Sunny Health & Fitness SF-B1002 Indoor Cycling Bike Review

If you are looking for an entry-level exercise bike, and your prime concern is build quality, then you ought to learn about the Sunny Health & Fitness SF-B1002 indoor cycling bike. It may not have the most advanced features, but promises you safety, durability, and most importantly, greater comfort.

This article is an honest, detailed review of the Sunny Health & Fitness SF-B1002 exercise bike. We will be focusing on all major aspects, and will share with you both the pros and cons of the bike. 

So, read along, and learn all you need to know about this much respected stationary bike from sunny.

Sunny Health & Fitness SF-B1002 Indoor Bike Review 

While using the Sunny Health & Fitness SF-B1002, you will certainly have that feeling of extra comfort and stability than other budget indoor bikes. This can be attributed to three factors, namely:

  • Thickened heavy duty steel construction
  • 49 Ponds flywheel (yeah, you heard it right)
  • Ergonomic design

Thanks to such a thickened steel frame and the 49 Pounds heavy flywheel, this exercise bike also weighs a massive 113 Pounds in total. And that is way too a big number for an entry-level spin bike.

But why we still call the SF-B1002 an entry level bike is- apart from the brilliant build quality, it comes with pretty basic features. For example, it uses frictional resistance technology, differing from some other modern bikes that use magnetic resistance.

But the frictional resistance technique of this bike, however, is designed for user comfort and durability. For instance, the brake pad is made up of leather, instead of wool which most other budget spin bikes use. Leather is more durable than felted wool.

By combining the 49 pounds heavy flywheel and the durable leather brake pad, the bike offers you real-road biking experiences that you can adjust. 

Sunny Health & Fitness Indoor Cycling Exercise Bike with Heavy 49 LB Chrome Flywheel - SF-B1002

Hey there! We hope you love our fitness programs and the products we recommend. Just so you know, Dr Workout is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. It helps us keep the lights on. Thanks.


Additionally, this Sunny stationary bike uses a belt drive instead of the conventional chain drive. As a result, your spinning sessions will be even smoother and quieter. 

Now, if you are wondering whether the Sunny Health & Fitness SF-B1002 bike will suit your height or not, here is the answer- the bike has an inseam height range of 31/42 inches and a seat to handlebar distance range of 18/23 inches. Among these two, the inseam height is quite significant. 

Therefore, first of all, measure your inseam height, and compare it with the bike’s range before you make your buying decision. Your inseam height should come on/between 31 and 43 inches so that the bike will be comfortable for you. 

Another thing that you should keep in your mind is, this bike doesn’t have an inbuilt performance monitor. That means, if you are a fan of keeping live track of your indoor cycling stats, you will either have to buy one separately, or consider some other bikes. However, performance monitors are easily available in the market. 

That was a quick look at the overall features of this sunny bike. Read further for a detailed review of the bike from different key aspects. 

Features & Specs 

Before we proceed to the detailed review, here is a quick table of all key features and specifications of the Sunny Health & Fitness SF-B1002 spin bike. Have a quick look. 

Features & Specs


Sunny Health & Fitness






Alloy steel


54 x 19 x 44.5 inches

Weight Capacity

275 Pounds

Product Weight

113.4 Pounds


49 Pounds

Adjustable resistance


Type of resistance

Frictional resistance

Frictional brake pad material


Drive system

Belt drive

Pedal type

Caged pedals

Seat adjustability

4 way ( vertically and horizontally)

Handlebar adjustability

2 way (vertically)

Inseam height range

Maximum: 42 inches

Minimum: 31 inches

Seat to Handlebar distance

Maximum: 23 inches

Maximum: 18 inches

Water bottle holder


Performance monitor


Transportation Wheels



The moving wheels are made with the ultimate quality. So, moving the bike around would be an easy task for you. To do so, simply tilt the bike towards the front side using the handlebar, and move it around comfortably. 

Build Quality

As it should be already obvious to you, build quality is one of the greatest features of this exercise machine. Be it about the super-strong frame, those extra safe pedals, or the heavier flywheel, this spin bike will never disappoint you. 

Furthermore, as compared to the other budget exercise bikes, even the adjustment knobs of this exercise bike are of superior quality. 

Given below is where the Sunny Health & Fitness SF-B1002 indoor cycling bike stands in terms of the build quality of major components:


Like any other spin bike from sunny health & fitness, this SF-B1002 model also has a strong, durable frame. The frame is made of thicker steel tubes, thereby making the bike heavier than most other bikes.  

In total, the Sunny Health & Fitness SF-B1002 bike weighs a massive 113 pounds, the bulk portion of which comes from the heavy-duty steel frame. One notable advantage of such a stronger, heavier frame is that you feel a lot safer. 

Sunny Health & Fitness Indoor Cycling Exercise Bike with Heavy 49 LB Chrome Flywheel - SF-B1002

Flywheel and Resistance 

What puts the Sunny Health & Fitness SF-B1002 indoor cycling bike ahead of other entry-level spin bikes is the brilliant 49 Pounds flywheel. Usually, the flywheel of a budget indoor bike would hardly be more than 40 Pounds. So, the 49 Pounds flywheel is really a big thing. 

Such a heavier flywheel is what gives this indoor bike great momentum while you are cycling. As a result, you will have a lot more stability, also making it even safer.

Speaking of the resistance mechanism, this sunny bike comes with a leather brake pad. And compared to a felted wool pad, which most other budget spin bikes use, the leather pad is much more durable. 


Most likely, the pedals of the Sunny Health & Fitness SF-B1002 stationary bike are made of aluminum, which is basically what most indoor bikes use. One great advantage of aluminum is, it is strong and light in weight at the same time. 

Therefore, you will feel great comfort riding this bike even in the standing position, without worrying about safety. 

Additionally, the pedals are enclosed within pedal cages, keeping you safe from fast rides.  

Don’t miss:

Sunny Health & Fitness SF-B1805 Review
DMASUN Exercise Bike Review
Pooboo L-NOW D525 Review


The handlebars of this exercise bike are designed to suit various riding positions. Also, it is strong enough to withstand heavy, as well as fluctuating loads. 

The non-slip, friction handlebars of the bike, along with the foam layer at the top, make it comfortable to place your arms. 

Speaking of adjustability, you can adjust the handlebar in terms of its vertical height. However, it would have been even better if there was a facility to adjust the handlebar horizontally. 

Sunny Health & Fitness Indoor Cycling Exercise Bike with Heavy 49 LB Chrome Flywheel - SF-B1002


Compared to most other spin bikes, the seat of Sunny Health & Fitness SF-B1002 is much longer and narrower. Also, the cushion is of average thickness. 

Being frank, there is a possibility that you will have to do something with the seat to make it a bit more comfortable for longer spinning durations. Like, buying a new cushion cover. 

Speaking of adjustability, you can adjust the seat both vertically and horizontally. To do so, use the adjusting knobs given under the seat. The seat posts are strong and load-bearing. 

But a possible drawback is, you can’t go for micro-adjusting the seat height. -Because, the holes are placed farther compared to some other bikes.


Speaking of technology, we have mixed opinions about this bike. 

The major drawback of the Sunny Health & Fitness SF-B1002 exercise bike is that it does not have a live performance tracker. Usually, even entry-level bikes are equipped with such a performance monitor, although the features are pretty basic and moderately accurate. 

Given below is a detailed review of this indoor cycling bike in terms of the technology they’ve implemented for various components.

Sunny Health & Fitness Indoor Cycling Exercise Bike with Heavy 49 LB Chrome Flywheel - SF-B1002

Flywheel and Resistance

As we have already made it clear, the 49 Pounds Flywheel is perhaps the most notable component of the Sunny Health & Fitness SF-B1002 bike. In addition to offering great inertia while spinning, it combines with the leather brake pad to offer you adjustable resistance. 

Technically speaking, the bike uses frictional resistance. 

Here is how the resistance technology works- The friction between the brake pad and the flywheel is what creates resistance. You can also adjust the resistance using the knob given right in front of the seat. 

Turn the adjusting knob clockwise for greater resistance. And, in order to reduce the resistance, turn it anti-clockwise. Furthermore, to stop the bike almost instantaneously, press the knob down at once. 

Such a heavier flywheel will have a greater impact on the resistance adjustability. It will be more comfortable for you to adjust it, or to maintain the momentum. 

Belt Drive Mechanism

What made us hate those conventional metallic chain drives was, they created noise and demanded strict maintenance. 

This Sunny Health & Fitness indoor cycling bike, by using the advanced belt drive mechanism, eliminates these problems. You can enjoy smoother, quieter rides without compromising on the quality of your exercise. 

Don’t miss:

Joroto X1S Review
Joroto X2 Review
Cyclace Exercise Bike Review

Assembly and Maintenance

Assembling this bike should not be a concern for you. The package, upon reaching you, will have all key components well organized. 

After unboxing the package, grab the concise user manual where they give complete assembly instructions, and the toolbox. Then, simply start with assembling. 

Usually, assembling the Sunny Health & Fitness SF-B1002 indoor bike would take a maximum of 45 minutes. Although they offer extra expert assembly at some locations, we won’t recommend it to you, as it is an easy job that you can do by yourself. 

However, it would be better to have a helping hand, as the package can be heavier than normal. 

Now, coming to the maintenance part, you have to perform regular, but easier maintenance of the bike for safety and better product life. 

  • First of all, clean the bike’s frames and other metallic/non-metallic parts as frequently as possible, preferably after each use. It will be useful not only to get rid of dirt, but also to prevent your sweat from affecting the bike parts. 
  • Once a week, check whether all screws and connectors are intact. In case you find any damages, go for immediate replacement.
  • Before you start with spinning, make sure all key screws are well connected. Especially the screws of the pedal crank, seat post, and handlebar posts. This is crucial to ensure your safety.
  • Once a week, clean the leather pad surface and lubricate it. At the same interval, lubricate other key screws and tighteners as well.

That was a brief description of the maintenance you have to perform. Refer to the user manual for clearer instructions. 

Don’t miss:

Yosuda L-007A Review
Yosuda L-001A Review
Concept2 BikeErg Review

Aesthetics and Styling 

They have decided to keep the bike simple in looks. And in fact, we think that was appreciable. But we are not making any final judgments as concepts of aesthetics may vary from person to person.

The frame has a black color, along with the usual metallic coloring for the belt cage, and the posts for the seat and handlebar. 

But the flywheel has a red color, and thanks to its bigger diameter, the red color also looks predominant along with black. Besides the flywheel, the moving wheel and the adjusting knobs are also red in color. 

Additionally, the brand name ‘sunny’ is written in the frame once, in a very simple style. 

Sunny Health & Fitness Indoor Cycling Exercise Bike with Heavy 49 LB Chrome Flywheel - SF-B1002

Pros & Cons

As a summary of the above-discussed features, given below are some notable pros and cons with the Sunny Health & Fitness SF-B1002 indoor cycling bike. 


  • Brilliant 49 Pounds Flywheel
  • Strong frame
  • Durable construction
  • 42 inches maximum inseam length
  • Belt drive
  • Caged pedals
  • simple, but decent appearance


  • Minimum inseam height is 31 inches (a possible issue for shorter individuals)
  • No in-built performance monitor
  • Limited handlebar adjustability
  • Non micro-adjustable seat height


Is Sunny Health & Fitness SF-B1002 indoor bike Worth the Buy? 

If your priority is build quality and stability while spinning, then the Sunny Health & Fitness SF-B1002 indoor bike is definitely worth the buy. In fact, you would hardly find another bike at this price point with such a reliable construction. 

Another feature that should influence your decision is the inseam height range. The maximum inseam height of the bike is 42 inches, which suits taller individuals. The minimum inseam height, on the other hand, is 31 inches. That may cause a little trouble for shorter individuals.

However, a fact that you should keep in mind is, inseam height is different from your overall height, and it will not be fully accurate to judge this bike considering your height. 

Instead, measure your inseam height, and check whether it comes under the range mentioned above. 

Another thing you should keep in your mind is, this bike doesn’t have an in-built performance monitor. So, if you want to keep your live workout data, and don’t want to buy a tracker separately, you might have some other options. But then, you may miss out on the build quality at this price point.

To conclude, if the inseam height range can suit you, your weight is below 270 pounds, and you will be satisfied with basic features, then you can, or should definitely consider buying the Sunny Health & Fitness SF-B1002 bike.


That was a detailed review of this much-trusted spin bike from sunny. Overall, we are impressed with the built quality and similar features of the bike, just like thousands of people around the globe who have been using it for years.

Also, the performance monitor that most other entry-level spin bikes provide is mostly very basic, and hardly accurate. So, in that aspect, manufacturers of the bike have indeed been frank here. 

Finally, here is what we have to say- if you are looking for a reliable, long term fitness partner staying within your budget, then the Sunny Health & Fitness SF-B1002 exercise bike should really be on your wishlist.