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The Oraimo Monster 100 is a budget 26” electric mountain bike that combines stylish looks with a number of great features (for the price point). From a 21-speed Shimano transmission to dual disc brakes to a fast charging battery, the Monster 100 ebike provides a great value for just $599!
Oraimo is a top brand for affordable electric bikes on Amazon. No matter if you’re looking for a bike to ride on smooth roads or you want to try off-road adventures, Oraimo has a super-cheap range of super-awesome ebikes. But when it comes to the Monster 100 electric bike, the folks at Oraimo have gone too far.

While the Monster 100 might not be as good as the fancy high-end eMTBs, it’s still cool when you think about its features. You have 21-speed Shimano gears, a front fork, and a fast charging battery… for just under $600. Even though the bike is not super expensive, it has made no compromises on quality or performance. Let’s take a closer look at what this ebike offers.

Oraimo Monster 100

Top Speed*
Tested Range*
Max Load

*To ensure the most accurate evaluation, these tests are done independently with our rider. Please note that our results may differ from the manufacturer’s claims and are intended to provide a transparent and unbiased assessment of each bike’s capabilities.


Super-budget tag
21-speed Shimano gears
Lightweight aluminum frame
Fast charging battery
Doesn’t come with fenders
Doesn’t come with lights
Not suitable for off roading

Performance Review

The Oraimo Monster 100 electric bike has a Bafang motor at the rear hub that runs on a 36-volt battery and gives out 350 watts of nominal (and 500 watts of peak) power. The bike has 3 different modes to move: one where you pedal like a regular bike, another where the motor helps you as you pedal, and a third where you use a throttle to go fully electric. When you use the pedal-assist mode, there are 5 levels that you can choose from, and the bike uses a cadence sensor to detect pedaling inputs.

Performance Summary

Top Speed
21.3 mph
25.4 miles
Acceleration (0 to 20 mph)
14-15 seconds
Braking Distance (20 to 0 mph)
*to be tested

Top Speed

The Oraimo Monster 100 falls into the Class 2 category of e-bikes, which means it’s meant to go up to 20mph. That speed is quite decent for most things, but I couldn’t resist unlocking it to see how fast it can go. Once I did that, I reached a speed of 21.3mph on a flat road. Again, that’s pretty good considering the motor is 350 watts.

Hill Climb

The Oraimo Monster 100 is not the best e-bike when it comes to hill climbing. Going uphill wasn’t easy, especially on hills with over 20 degrees of incline (as the brand says it can handle up to 15 degrees). But it was still not too bad either, thanks to the bike’s 21 speed gears. Having so many gears sure helps the bike perform better on inclines. The RAEV Bullet GT is still the best at going up hills, and I haven’t found a bike that can beat it yet.


When I rode the Oraimo Monster 100 electric bike on a flat and smooth road, I reached a speed of 20mph in around 14 to 15 seconds. Not super fast, but good considering it’s a 350-watt hub ebike. In fact, it’s even impressive considering that the bike costs just $600. Once I hit 20mph, the bike moved at a steady pace and didn’t slow down much. If I had to compare how quickly the Oraimo Monster 100 accelerates to another ebike, I think it felt very similar to the Jasion EB5.


The Oraimo Monster 100 has a 36V 13Ah battery, packing 468 watt-hours of energy. When I tested the bike’s range, I was able to ride around 25.4 miles using both the throttle mode and the pedal-assist mode. The path I took was mostly flat, with a few parts that went uphill. Considering the budget-friendly cost of the e-bike, this range is pretty good. But if you’re looking for e-bikes that can go even farther, you can consider the Aniioki A8 Pro Max or the Bandit X-Trail Pro. Both these bikes have huge batteries that won’t run out easily.

Ride Quality

Even though the Monster 100 bike is affordable, the company cared about making it comfortable to ride. The Oraimo branded saddle was quite comfy, and you can even adjust it to fit different riders. Likewise, the handlebar is also adjustable. Since the bike is not heavy, it’s easy to steer and control. And even though the cadence sensor might not be super quick when it comes to detecting your pedal inputs, you really can’t complain about that due to the tag. Also, the front suspension worked quite well to make the ride smoother on bumpy and uneven roads.


The Oraimo Monster 100 e-bike has a front mechanical suspension fork, which makes it possible to ride on uneven paths. However, you cannot adjust the suspension on different kinds of roads. If you’re looking for a bike with dual or adjustable suspension, there are many choices. From the budget e-bikes that I’ve tested, I really liked the suspension on the Engwe Engine X.


The Oraimo Monster 100 electric bike has mechanical disc brakes. I haven’t tested the brakes yet, but I’m impressed with how well they work. Sure, hydraulic brakes are much better, but for the cost of this bike, having disc brakes is still not a bad deal… I mean many bikes in this price range have outdated rim or drum brakes (even Hurley still uses them).


While many budget ebikes have only 7 gears, the Oraimo Monster 100 electric bike stands out with a Shimano 21-speed transmission. This is a big deal… and undoubtedly the most significant highlight of this e-bike. The Monster 100 lets you smoothly switch the gears… and it lets you ride at cruising speeds without any ghost pedaling.

Oraimo Monster 100

See the Oraimo Monster 100

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Oraimo Monster 100


The Oraimo Monster 100 is a low-cost e-bike, and it’s available on sale for only $599 on Amazon. With this price, you’re getting 21-speed Shimano gears, a front suspension fork, knobby 26” tires, and a fast charging battery. The Monster 100 is definitely one of the top choices if you’re looking for an inexpensive e-bike.


The frame of the Oraimo Monster 100 is made from lightweight and strong aluminum alloy. The whole bike weighs just 48.5lbs  with the battery, and can hold up to 309lbs of weight, which is not bad. In terms of how it looks, the Monster 100 looks like a regular mountain bike and has a battery attached on the outside. The wires are also outside, but they are organized really well. You can select between 2 color options: white & black, and both look equally cool. If you’re looking for a good-looking bike without spending much money, you might want to look at this stylish ebike from Engwe.


The Oraimo Monster 100 has a 36V 13Ah Lithium-ion battery. It’s mounted on downtube and can be removed and locked. This mechanism is handy for people who want to charge the battery indoors. The battery comes with a 4A fast charger, and it takes just 3-4 hours to fully charge it. The battery has a button to turn it on or off, as well as a cover to keep the charging part clean from dust.


The display on the Oraimo Monster 100 bike is placed on the left side of the handlebar. It’s smooth and has a back-lit screen, so you can easily see things like your speed, how much battery is left, and what PAS mode you’re using. Whether you’re riding the bike during the night or on a sunny day, the screen is always easy to see.


The Oraimo Monster 100 e-bike does not come with front or rear lights to help the rider see in the dark. But, it does have reflectors in front and rear as well as on pedals and wheels. The bike also lacks fenders for protection against mud and water splashes.


Just like any American mountain ebike, the Oraimo Monster 100 uses knobby tires that are 26-inch in diameter and 2.1-inch in width. They’re not so big, so it might not be as easy to roll over obstacles as you can with 27.5” tires… but they are good at gripping the terrain, no matter what it’s like.


The Oraimo Monster 100 e-bike comes with a standard warranty for 12 months. This warranty covers the motor, battery, display, front fork, as well as other parts of the bike. Oraimo also offers a 30-day money back product guarantee. You can learn more about the brand’s warranty policy here.

Oraimo Monster 100 Alternatives

If you’re looking for more choices, here are two other options that are priced similarly to the Oraimo Monster 100 electric bike.

Oraimo Monster 100 vs Ancheer eMTB

The Ancheer electric mountain bike is better in terms of performance, thanks to its 500W hub motor. This can make it go a bit faster and perform better on hills than the Monster 100 electric bike, which has a 350W motor. However, the Monster 100 has a larger 468Wh battery, so it can go longer distances, about 25.4 miles per charge.

The Monster 100 is also a little heavier at 48.5lbs , but it can carry more weight, up to 309 pounds. This is good if you have to haul everyday stuff (you can always mount a rear rack). The Ancheer eMTB is lighter at 44 pounds and can carry up to 265 pounds. Both bikes have  Shimano 21 gears and 26-inch tires. However, Ancheer has a huge advantage when it comes to price!

Oraimo Monster 100 vs Jasion EB5

The Oraimo Monster 100 and the Jasion EB5 both have a 350W motor, which means they perform equally well on different types of terrains. The Monster 100 is a bit faster than the Jasion EB5. It goes up to 21.3mph while the EB5 goes up to 19.2 miles per hour. 

Also, the Monster 100 has a bigger battery, 468Wh, while the Jasion EB5 has a smaller 360 watt-hour battery. This means the Monster 100 can also go farther on each ride. Both bikes weigh almost the same (48.5lbs and 50lbs), but the Monster 100 can carry more weight. It’s also faster with its 21 gears compared to Jasion’s 7 gears. 

Let’s compare these three mountain e-bikes to understand more about what features they have. Otherwise, if you prefer a 27.5″ option, the Totguard 27.5″ mountain e-bike can be a great option.

Oraimo Monster 100 Ancheer eMTB Jasion EB5
Motor 350 W 500 W 350 W
Top Speed 21.3mph 21.9mph 19.2mph
Battery 468Wh 374Wh 360Wh
Range 25.4 miles 18.4 miles 19.5 miles
Weight 48.5lbs 44lbs 50lbs
Load Rating 309lbs 265lbs 265lbs
Transmission Shimano 21S Shimano 21S Shimano 7S
Price $599 $389 $399


Priced at $500, the Oraimo Monster 100 electric bike stands with its stylish build and impressive performance. The bike doesn’t cost much, but still works really well on urban roads…. and has great features, making it a good competitor in its group. What’s especially cool is that the bike has been equipped with a 21-speed Shimano transmission, which really gives it an edge over others.

The Monster 100 also comes with a front fork, dual disc brakes, and a fast charging battery. Sure, there are some cons too. For instance, the bike doesn’t have fenders and lights, and 350 watts are simply not good enough for off roading. But considering the price tag, the Monster 100 is still a great choice. If you want to buy this bike, you can find it on its Amazon page below. Also, if you want to see more choices, you can check out these top bikes under $2,000, under $1,000, or under $500.

Oraimo Monster 100 FAQs

Can the Oraimo Monster 100 e-bike fit tall riders?

The Oraimo Monster 100 e-bike has an adjustable saddle, which works well for riders who are between 4.95-5.7ft in height.

Is the Oraimo Monster 100 electric bike waterproof?

Yes, the Oraimo Monster 100 electric bike has an IPX4 rating, which makes it adequately resistant to water splashes. 

How heavy is the Monster 100 and how much weight can it carry?

The Oraimo Monster 100 has a frame made of aluminum alloy, making it weigh 48.5lbs. It can carry up to 309lbs, so it works well for most people.

What is the range of the Oraimo Monster 100 electric bike?

The Oraimo Monster 100 e-bike has a 468Wh battery. When I tested the bike, I could ride about 25.4 miles using both the throttle mode and the pedal-assist mode.

Oraimo Monster 100 Manufacturer's Specs

  • Motor: 350W (500W peak) Bafang hub motor 
  • Max Speed: 20mph 
  • No. of Assist Levels: 5
  • Battery: 36V 13Ah (468Wh)
  • Max Range: 28-35 Miles (Pure Electric Mode) / 28-45 Miles (Pedal Assist Mode)
  • Charger: 48V 4A Charger
  • Charging Time: 3-4 Hours 
  • Brakes: Dual Mechanical Disc Brakes 
  • Front Suspension: Mechanical 
  • Frame Material: Aluminum Alloy 
  • Bike Weight: 48.5lbs (with Battery)
  • Max Load: 309lbs 
  • Transmission: Shimano 21-speed 
  • Display: LED 
  • Tires: 26×2.1” Mountain
  • Rider Height: 4.95-5.7ft


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