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Sunny Health & Fitness SF-B0418 Magnetic Mini Exercise Bike Review

For those who are worried about potential health issues that may arise from their sedentary lifestyle, but cannot start a rigorous exercise routine due to lack of free time from work, here is good news. Sunny Health & Fitness has come up with the SF-B0418 Magnetic Mini Exercise Bike with a digital monitor and 8-level resistance.

As one can see, if the desk is high enough, the bike can be placed under the work desk and the user can exercise while working. It can also be placed on the desk to work arms and other upper body muscles. With a built-in handle, it can also be moved easily from place to place. Thus, users can use it while working at different locations in their home and office, and keep burning calories. Since its pedaling system is magnetic, it gives users a smooth and quiet ride. It takes a very small space as compared to other exercise machines and offers the user an activity that can prevent any health issues that may be caused by remaining deskbound.

Published: June 18, 2021.

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Specifications of Sunny Health & Fitness SF-B0418

- Dimensions: 22 x 18 x 14.7 inches (55.8 x 45.7 x 37.3 cm) (L x W x H)

- Weight: 21 lbs. (9.5 kg)

- Maximum user weight capacity: 220 lbs. (99.8 kg)

- Resistance: 8 levels, magnetic

- Warranty: 1 year on structural frame, 180 days on other parts and components

Features of Sunny Health & Fitness SF-B0418 Magnetic Mini Exercise Bike


Assembly of the Sunny Health & Fitness SF-B0418 Magnetic Mini Exercise Bike is not difficult. Users have to first attach the front and rear stabilizers to the main frame, and then connect the pedals onto the crank arms. That completes the assembly! It shouldn’t take more than 15-20 minutes. The user manual has all the assembly instructions and required tools and hardware are included.


The Sunny Health & Fitness SF-B0418 is made of steel and is designed to be sturdy. It comes in gray color and looks stylish.


This bike takes only a small space, since it measures only 22” in length, 18” in width, and 14.7” in height. However, the manufacturer recommends keeping a clearance of 2 feet (60 cm) on all sides of the mini bike while exercising for safe operation.

Compact Space-saving Design

Since the design of this bike is very compact, it doesn’t take a large space in the user’s house and can be easily stored in a small corner once the exercise is over.

Can be Moved Easily

The SF-B0418 Mini Exercise Bike has a built-in molded handle with which users can easily lift and carry the mini bike anywhere.


This bike weighs just over 20 lbs. plus it has textured rubber end caps. The weight and the rubber caps keep the mini bike stable on almost any surface, especially on carpet and rubber mat.

Maximum User Weight Capacity

As such, the SF-B0418 has a maximum user weight capacity of 220 lbs. but this is actually irrelevant as most of the users’ weight will be seated on a separate seat (Users can’t sit or stand on the machine).

Thus, the maximum user weight capacity is just a guideline about how much pressure the pedals could handle. This mini bike is not designed to be used while standing and thus it has no limitations regarding users’ weight.


The console of the SF-B0418 has a digital LCD screen to help users track their progress. It’s powered by 2 AA batteries (included) and starts when users start pedaling. It goes off automatically after 5 minutes of inactivity. It can even be turned on using the MODE button which is also meant for selecting one’s specification mode.

It tracks metrics including time elapsed, distance (displayed in miles per hour), current pedaling speed, RPM (rotations per minute), odometer (total accumulated distance), and calories burned. It also has a SCAN mode with which users can get all the metrics continuously repeated alternately so as to avoid missing any.

Thus users can get encouragement knowing the number of calories they can burn while sitting. It’s recommended to remove the batteries when the bike is not in use to save on battery life. Even if users are not interested in viewing the workout metrics, they can remove the batteries and simply pedal the bike.


The SF-B0418 offers 8 levels of resistance. The levels can be changed with a tension knob placed just below the console. By turning the knob clockwise, users can increase the resistance levels from 1 to 8 and reduce the same by turning the knob counterclockwise.

Magnetic Flywheel

Since the SF-B0418 has a magnetic flywheel, it not only has a sleek design but also works smoothly and quietly. Since one would need to use the mini bike in their office too, its quietness is its major plus point.

On the other hand, friction-tension wheels use pads for resistance. These pads wear out much faster than magnetic wheels. The other variant of resistance is torqued friction pads which also add some haziness to users’ levels. Finding the desired resistance by turning the knob is relatively easier for the user.

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Pedals of the SF-B0418 have been designed with dual usage in mind. Since the mini bike can be pedaled with both legs and arms, the pedals have been made grooved and comfortable for a smooth transition between upper and lower body exercises.

They have adjustable foot/handle straps. Hence the pedals can accommodate any size and keep hands/feet firmly stuck to the pedals to prevent slippage. Users should remember that this bike doesn’t allow reverse pedaling. Reverse pedaling will damage the bike.


The SF-B0418 is small-sized but is quite versatile. Users can pedal it with legs so as to work lower body muscles and also rotate the pedals with hands to work upper body muscles. Thus it can give a good workout to people having a sedentary lifestyle just while working sedentarily and protect them from the harmful consequences of the lifestyle.

Saves Exercise Time

Users don’t have to schedule a separate time for exercise on the SF-B0418 because this bike allows them to exercise while working. Thus users who have a busy schedule and complain that they don’t get time to exercise can easily exercise without having to schedule a separate time to do so.


The SF-B0418 is almost a no-maintenance bike because users just have to wipe it gently with a dry cloth after every use and check if there are any loose bolts and parts and tighten them as required.

Pros of Sunny Health & Fitness SF-B0418 Magnetic Mini Exercise Bike

- Compact space-saving design

- Versatile mini bike that offers lower as well as an upper-body workout

- Built-in molded handle to lift and move the bike anywhere

- Console with digital LCD display to track users’ progress

- 2 AA batteries for the console included

- 8 levels of resistance

- Magnetic flywheel that undergoes minimum wear and tear, and works smoothly and quietly

- Extra-large pedals designed for dual usage i.e. for feet and hands

- Adjustable straps on pedals allow them to accommodate any size and prevent slippage

- Users can use this bike while working or watching TV to burn extra calories - therefore no additional time needed for cardio workouts

- Easy assembly

- Easy maintenance

- Low-priced as compared to other similar bikes

Cons of Sunny Health & Fitness SF-B0418 Magnetic Mini Exercise Bike

- Has some construction quality issues

- Users have to switch chairs until they find one that wouldn’t cause their knees to hit against the underside of the table (manufacturer recommends using it while sitting on a sofa or chair without a desk)

- Can move while exercising (but placing it on a mat or carpet or against a wall solves this issue)

- May become noisy after a few months of use

- Not foldable (but it has a compact, space-saving design)

- No reverse pedaling

Bottom Line

sunny sf b0418 mThe Sunny Health & Fitness SF-B0418 Magnetic Mini Exercise Bike is a perfect exercise machine for those who are looking for exercise without having to take time from their busy schedule and can exercise while working at home or office.

It has some excellent features like a magnetic flywheel for a smooth and quiet ride, a digital LCD display to track users’ progress, and ergonomic pedals with adjustable foot straps. It’s stable, compact, smooth, quiet, portable, and versatile.

Users can get lower as well as upper body workouts with it anywhere they want. Since the mini bike can be placed under the desk, users can keep their workout discreet even in the office setting where they can’t drag a hefty full-frame spin bike.

This bike can help them being active, get low-impact cardio workouts, build stamina, burn calories and lose weight. Also, it’s obviously a great bike for those who are aged or disabled or are recovering from an injury or illness, and so, need recovery training. However, those who are looking for rigorous cycle training and can take time to exercise should consider full-size exercise bikes.

For more reviews and recommendations, feel free to check the Sunny Health & Fitness SF-B0418 Magnetic Mini Exercise Bike Amazon link (link opens in the new window).

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