SUNNIGOO
SUNNIGOO B1 Adult Folding Electric Bike – 20x4.0" Fat Tire E-Bike | 250W EU Standard Motor | 48V 12.5Ah Removable Battery | 7-Speed Electric Bicycle
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
| Product Type | Adult folding electric bike (e-bike) |
| Motor | 250W high-efficiency motor (EU standard) |
| Max. Speed | 25 km/h |
| Battery | 48V 12.5Ah (600Wh) removable lithium-ion |
| Charger | EU round plug, 100–240V, 2A |
| Range – Pure Electric | 35–40 km |
| Range – Pedal Assist | 50–80 km |
| Drivetrain | Shimano 7-speed |
| Tires | Chaoyang 20×4.0" fat tires |
| Brakes | Hydraulic disc brakes |
| Frame | Aluminum alloy, foldable |
| Display | LCD speedometer |
| Front Light | Integrated LED front light |
| Rear Rack | Heavy-duty rear cargo rack |
| Colors | Black / Khaki / Grey |
| Net Weight | 28.3 kg |
| Gross Weight | 35.4 kg |
| Package Dimensions | 144 × 29 × 72 cm |
| Packaging | 85% SKD (front wheel unassembled) |
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.
SUNNIGOO B1 Adult Folding Electric Bike – 20x4.0" Fat Tire E-Bike | 250W EU Standard Motor | 48V 12.5Ah Removable Battery | 7-Speed Electric Bicycle
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Disponibile - Pronto per essere spedito
Estimated delivery between settembre 06 and settembre 08. Order within .
🛡️1-Year Frame Warranty & 6-Month Electrical Parts Warranty
🔒 Secure Checkout: VISA, Mastercard, PayPal
💬24/7 Technical Support
1. Power & Gradeability Tests
Performance: Our motors are tested to maintain consistent power output under heavy loads.
Incline Mastery: Each model is verified to conquer inclines, ensuring seamless navigation through underground garages and city overpasses.
2. Battery Endurance & Safety
Real-World Range: We conduct multi-environment range tests. Our high-capacity Lithium-ion batteries are proven to deliver km depending on the riding mode (Pure Electric vs. PAS).
Thermal Management: Batteries are tested for charging efficiency and heat dissipation to prevent overheating and ensure a long lifecycle.
3. All-Terrain & Shock Absorption
Surface Adaptation: whether from 10-inch puncture-resistant tires to 20-inch Chaoyang fat tires, we test grip and stability on wet asphalt, gravel, sand, and snow.
Suspension Rigidity: Our full-suspension and hydraulic systems undergo thousands of compression cycles to guarantee a "smooth-as-silk" ride on uneven urban roads.
4. Safety & Braking Precision
Stopping Power: We equip our vehicles with Dual Braking Systems (Hydraulic Disc or Electronic Brakes). Every batch is tested for immediate stopping distance, even at maximum speeds.
Visibility: Integrated LED lighting and signal systems are vibration-tested to ensure 360° visibility in low-light or high-impact conditions.
5. Structural Integrity & Material Quality
Load-Bearing: Our Aerospace-grade Aluminum Alloy frames and premium silicone pedals are tested for corrosion resistance and anti-slip durability.
Quality Control: With 99% self-developed components, we ensure unparalleled consistency and mechanical reliability across our entire lineup.
Fast Delivery: E-bikes ship from our warehouses in Germany and Italy; e-scooters ship from Germany, Poland and France. Expect your bike to arrive within 3-7 days.
Shipping & Tax: We offer free shipping on most orders. Prices include VAT for EU deliveries.
Official Warranty: Every SUNNIGOO product purchase is protected by an official warranty: 1 year on the frame, 6 months on motor, controller, display and charger, and 3 months on the battery.
Professional Support: Our technical team provides 24/7 online support to assist with assembly, maintenance, or troubleshooting.
Ready to Ride: Arrives in 85-90% SKD packing mode, ensuring the product is nearly ready for use right out of the box with minimal assembly required.
Sustainable Commuting: The SUNNIGOO product is designed to provide a high-performance alternative to fossil-fuel vehicles, helping riders significantly reduce their personal carbon footprint.
Efficient Energy Management: Our high-capacity lithium-ion battery utilizes optimized energy consumption technology to maximize battery life cycle and reduce electronic waste.
Durable Engineering: By using a lightweight aluminum alloy frame and professional-grade components like Shimano and Chaoyang, we create a durable product meant for years of use rather than frequent replacement.
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
| Product Type | Adult folding electric bike (e-bike) |
| Motor | 250W high-efficiency motor (EU standard) |
| Max. Speed | 25 km/h |
| Battery | 48V 12.5Ah (600Wh) removable lithium-ion |
| Charger | EU round plug, 100–240V, 2A |
| Range – Pure Electric | 35–40 km |
| Range – Pedal Assist | 50–80 km |
| Drivetrain | Shimano 7-speed |
| Tires | Chaoyang 20×4.0" fat tires |
| Brakes | Hydraulic disc brakes |
| Frame | Aluminum alloy, foldable |
| Display | LCD speedometer |
| Front Light | Integrated LED front light |
| Rear Rack | Heavy-duty rear cargo rack |
| Colors | Black / Khaki / Grey |
| Net Weight | 28.3 kg |
| Gross Weight | 35.4 kg |
| Package Dimensions | 144 × 29 × 72 cm |
| Packaging | 85% SKD (front wheel unassembled) |
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
Shipping & Delivery
E-bikes ship from our warehouses in Germany and Italy; e-scooters ship from Germany, Poland and France. Every order is dispatched from within the EU, so there is no long ocean-freight wait, no surprise customs clearance, and delivery is faster and more predictable.
Most EU orders arrive within 3–7 business days from dispatch. You’ll receive a confirmation email with your tracking number as soon as your bike leaves the warehouse.
Yes. Once your order is dispatched, we send you a tracking link by email so you can follow your bike from our warehouse to your door in real time.
Your bike arrives in a compact box, 85–90% pre-assembled. You only need to attach the front wheel, handlebar and pedals — typically 20–30 minutes with the included tools and illustrated guide.
Payment & Orders
We accept Visa, Mastercard and PayPal through our secure checkout. All transactions are encrypted and processed through Shopify’s certified payment gateway.
Absolutely. Our checkout is SSL-encrypted and your card details are never stored on our servers — they go directly to our certified payment provider.
If your order hasn’t shipped yet, we’re happy to change or cancel it — just contact our support team with your order number. Once dispatched, the order can be returned under our standard policy.
Yes. We support dropshipping, wholesale and OEM/ODM partnerships with tiered pricing. Contact our team for a tailored quote.
Warranty & Support
Please contact our 24/7 support team with photos of the issue and your order number. We’ll send replacement parts or arrange a resolution as quickly as possible — no long forms, no runaround.
Every SUNNIGOO bike includes a 1-year frame warranty, 6-month cover for the motor, controller, display and charger, and a 3-month battery warranty. Tyres, brake pads and saddles are not covered by warranty, but we replace them free of charge in case of factory defects. See our Warranty Policy for full details.
Contact our support team with your order number, a short description and photos (or a short video) of the issue. We’ll assess it within 24–48 hours and ship the necessary parts or arrange a repair. The full claim process is explained on our Warranty & Support page.
Yes. Under EU consumer law you have a 14-day right of withdrawal from delivery. As long as the bike is unused and in its original packaging, we’ll refund the full purchase price once we receive it.
About Your SUNNIGOO
Yes. SUNNIGOO e-bikes sold in the EU are engineered to comply with European e-bike regulations, including the CE EN15194 standard, with pedal-assist up to 25 km/h — legal on European roads and bike paths without registration or a licence. Check your model’s specifications for its exact motor rating.
Range varies by model — many of our e-bikes deliver up to 120 km on a single charge in eco mode, measured with a rider around 75 kg on flat terrain. Real-world range depends on your weight, terrain, assist level and weather. Check the specifications of your model for its exact range.
Yes — the battery is fully removable, so you can lock the frame outside and charge the battery indoors at home or at the office.
Very little. Keep the tyres inflated, the brake pads adjusted and the chain lubricated, and your e-bike will stay reliable for years. If anything needs attention, our support team is available 24/7.