SUNNIGOO
SUNNIGOO C91 1000W Electric Bike for Adults | 48V 20Ah Fat-Tire E-Bike, 55 km/h, 150 kg Load
$981.00
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
| Product Type | High-power fat-tire electric bike |
| Motor | 48V 1000W brushless hub motor |
| Peak Speed | 55 km/h (private land / registered use) |
| Battery Options | 48V 15Ah / 17.5Ah / 20Ah removable, key-locked |
| Range | 17.5Ah: 50–70 km; 20Ah: 60–80 km (test conditions) |
| Charging Time | 4–8 hours |
| Tires | 20" × 4.0" fat tires |
| Brakes | Front + rear mechanical disc brakes |
| Suspension | Dual shock absorbers |
| Drivetrain | 7-speed, 5 pedal-assist modes |
| Front Light | 7.3W LED headlight |
| Max. Load | 150 kg |
| Product Size (L×W×H) | 170 × 70 × 105 cm |
| Net Weight | 32 kg |
| Gross Weight | 43 kg |
| Delivery | EU warehouse, 3–5 working days |
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 C91 1000W Electric Bike for Adults | 48V 20Ah Fat-Tire E-Bike, 55 km/h, 150 kg Load
$981.00
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Estimated delivery between September 15 and September 17. Order within .
🛡️1-Year Frame Warranty & 6-Month Electrical Parts Warranty
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💬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 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
| Product Type | High-power fat-tire electric bike |
| Motor | 48V 1000W brushless hub motor |
| Peak Speed | 55 km/h (private land / registered use) |
| Battery Options | 48V 15Ah / 17.5Ah / 20Ah removable, key-locked |
| Range | 17.5Ah: 50–70 km; 20Ah: 60–80 km (test conditions) |
| Charging Time | 4–8 hours |
| Tires | 20" × 4.0" fat tires |
| Brakes | Front + rear mechanical disc brakes |
| Suspension | Dual shock absorbers |
| Drivetrain | 7-speed, 5 pedal-assist modes |
| Front Light | 7.3W LED headlight |
| Max. Load | 150 kg |
| Product Size (L×W×H) | 170 × 70 × 105 cm |
| Net Weight | 32 kg |
| Gross Weight | 43 kg |
| Delivery | EU warehouse, 3–5 working days |
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:
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.