charge port on the battery lets you keep a phone or GPS powered on longer rides.

Three Battery Options for Different Rides

Choose the battery that fits your mileage. The 15Ah battery is the lightest and most compact option for short daily loops. The 17.5Ah battery balances weight and range, while the 20Ah battery delivers the full 60–80 km quoted range. All batteries use the same key-locked mount and can be charged off the bike.

Frequently Asked Questions

Who is the C91 designed for?

The C91 is designed for experienced adult riders who want a powerful, high-load electric bike for private roads, trails and permitted areas. It is not a beginner or standard commuter pedelec.

Can I ride the C91 on public roads in the EU?

In most EU countries the C91 exceeds the 250W / 25 km/h pedelec limit. Public-road use may require registration, insurance and a helmet. Always check local regulations before riding on public roads.

How far can the C91 travel on one charge?

Expect 50–70 km with the 17.5Ah battery or 60–80 km with the 20Ah battery under ideal test conditions. Real-world range is lower with hills, heavy loads, cold weather or high speeds.

How long does the battery last before it needs replacing?

The lithium battery is rated for roughly 500–800 full charge cycles before noticeable capacity loss. With normal use this usually means several years of service.

Does the C91 come with a charger and tools?

Yes. The box includes a 48V smart charger, basic assembly tools, pedals and the user manual. The bike arrives about 90% assembled.

What warranty covers the C91?

SUNNIGOO provides a 2-year warranty on the frame, motor and battery against manufacturing defects, plus EU-based support for spare parts and service.

Explore Related Models

Compare the C91 with other electric bikes in the SUNNIGOO lineup, all shipped from EU warehouses:

• SUNNIGOO M1 — 250W city e-bike, up to 120 km range
• SUNNIGOO M2 PLUS — torque-sensor premium city e-bike
• SUNNIGOO B1 — 250W folding fat-tire e-bike

SUNNIGOO B5 Urban Electric Bike – 20×4.0" Fat Tire E-Bike with 600Wh Battery & 120 km Range

The SUNNIGOO B5 urban electric bike is built to move confidently through the city and beyond. With a powerful 600Wh battery, oversized 4.0" tires and EU-compliant Pedelec performance, the B5 blends daily commuting comfort with genuine all-terrain capability — no licence required to ride across the EU.

Key Features

• 600Wh Battery, Up to 120 km Combined Range – The removable 48V 12.5Ah (600Wh) lithium battery delivers 35–40 km in throttle mode and 50–80 km in pedal-assist — up to 120 km combined on a single charge. Charge anywhere with the included 100–240V EU-round-plug charger.
• 20×4.0" Fat Tires for All-Terrain Confidence – Wide Chaoyang fat tires soak up cobblestones, gravel, mud and light snow, giving the B5 the stability of an off-road bike while staying nimble on tight city streets. The compact 20-inch wheels make storage easy in apartments, elevators and car trunks.
• Smooth, EU-Legal Power Delivery – A rear motor paired with Shimano 7-speed gearing provides smooth pedal assistance up to 25 km/h — perfectly compliant with EU e-bike standards, so you ride without registration or a licence across most of the EU.
• Hydraulic Disc Brakes, Front & Rear – Stop with confidence in any weather: front and rear hydraulic disc brakes deliver strong, consistent stopping power on wet cobblestones, gravel trails and steep urban descents.
• LCD Display & Everyday-Ready Design – A built-in LCD screen keeps speed and battery level in view. The lightweight aluminum alloy frame (33 kg net weight) stays practical for daily use, while the rear rack and front basket mounts make it ideal for grocery runs, deliveries and weekend errands. Available in White and Military Green.

Technical Specifications

The Urban E-Bike That Keeps Up With Your Week

The SUNNIGOO B5 is the urban electric bike for riders whose week looks like a checklist: commute, school run, grocery run, weekend errands. Thanks to the 600Wh battery and up to 120 km combined range, you can ride several days between charges. The front basket mounts and rear rack turn this fat tire e-bike into a proper cargo-friendly city machine — no car needed for the daily load.

Fat Tires, City Manners

Big tires usually mean a big, heavy bike. The B5 keeps the best of both: 20×4.0" fat tires for cushioning and grip, but in a compact 20-inch wheel format that's easier to manoeuvre and store than a 26-inch fat bike. It's an electric bicycle equally at home on canal paths, cobblestone squares and light gravel trails — with EU Pedelec compliance meaning no licence, no registration across most of the EU.

A Pedelec You Can Trust

From the hydraulic disc brakes that stop you safely in the rain to the 85% pre-assembled delivery that has you riding in minutes, the B5 is designed to be dependable. It ships from the EU warehouse in 3–5 business days, with local pickup available in Germany within 24 hours — and it's backed by verified rider reviews, so you buy with confidence.

For riders who want a stylish, practical urban e-bike with real range and all-weather confidence, the SUNNIGOO B5 delivers. With its 600Wh battery, fat tires and EU-legal performance, it's ready to become the most useful thing you own. Order today and enjoy fast EU delivery.

Explore Related Models

Compare with other certified models in the SUNNIGOO lineup, all shipped from our EU warehouses:

• SUNNIGOO B1 (20×4.0" folding fat-tire e-bike) — folding fat-tire e-bike.
• SUNNIGOO B4 (full-suspension folding e-bike) — full-suspension folding e-bike.
• SUNNIGOO C91 (1000W, 48V 20Ah fat-tire e-bike) — high-speed fat-tire e-bike.

SUNNIGOO B4 Full Suspension Folding Electric Bike – 20×4.0" Fat Tire Off-Road Commuter E-Bike

Meet the SUNNIGOO B4 full suspension folding electric bike — built for riders who want comfort on cobblestones and capability on trails. This 20×4.0" fat tire e-bike blends daily city commuting with off-road adventures, delivering exceptional stability, cushioning and control on every surface.

Key Features

• High-Capacity Removable Battery – Powered by a 48V 12.5Ah (600Wh) removable lithium battery, the B4 delivers 35–40 km in pure electric mode and 50–80 km in pedal-assist. Charge easily at home or work with the standard EU round plug.
• Smooth & Reliable 250W Power – A 250W motor paired with a Shimano 7-speed gear system gives smooth acceleration and a top speed of 25 km/h, fully compliant with European e-bike regulations.
• Superior All-Terrain Handling – Chaoyang 20×4.0" fat tires and a hydraulic disc brake system deliver maximum grip, safety and reliable stopping power on sand, snow, gravel and city streets.
• Full Suspension & Space-Saving Design – The high-strength aluminum alloy frame features full-suspension elements for a smoother, more comfortable ride, and folds down quickly for storage in car trunks or small spaces.
• Smart LCD Display & Everyday Comfort – Track speed, battery level and mileage on the built-in LCD speedometer, with a rear luggage rack for practical everyday use.

Technical Specifications

Comfort Is the Point

Most folding electric bikes in this class save money by skipping suspension. The SUNNIGOO B4 doesn't. With full suspension built into the aluminum alloy frame and 4.0-inch fat tires absorbing the bumps, this off-road commuter e-bike keeps you comfortable on cobblestone streets, canal paths and light trails. For riders who want a suspension electric bike without the price tag of a full-suspension mountain e-bike, the B4 is the smart middle ground.

One Bike for Both Worlds

The B4's dual personality is its biggest strength: it's a commuter ebike that handles the daily grind — removable battery, LCD display, rear rack for groceries — and an all-terrain electric bike for weekend escapes. Wide tires and hydraulic disc brakes give you the confidence to switch from tarmac to gravel without missing a beat.

Durable, Foldable, Livable

European city living means space is limited. The B4's foldable electric bicycle frame collapses quickly, so this full-featured fat tire e-bike lives happily in a hallway corner or car boot when not in use — no garage required.

The SUNNIGOO B4 is the full suspension electric bike for riders who refuse to choose between comfort and capability. Backed by SUNNIGOO's European support and fast EU shipping, it's ready for your commute, your weekend, and everything in between.

Explore Related Models

Compare with other certified models in the SUNNIGOO lineup, all shipped from our EU warehouses:

• SUNNIGOO B1 (20×4.0" folding fat-tire e-bike) — folding fat-tire e-bike.
• SUNNIGOO B5 (20" urban fat e-bike, 600Wh) — urban fat-tire e-bike.
• SUNNIGOO C91 (1000W, 48V 20Ah fat-tire e-bike) — high-speed fat-tire e-bike.

SUNNIGOO B1 Folding Electric Bike for Adults – 20×4.0" Fat Tire E-Bike

Upgrade your city riding and off-road adventures with the SUNNIGOO B1 folding electric bike. Specially engineered for adults who want flexibility, style and efficiency, this 20×4.0" fat tire e-bike delivers outstanding balance, power and long-range performance on every surface — from morning commutes to weekend gravel trails.

Key Features

• 250W EU Standard Electric Bike Motor – A compliant 250W high-efficiency motor paired with a Shimano 7-speed drivetrain delivers smooth hill climbing and a safe, regulation-friendly top speed of 25 km/h — the right balance of power and legality for an adult e-bike in Europe.
• Long-Range Removable Battery – 48V 12.5Ah (600Wh) – Ride 35–40 km in pure electric mode and up to 50–80 km in pedal-assist on this long range electric bike. The removable battery charges conveniently at home or the office with the included EU round-plug charger (100–240V, 2A).
• All-Terrain 20×4.0" Fat Tires with Hydraulic Disc Brakes – Premium Chaoyang fat tires and high-precision hydraulic disc brakes give this fat tire electric bike maximum grip, shock absorption and stopping power on city streets, gravel and wet roads.
• Lightweight Foldable Aluminum Frame (28.3 kg) – A durable yet lightweight aluminum alloy frame folds down in seconds — easy storage in car trunks, apartments or on the train. Truly a portable e-bike built for modern urban living.
• LCD Display & Commuter-Ready Design – A bright LCD speedometer tracks speed, battery level and distance, complemented by an integrated front light and a heavy-duty rear cargo rack — everything a daily commuter e-bike needs, out of the box.

Technical Specifications

The Everyday Electric Bike for City & Beyond

The SUNNIGOO B1 is the folding electric bike designed around real daily life. Whether it's the morning commute, the school run, or a grocery trip through town, this electric bicycle replaces the car for short and mid-distance trips. With a 48V battery, a 250W motor and a practical rear cargo rack, the B1 turns everyday errands into effortless rides — no driving licence, no parking fees, no traffic stress.

20×4.0" Fat Tires: Confidence on Every Surface

Wide 4.0-inch Chaoyang fat tires are the heart of this all-terrain electric bike. On wet cobblestones, gravel paths, forest tracks or winter roads, the large contact patch keeps you stable and comfortable, while the hydraulic disc brakes provide immediate, reliable stopping power. This fat tire e-bike is equally at home on asphalt and off-road — one bike, no limits.

Folds in Seconds: Made for Modern Living

Space is precious in European cities, and the SUNNIGOO B1 respects that. The aluminum alloy frame folds down quickly and compactly, so you can store this portable e-bike under a desk, in a hallway closet, or in the boot of a car. It is also an ideal foldable electric bicycle for mixed commutes — ride to the station, fold, and board the train or bus.

Long-Range Battery: Ride Further, Worry Less

The removable 48V 12.5Ah (600Wh) battery delivers up to 80 km in pedal-assist mode — enough for several days of commuting on a single charge. And because the battery is removable, you can charge it indoors at home or at the office with the included EU charger. For riders who compare e-bike range before buying, the B1's 35–40 km (electric) and 50–80 km (pedal-assist) figures speak for themselves.

EU-Compliant, Ready to Ride

As a 250W e-bike with a 25 km/h top speed, the SUNNIGOO B1 is designed in line with EU regulations for standard electric bicycles — no registration, no licence in most member states (always check local rules). It ships in 85% SKD packaging with the front wheel unassembled, so delivery is fast and damage-free, and assembly takes minutes.

Who Is the SUNNIGOO B1 For?

The B1 is for adults who want a reliable, good-looking electric bicycle without overpaying: daily commuters, weekend explorers, seniors who want a stable ride, and anyone who wants to leave the car behind. With a net weight of just 28.3 kg, it is one of the more practical folding e-bikes in its class.

Every SUNNIGOO B1 is built with premium components — Shimano drivetrain, Chaoyang tires, hydraulic disc brakes and a corrosion-resistant aluminum frame — because a folding electric bike should last for years, not seasons. Backed by SUNNIGOO's European-focused support and fast EU shipping, the B1 is the smart, stylish way to make every ride easier. Order yours today and feel the difference on your first commute.

Frequently Asked Questions

Is the SUNNIGOO B1 legal on European roads?

The SUNNIGOO B1 is a 250W pedelec with a 25 km/h top speed, classifying it as a standard electric bicycle under EU Directive 2002/24/EC. In most EU member states—including France, Spain, Germany and Italy—it can be ridden on public roads without registration, licence or insurance. Always check local regulations, as helmet and lighting rules vary by country.

How fast is the SUNNIGOO B1?

The B1 reaches a governed top speed of 25 km/h (15.5 mph) in electric-assist mode, in line with EU e-bike regulations. The Shimano 7-speed drivetrain lets you pedal faster downhill or on flat sections, while the 250W motor provides smooth, continuous assistance up to the legal limit.

How far can the B1 go on a single charge?

In pure electric (throttle) mode, expect 35–40 km. In pedal-assist mode, range extends to 50–80 km depending on assistance level, terrain and rider weight. These figures are measured with a 75 kg rider on flat roads at 25°C without wind. Hilly routes, heavy loads or cold weather will reduce range.

What is the weight and max load of the B1?

The B1 weighs 28.3 kg net (35.4 kg gross with packaging) and folds down to fit in car boots and small storage spaces. The aluminum alloy frame supports a maximum rider weight of 120 kg, plus the rear cargo rack can carry additional bags or groceries for daily commuting.

How long does it take to charge the battery?

The removable 48V 12.5Ah (600Wh) battery charges from empty to full in approximately 5–6 hours using the included EU round-plug charger (100–240V, 2A). Because the battery is removable, you can charge it at home, in the office or anywhere with a standard wall outlet—no special installation required.

What's in the box?

Your B1 arrives in 85% SKD packaging (front wheel unassembled) with: the folding aluminum frame with rear-mounted motor, 48V 12.5Ah removable battery, EU charger, LCD display with control panel, front LED light, rear cargo rack, Chaoyang 20×4.0" fat tire (front wheel separate), hydraulic disc brake system, assembly tools and a printed user manual. Assembly takes 15–20 minutes.

Explore Related Models

Compare with other certified models in the SUNNIGOO lineup, all shipped from our EU warehouses:

• SUNNIGOO B4 (full-suspension folding e-bike) — full-suspension folding e-bike.
• SUNNIGOO B5 (20" urban fat e-bike, 600Wh) — urban fat-tire e-bike.
• SUNNIGOO C91 (1000W, 48V 20Ah fat-tire e-bike) — high-speed fat-tire e-bike.