Product Feature
Peak Motor
Max Speed
Per Charge
Large Capacity Battery
Payload Capacity
Fat Tires
Max Torque
Suspension System
Assist System
Battery Certification
BIGNIU BG-S Electric Bike
Use "BGNS50" And Get $50 OFF!
Product Feature
Peak Motor
Max Speed
Per Charge
Large Capacity Battery
Payload Capacity
Fat Tires
Max Torque
Suspension System
Assist System
Battery Certification
US Shipping time: About 3-5 days
Features
✅1200W peak motor
✅Top speed 28+ mph
✅Large Capacity Battery: 48V/15AH
✅80 Nm of torque
✅Full suspension
✅Torque sensor
✅Up to 35 miles of power-assisted range
✅Maximum load capacity 330 lbs
✅20'x4.5" wide tires
Size-Chart
Bike length: 66 in
Bike height: 43 in
Handlebar length: 28 in
Seat height: 30 in
Tire size: 20' * 4.5
Wheelbase: 43 in
Recommended rider height: 5'4"–6'6"
Maximum load: 330 lbs
Manual
Pairs well with
In stock! Ships within 3-5 business days.
12 Month Warranty
30 Day Return
Complimentary shipping & returns
BIGNIU BG-S Electric Bike
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Shipping Information
Shipping fees are covered by BIGNIU and will be completed by FedEx throughout the United States. Once the order is shipped, a shipment confirmation email and shipment tracking will be sent to your email address. ( We DO NOT ship to PO BOXES or APO.) It may take 2-7 days to deliver.
-
30 Day Risk Free Trial
We offer a 30-day trial period for all our brand new Ebike products. If you're not satisfied with the product, BIGNIU's return policy allows you to return it within 30 days of receipt. However, to qualify for this, your product must be free of wear, dirt, and the mileage on the odometer should be less than 10 miles.
-
1 Year Warranty
All BIGNIU ebikes are included in the 1-year all-inclusive warranty provided by our manufacturer for the original owner in case of all manufacturing defects. The warranty service does not include free accessories and batteries). After the initial owner receives the product, he begins to enjoy a 1-year warranty period.
-
Contact Us
If you have any questions regarding products, services, orders, or various types of support, please feel free to contact us.
Mail: Bigniubike@outlook.com
1200W Brushless Motor
Experience the power of a beast with the BG-S electric off-road bike. Equipped with a 1000W brushless motor, it delivers a peak power of 1200W, reaching speeds of 28+ MPH, and boasts an impressive 80NM of torque to effortlessly conquer any terrain.
48V 15Ah Removable Battery
It can travel up to 28+ miles per charge in electric-only mode and up to 50 miles in pedal-assist mode (PAS). The durable 15Ah upgraded detachable battery (with key lock) can be conveniently charged in just 6-7 hours, whether at home or in the office, with an IP64 waterproof rating for added protection.
Full Suspension System
Hydraulic and oil-spring rear shocks smooth out bumps for a comfortable ride.
1000+ Customer Reviews
Trusted by industry experts and professional review agencies who have recognized and evaluated our performance.
Awesome bike. Easy installation and looks solid with smooth ride.
— rich2Sharp E-Bike
My 10 year old has been loving it! Besides it’s faster than mama wants but exactly what he wanted.
— Charle BrandonGreat Bike
Bike is very fun to ride. Easy to put together.
— DtaylorGreat until it wasnt but customer service was great.
If you are in the market for a E-bike look no further!!! This is the bike you want!!! It has amazing performance and has such a smooth ride. I’m always trying to find an excuse to ride this thing and it rides like a dream and very responsive. I’m 250 lbs and this thing hits 28mph no problem at all. Also, out the box, the bike come about 90% together and if your are mechanically incline you will have no problem putting it together. But it!!! Do it!!!
— Michael PellegrinoStop!!! Purchase this one!!!
Performs even better than advertised. I absolutely love it! Customer service is amazing as well!
— glade scotWorth every penny
This bike is beautifully made rides nice and is actually comfortable..when we received it it had an error code but the manufacturer was quick to mail us the necessary parts..highly recommend
— evelyn dominguezWe love it!
Good bike go 39mph when fully charged. But stock breaks are not that good definitely need to upgrade to hydraulics. Overall a good bike comfy and better then a ridstar
— Tito Martínez Good bike goes 39mph when fully charged
It’s better than I thought
— Kenny VelardeIt’s better than I
Fue una Excelente compra!!!!
— Claudia GonzálezFue una Excelente
4.5 WIDETIRE
4.5" tires offer enhanced st- ability traction durability and maneuverability.
Lightweight Aluminum Frame
Sleek curves and durable design combine performance with modern looks.
COMPLETE LIGHTING SYSTEM
Equipped with headlights, taillights
and turnsignals, it improves your overall riding experience, making it safer, more convenient and more enjoyable.
7-SPEED ADJUSTMENTS
Whether you're a beginner or an experienced cyclist, there's a cadence that suits you perfectly.
LCD DISPLAY
Intuitively display speed, mileage, battery level, driving modes and more, providing rich information display and operational functionality.
Mechanical Brakes
Stronger and more reliable than standard brakes, they provide exceptional stopping power and control when it matters most.
Product details
Basic Information
Product Name: 20-inch Aluminum Alloy 4.5" Electric Power-Assisted Bicycle
Brand: BIGNIU
Model: QL20-750
Net Weight: 37 kg
Gross Weight: 44.8 kg (98.8 lb)
Speed: 28 mph
Gear Mode: Electric (1st gear, full speed), Power-Assisted (5 gears, 15 km/h, 2nd gear, 20 km/h, 3rd gear, 25 km/h, 4th gear, 32 km/h, 5th gear, unlimited speed)
Pure Electric Range: 25 miles (flat road, test weight: 60 kg)
Maximum Power-Assisted Range: 35 miles
Applicable Terrain: Flat, Mountain
Gear System: 7-speed SHIMANO
Operating Temperature: -10°C to 50°C
Maximum Gradeability: 30 degrees
Vehicle Body Information
Frame Material: 6061 Aluminum Alloy
Shock Absorption: Mechanical springs on the front fork, hydraulic shocks on the frame
Exterior Color: Army Green, Black
Packaging Dimensions: Length, Width, and Height: 140 x 32 x 85 cm (3rd batch revision: 145 x 31 x 87 cm (56.3 x 11.81 x 33.86 in))
Complete Vehicle Dimensions: 167 x 114 x 72 cm
Folding Dimensions: Non-foldable
Seat Height: 75-80 cm
Wheelbase: 110 cm
Pedal Clearance: 16 cm
Maximum Vehicle Weight: 150 kg
Motor parameters
Rated voltage: DC48V
Motor drive type: Single rear drive
Front and rear wheel dimensions: 20" x 4.5"
Maximum power: 1200W
Maximum torque: 80Nm
Battery Pack Specifications
Rated capacity: 13AH
Single battery capacity: DMEGC 2600/EW
Battery arrangement: 13 series, 5 parallel
Maximum charging voltage: 54.6V
Charging time: 7 hours
Braking System
Brake Type: Mechanical Brake
Disc Brake Rotor Size: 160 x 2.0 mm
Light Infomation
Headlight Specifications: 48V 5W
Operating Current: 0.2A
Operating Voltage: 12V-80V
Electric Horn: Yes
Vehicle Front Information
Handlebar Material: Aluminum Alloy
Stem Type: Threadless
Left Handlebar Accessory Functions: 1. Rear Brake; 2. 3-in-1 Switch (Front and Rear Light Switch, Turn Signal Switch, Horn Function); 3. Instrument Control
Right Handlebar Accessory Functions: 1. Front Brake; 2. Accelerator Grip; 3. 7-Speed Shifter
Tire Information
Tire size: 20 x 4.5"
Tire material: Rubber, butyl inner tube, PVC lining
Instrument Display
Instrument Model: M6H
Instrument Type: LCD
Instrument Controls: Speed, Battery Level, Fault Indicator, Total Mileage, Trip Trip
Instrument Display Information: Battery Level, Total Mileage (ODO/DST), Trip Start Time (TIME), Fault Indicator, Speed Display (AVG/MAX/SPEED), Power Assist (Power Gear) Adjustment, Vehicle Status Icon
Included in the Box
Bike
Charger
Manual
Tookit
