e-Mazing Innovations bob Review

E Mazing Innovations Bob Electric Bike Review 1
Emazing Innovations Bob Review
E Mazing Innovations Bob Battery
Emazing Innovations Bob Folded
Pedal Assist And Twist Throttle
E Mazing Innovations Bob Chain
Front Hub Motor 250w
Folded Bob Ebike
E Mazing Innovations Bob Electric Bike Review 1
Emazing Innovations Bob Review
E Mazing Innovations Bob Battery
Emazing Innovations Bob Folded
Pedal Assist And Twist Throttle
E Mazing Innovations Bob Chain
Front Hub Motor 250w
Folded Bob Ebike


  • Ultra-compact, quick folding and extremely light weight - perfect for public transport or travel in RV or boat
  • Lower top speed of just 12 miles per hour and only one gear, this works alright given the smaller wheels
  • Non-standard parts like the small 12" wheels may be more difficult to find, replace and fix

Video Review



e-Mazing Innovations




$1,199 USD

Body Position:


Suggested Use:

Commuting, Travel, Urban

Electric Bike Class:

Throttle on Demand (Class 2)
Learn more about Ebike classes


United States

Model Year:


Bicycle Details

Total Weight:

35 lbs (15.87 kg)

Frame Material:

Aluminum Alloy

Frame Types:

Step-Thru, Folding

Frame Fork Details:


Gearing Details:

1 Single Speed


Aluminum Alloy and Plastic, Folding


No Rise

Brake Details:

Mechanical V-Brake in Front, Band Brake in Rear, Levers with Motor Cutoff


Wuxing Rubber Flat

Tire Brand:

Kenda, 12" x 2.125"

Wheel Sizes:

12 in (30.48cm)


Single Side Kickstand, Front and Rear Fenders, Plastic Chain Guide, Plastic Full Length Chain Guard


Removable Battery Pack, Maximum Load 220 lb

Electronic Details

Motor Brand:


Motor Type:

Front-Mounted Geared Hub
Learn more about Ebike motors

Motor Nominal Output:

180 watts

Motor Peak Output:

250 watts

Motor Torque:

30 Newton meters

Battery Brand:


Battery Voltage:

36 volts

Battery Amp Hours:

9 ah

Battery Watt Hours:

324 wh

Battery Chemistry:


Charge Time:

5 hours

Estimated Min Range:

20 miles (32 km)

Estimated Max Range:

30 miles (48 km)

Display Type:

LED Console


Battery Level

Drive Mode:

Cadence Sensing Pedal Assist, Twist Throttle

Top Speed:

15.5 mph (25 kph)

Written Review

The Battery-Operated Bicycle or “bob” by e-Mazing Innovations is one of the lightest and smallest electric bikes available anywhere. It features a unique “instant fold” design that lets you lift with one hand to automatically collapse the frame. Even though it’s only got one gear and a top electric-drive speed of ~15 miles per hour, this bike offers both pedal assist and throttle mode meaning you don’t actually have to pedal if you don’t want to. And that’s a huge benefit if you’re wearing nice pants, commuting to work.

The bob is a geeky bike no matter how you slice it. From the instant fold feature reminiscent of a Transformer toy to the company name itself “e-Mazing Innovations”. And while the feature set is rich, the design lacks the style and simplicity of a truly successful mainstream product. Would Apple ever release a bike like this? I don’t think so, it’s just complicated… but that’s not necessarily a deal killer. The awkward style, low top speed and complexity of features balance with portability, safety and convenience.

Most full sized electric bikes have a top speed of 20 miles per hour and that’s only due to legal restrictions. Some companies are starting to support higher top speeds when using pedal assist mode, but that’s not the norm. The bob, by comparison, cuts out electric assist at ~15 mph and that’s purely because the bike starts to get unstable. The small wheels and sliding frame supports just can’t take the vibrations and bumps without becoming jittery and producing “speed wobbles”. In pedal mode, this bike only has one speed so there truly is a physical limit on how fast it can go.

The 220 lb passenger weight limit is also worth considering, but it’s not as limiting as you might think. This bike isn’t meant for hauling, clearly, but it can haul larger riders effectively because the diameter of the 12″ wheels is much smaller and thus offers more torque in conjunction with the standard 250 watt motor. In general, this bikes is more efficient to ride than walking but you’ll have to pedal along to get up steep and even medium sized inclines. It’s simple to carry onto a bus or train and is less expensive than a lot of other ebikes so it does it’s job well. The bob is a niche product for sure but it’s well designed and fairly durable as I’ve known people who owned and used it for over two years with no major problems.

In terms of electric drive, the bob runs off of a lightweight long-lasting Lithium ion battery pack that’s removable. It offers 36 volts of power and 9 amp hours of range which is quite good for such a small bike. The front hub motor is smallis at 250 watts but for its size the motor is very capable. The pedal assist and twist throttle hardware works very well and is standard kit, the same parts that many Currie bikes use. When pulled, the brakes cut power to the system as one would expect. The front v-brake works especially well but I’m not as big a fan of the rear drum brake. Considering the lightweight frame, it works well enough.

Outside of the electric components on the bob, I love the addition of fenders for staying clean and dry. Also, the kickstand works well and the wires are all kept out of the way even though they aren’t fully integrated into the frame. Overall this bike delivers something special at a decent price. Because it uses non-standard parts however and is so compact, servicing may be more difficult. It’s a good choice for someone with limited space or a short gap in their commute on public transportation. It’s not the fastest ride but it is well thought out and much more efficient than walking. It’s also surprisingly comfortable.


  • Removable 36 volt lithium ion battery pack
  • Very light weight, can be lifted by most people with just one hand
  • Compact when folded, designed with quality parts that will last through many fold/unfold cycles
  • Offers both pedal assist and twist and go “throttle” modes
  • Great fenders and chain protector, keep pants clean
  • Nice little kickstand, stays out of the way
  • Relatively affordable for such a feature-rich bike
  • Several color choices to match your style


  • Only one gear, hard to go faster than 15 miles per hour
  • V-brake on front wheel with less powerful drum brake on rear
  • Harder to find non-standard parts for repair
  • Looks a little geeky vs. full sized folding ebikes
  • Hard to find in local shops, mostly sold online


Comments (9) YouTube Comments

Peter Piper
5 years ago

Folding this bike is not worth the trouble since it is quite a task and it doesn’t get much smaller than it is when it’s unfolded.

Court Rye
5 years ago

Good feedback Peter, have you owned or seen one in person? I reviewed this thing so long ago… I just remember thinking it was interesting.

4 years ago

I have this bicycle and the fold is quick and easy, just grab the seat stem at the bottom and pull up on the padded handle. 2 easy steps and it clicks into the folded position. When folded it is less than half the length of the extended bike and it’s the same height and width. Rolls and stands on it’s own when folded. The one that I have has disk brakes front and rear and standard 12.5″ x 2 1/4″ tires. You can find replacement tubes and tires everywhere.

4 years ago

Fantastic, thanks for sharing these tips Jaynh. I’m glad the bike has been working well for you. Do you ride it for fun, commute, or maybe something else? It’s such an interesting little contraption :)

3 years ago

In case the battery wears out or throttle or electronics malfunction, is there any company to contact for replacement parts? Does E-Mazing Innovations sell parts? I can’t find any contact info whatsoever on this company.

3 years ago

Hi Marcus! I reviewed this product so long ago… I’m not sure they still sell or support it. I don’t know much about the company and think that you’re taking a good approach here by going slow and cautious. If you do find one, maybe you can get it for a lower price since there isn’t much support on offer. Otherwise, it might be prudent to purchase a different product from a company that is still engaged. Again, I’m just guessing on the situation here, I never met anyone from the company.

3 years ago

Had this problem. Battery died and I needed a replacement. The only solution I found was to order from manufacturer for 450$.

3 years ago

I bought 2 at an RV SHOW in 2017–it’s been great except I cant find parts anywhere, right now I need a new throttle for one and a new battery. We bought “flex freedom” apparently assembled in Canada and sold by a dealer from sarasota; Paul has closed his doors I have no where to turn and I’m told this is the number one problem with most Chinese made bikes. Was thinking of buying a 3rd bike for parts but not after reading this review site. Also… this bike has too many parts… over-engineered!

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