SISIGAD F618 Electric Mountain Bike Review: Can It Handle 50 Miles of Off-Road Adventure?
A powerful off-road e-bike with a peak 1500W motor, 50-mile range, and 450-pound capacity for just $700, but it's heavy at 87 pounds and lacks built-in lights.
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Key Specifications
Best For
How this e-bike scores for different riding styles
Exceptional off-road capability with 26x4-inch fat tires, dual suspension, 1500W peak power, and 450-pound weight capacity. UL-certified construction and dual disc brakes provide confidence on challenging terrain.
Peak 1500W motor delivers 32 mph and strong hill-climbing with 90 Nm torque. Performance is impressive for the price, though not class-leading compared to premium high-performance e-bikes exceeding 40 mph.
Outstanding 450-pound max weight capacity and rear rack support heavy loads. The powerful motor handles cargo easily, though lack of dedicated cargo features like panniers limits utility-specific functionality.
Comfortable dual suspension, 5-level pedal assist, and fat tires make casual riding enjoyable. However, the heavy weight and aggressive mountain bike design are less ideal for leisurely cruising than simpler alternatives.
With 50-mile range and 32 mph top speed, this bike handles commutes well, but the 87-pound weight and lack of integrated lights reduce urban practicality. The removable battery is a plus for apartment charging.
Not foldable and weighs 87 pounds, making this bike extremely impractical for storage or transport. Designed for performance, not portability.
Our Verdict
The SISIGAD F618 is a powerful off-road electric bike that gives you a lot of performance for your money. With a peak 1500W motor that reaches 32 mph and a big 720Wh battery that lasts 50 miles, this bike has the power to handle steep hills and long rides. The fat 4-inch tires grip well on dirt, sand, grass, and gravel, while the front and rear suspension smooth out bumpy trails. It also holds up to 450 pounds, which is way more than most e-bikes can carry. For just $700, you're getting features that usually cost over $1,500 on other brands.
This bike is perfect for people who want to ride on trails, explore the outdoors, or tackle rough terrain. The throttle and 5 levels of pedal assist let you choose how much help you want from the motor. The 7-speed gears give you more control on different surfaces. The dual disc brakes stop you safely even when going fast downhill. If you need to carry camping gear, groceries, or other heavy loads, the rear rack and high weight limit make this a great choice. The removable battery means you can take it inside to charge, which is handy if you live in an apartment.
However, this bike isn't great for everyone. At 87 pounds, it's really heavy and hard to lift into a car or up stairs. There are no built-in lights, so you'll need to buy separate lights if you ride at night or in the early morning. The 6-month warranty is shorter than most e-bikes, which makes you wonder about long-term quality. The carbon steel frame is strong but heavier and can rust if you don't take care of it. If you want a light bike for the city, something that folds up, or a bike with lots of tech features like app control, this isn't the right choice. But if you want a tough, powerful bike for adventures and don't mind the weight, this is a great deal.
What We Like
- Peak 1500W motor hits 32 mph and climbs hills easily with 90 Nm of torque
- Big 720Wh battery gives you 50 miles of riding on one charge
- Holds up to 450 pounds - one of the highest weight limits you'll find
- Fat 4-inch tires and front plus rear suspension let you ride on any surface
- Only $700 for a powerful off-road bike with UL safety certification
What Could Be Better
- Weighs 87 pounds which makes it hard to lift or move around
- No built-in lights means you need to buy and attach your own for night riding
- Only 6 months warranty is shorter than most e-bikes that offer 1-2 years
- Carbon steel frame is heavier and rusts easier than aluminum frames
- Only 14 customer reviews so it's harder to know if it lasts long-term
Standout Features
Full Specifications
Performance
| Motor Power | 750W (Peak 1500W) |
Build & Frame
| Frame Material | Carbon Steel |
| Frame Size | Large |
| Wheel Size | 26 inches |
Weight & Capacity
| Bike Weight | 87 pounds |
Additional Info
| Assembly Required | Yes |
Features
Included Features
Not Included
Frequently Asked Questions
Common questions about SISIGAD Electric Bike for Adults, 1500w | 50Miles | 32Mph Electric Mountain Bike - 48V 15Ah Removable Built-in Battery, 26" Fat Tire Dirt Ebike - 7Speed Shock Absorber E-MTB UL2849 Tested for Commute
How fast can this electric bike go?
It can reach speeds up to 32 mph using the throttle or pedal assist. This is faster than most e-bikes which usually max out at 20-28 mph.
How far can I ride on one battery charge?
You can ride up to 50 miles on a single charge with the 48V 15Ah battery. Real distance depends on how much you use the throttle, how hilly your route is, and how much you weigh.
How much weight can this bike hold?
The bike can safely carry up to 450 pounds total, including the rider and any cargo. This is much higher than most e-bikes that max out at 250-300 pounds.
Is this bike hard to put together when it arrives?
The bike comes mostly assembled already. You'll need to attach the handlebars, pedals, and front wheel. The box includes tools and instructions to help you finish the setup.
Can I ride this bike in the rain or on wet roads?
Yes, the dual disc brakes work well even on wet roads and the fat tires provide good grip. However, you should avoid riding through deep water and make sure to dry and maintain the bike after riding in rain to prevent rust on the steel frame.
Best For
How this e-bike scores for different riding styles
Exceptional off-road capability with 26x4-inch fat tires, dual suspension, 1500W peak power, and 450-pound weight capacity. UL-certified construction and dual disc brakes provide confidence on challenging terrain.
Peak 1500W motor delivers 32 mph and strong hill-climbing with 90 Nm torque. Performance is impressive for the price, though not class-leading compared to premium high-performance e-bikes exceeding 40 mph.
Outstanding 450-pound max weight capacity and rear rack support heavy loads. The powerful motor handles cargo easily, though lack of dedicated cargo features like panniers limits utility-specific functionality.
Comfortable dual suspension, 5-level pedal assist, and fat tires make casual riding enjoyable. However, the heavy weight and aggressive mountain bike design are less ideal for leisurely cruising than simpler alternatives.
With 50-mile range and 32 mph top speed, this bike handles commutes well, but the 87-pound weight and lack of integrated lights reduce urban practicality. The removable battery is a plus for apartment charging.
Not foldable and weighs 87 pounds, making this bike extremely impractical for storage or transport. Designed for performance, not portability.
Scores
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