Sunny SF-B1002 Review | Is It Really Worth It?

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The Sunny Health & Fitness SF-B1002 Belt Drive Indoor Cycling Bike has a 49lbs flywheel and utilizes patented drive belt system technology. The SF-B1002 is priced at just under $400, and when you see the features that you get, it far exceeds your expectations.

The ride is super smooth and quiet primarily due to the 49lb flywheel, which also makes the riding experience incredibly realistic. The features don’t stop there, though, with fully adjustable handlebars and comfortable seat meaning users of any size and shape can find their best riding position. 

With the current COVID pandemic, it makes perfect sense to work out from home, and as you can see from the Sunny Health & Fitness SF-B1002 Belt Drive Indoor Cycling Bike, you don’t need to break the bank to get a challenging workout from the comfort of your very own home. 

Sunny HEalth SF-B1002 review

SF-B1002: What I liked & What Could Be Better

The most critical component of any stationary or exercise bike is not the seat, handlebars, or the seat. Rather it’s the flywheel and not only the quality of the flywheel but, more importantly, its weight.

The flywheel on the Sunny Health & Fitness SF-B1002 Belt Drive Indoor Cycling Bike weighs an impressive 49lbs. Now, you might be wondering why a heavy flywheel is so essential; well, it’s because the heavier the flywheel, the smoother and the quieter the riding experience is. The heavy flywheel also helps smooth out any jerky movements, which are pretty standard when riding indoor bikes.

If you take a hard look at other bikes from different brands in the same or similar price range, they can offer flywheels between the 25 and 30lbs range; so for Sunny Health and Fitness to offer users such a heavy flywheel shows just how much they care about their customers.

The heavy flywheel also helps keep the exercise bike stable and balanced, which is essential, especially when pushing hard on the pedals.

Things I liked:

  • Patented flywheel technology
  • MagnSuper heavy 49lb flywheel
  • 125 lbs bike weight helps stability
  • The Belt-drive resistance system is easy to maintain
  • Less than 30 minutes to assemble
  • Full adjustability for seats and handlebars
  • Can connect to Sunny Fit App if you buy the Sunny Cadence Sensor
  • Two wheels to help with transportation
  • Very affordable high-quality bike

Things To Consider:

  • No resistance level display
  • No digital console to track ride data
  • Unable to track heart rate data 

SF-B1002 Detailed Review

Sunny Health Bike with Heavy 49 LB Chrome Flywheel (SF-B1002)

The sturdy steel frame, heavy 49 lb weighted flywheel, and 275 lb maximum user weight give this bike a rock solid build that will keep it moving ride after ride.

Amazon Reviews


  • Sunny Bike Dimensions: 44L” x 20W” x 44H”
  • Sunny Bike Weight: 125 lbs
  • Adjustable handlebars/seat – Four-way adjustability
  • Maximum User Height: 6’2″
  • Resistance Type: Friction, Felt-pad
  • Foldable: No
  • Maximum Weight Capacity: 275 lbs
  • Flywheel: 49lbs & Solid steel frame
  • Transportation: Two-Wheels

Apps & Monitor

Resistance systems, heavy flywheels, and belt-drive systems are excellent features on any bike, but let’s be honest, we really want a state-of-the-art LCD monitor. Well, unfortunately, the Sunny SF-B1002 has to cut corners somewhere.

The bike has no screen, so that may be an instant deal-breaker for many potential users; however, consider this; many riders, myself included, use a separate app such as Zwift or Peloton. It’s easy to connect your tablet or phone to these third-party apps and get the most out of their platforms.

You can also purchase the SunnyFit app or buy the Sunny Cadence Sensor, which tracks your speed and RPMs. The SF-B1002 is a basic model bike without all the bells and whistles, but in my opinion, it’s all you need. Third-party apps are cheap at only about $10 per month, and it’s easy enough to place your phone on the handlebars or a nearby desk while riding.

Sunny Health 2-in-1 Cadence / RPM + Speed Sensor (CB100)

Sync to your phone, tablet, or other mobile devices through Bluetooth or ANT+ wireless connectivity technology. Track and view your data all in real-time by connecting it to the Sunny Health & Fitness APP.

Amazon Reviews Buy from Sunny Health


The Sunny Health & Fitness SF-B1002 Belt Drive Indoor Cycling Bike has an easy to twist knob that helps users find the perfect resistance for their workouts. The system itself is called “variable,” which means there’s no limit to the resistance you can dial in.

The most beneficial advantage of this type of resistance is that it allows users of any level to use the SF-B1002. Whether you’re a beginner or an experienced rider, it doesn’t matter; simply by turning the knob, you can find your resistance level. 

The resistance on the SF-B1002 is a felt pad which, if I’m being honest, isn’t as good as the more expensive magnetic systems. The felt pad isn’t as smooth as the magnetic system, and the felt pads need to be replaced, whereas the magnetic system is maintenance-free. 

Drive System & Flywheel

When it comes to the drive train systems on indoor exercise bikes, there are really only two types; chain or belt drive. The chain drive acts similar to a road bike, whereas the belt drive is a much newer and quieter system that also provides a smoother ride.

The chain drive system is perfect for outdoor bikes where the sound doesn’t matter, but for indoor bikes, the last thing you’re family members want to hear is a loud, clunky exercise bike for 45 minutes every day. 

The flywheel is by far the best component on the SF-B1002. Weighing in at 49lbs, the flywheel provides users with not only a smooth and quiet ride but a riding experience that is robust and gives the user confidence. Simply put, the flywheel alone is the reason you should purchase the Sunny SF-B1002.


Comfort is an essential factor in any piece of home gym equipment, particularly a stationary bike, which is you can spend long periods seated. The seat on the SF-B1002 is four-way adjustable, meaning you can move the seat up and down and back ad forward.

The seat is comfortable and manufactured with high-quality materials and thick under foam cushioning. Finding a seat that is fully adjustable and comfortable is a rare find for a bike at this price point. Many other brands with more expensive bikes only provide two-way adjustable seating, and the seats themselves are hard and uncomfortable. 


The Sunny Health & Fitness SF-B1002 Belt Drive Indoor Cycling Bike comes equipped with caged pedals and is not dual-purpose like some of the more expensive bike pedals in the Sunny Health and Fitness lineup. 

More experienced riders might find the caged pedals difficult to get used to because most like to use dedicated SPD cycling shoes, so these caged pedals could be a deal-breaker. That being said, they do provide a safe and stress-free riding experience which means there’s no real chance of slipping and injuring your foot. 


With a bike weight of 125 lbs, the SF-B1002 is a heavy beast, and many users, particularly more petite women, may have trouble moving the bike. However, the Sunny Health & Fitness SF-B1002 Belt Drive Indoor Cycling Bike comes equipped with two transportation wheels at the bottom of the frame, making the SF-B1002 very easy to move around. 


The seat on the Sunny SF-B1002 is adjustable four ways, which means you can sit forward and back and up and down. This might seem normal, but actually, most bikes in this price range only come with two-adjustable seating. 

The handlebars are also fully-adjustable, meaning people of every body type should be able to find the correct riding position. However, don’t forget that the maximum rider height for the Sunny Sf-B1002 is 188cm or 6’2.”


Do you like to assemble things? If you’re like most people, probably not, right? Well, with the Sunny SF-B1002, you won’t have to worry about it. The bike comes pre-assembled, although, to be clear, there are still some components that you will have to put together.

That being said, the instructions are straightforward, and assembling the SF-B1002 shouldn’t take any longer than between 35 and 40 minutes. All the tools you’ll need are included in the box, so there is no need to buy costly tools to assemble your bike


The Sunny Health and Fitness company has become one of the most well-known brands in the indoor cycling niche. The company manufacturers excellent high-quality and affordable bikes across all price ranges., but the most significant selling point for Sunny is their warranty.

Sunny offers all purchases a 3-year structural frame and 180 Days of other parts and components. This warranty provides the purchaser with a level of confidence unparalleled in the indoor bike niche.

Comparison with Other Alternatives

SF-B1002 vs SF-B1805

Sunny Health Magnetic Bike SF-B1805

Priced usually under $600, this model offers users an experience often reserved for higher-priced options. This quiet belt-driven model includes a heavier front flywheel weighing in at 44 pounds.

Amazon Reviews

The main differences between the SF-B1002 and the SF-B1805 are the magnetic resistance system and the device holder. The flywheel is solid, weighing in at 44lbs, and the pedals are caged just as they are on the SF-B1002. But you can’t go past the magnetic resistance system, in my opinion; it’s smoother and much quiet than the felt pad system on the SF -B1002. 

SF-B1002 vs SF-B1423

Sunny Indoor Cycling Bike (SF-B1423)

This stationary bike has a heavy-duty steel frame with bottle holder and press down braking system with adjustable resistance provide a safe, efficient, versatile indoor exercise cycling workout

Price & Reviews Buy from Sunny Health

The Sunny Health & Fitness SF-B1002 Belt Drive Indoor Cycling Bike and the SF-B1423 are very similar when you look at the styling and the design colors of the bike. However, the SF-B1423 does come with a small LCD console that enables you to track ride data such as time, distance, speed, and calories burned. Both bikes do have heavy flywheels, caged pedals, and transportation wheels for easy movement. 

SF-B1002 vs SF-B901

Sunny H&F SF-B901

The 40-pound chrome flywheel is designed to maintain momentum smoothly as you cycle on the cardio machine. Heavy flywheels support speed, stability, and consistency across your workout.

Use SAVE10 coupon code on Sunny Official Site for 10% OFF !!!

Amazon Reviews Buy from Sunny Health

The SF-B901 has a chain belt drive system as opposed to the SF-B1002, which utilizes a felt type pad. The chain drive system is the same as you would see on a regular road bike and can be pretty noisy and prone to maintenance costs for replacing components such as the chain and cogs. The SF-B1002, on the other hand, is much quieter and smoother thanks to the felt pad system; so if you have a family at home, the quieter SF-B1002 is better suited for you. 

SF-B1002 vs SF-B1995

Sunny Health Pro II Bike (SF-B1995)

Successor to the iconic and popular Sunny Health & Fitness Pro Indoor Stationary Cycle Bike. The Pro II comes equipped with even more features than the original. The smooth belt-drive mechanism ensures your cycle workout will be quiet, especially in shared spaces.

Amazon Reviews Buy from Sunny Health

The SF-B1995 comes with three main features that separate the bike from the SF-B1002. The SF-B1995 has an upgraded monitor which tracks. Time, distance, speed, RPM, and pulse. The pulse sensor sets the SF-B1995 apart from the SF-B1002, along with the device holder and the water bottle cage. The SF-1995 is the better option in my opinion and is $50,00 cheaper than the SF-B1002.

SF-B1002 vs SF-B901B

Are you looking for a good workout bike? Well, I think I may have found it. The Sunny Health & Fitness SF-B901B Belt Drive Indoor Cycling Bike comes fully equipped with multi-grip handlebars, adjustable seating, and a heavy-duty-steel-frame perfect for larger body-shaped users.

The SF-B1002 and the SF-B901B both have quiet belt-drive systems which provide a smooth and pleasant ride. In this case, the price is the most significant difference between the two bikes, with the SF-B1002 costing $399,98 and the F-B901B priced at $549,99.

SF-B1002 vs SF-B1509

The SF-B1509 comes equipped with dual-purpose pedals, making it the perfect exercise bike for more experienced riders who like to use their SPD cycling shoes. Dual-purpose pedals are also suitable for riders who like to switch between cycling shoes and regular sneakers. Both bikes utilize the felt-pad resistance system and have two wheels at the bottom of the frame, which makes transportation a breeze.


Sunny Health Bike with Heavy 49 LB Chrome Flywheel (SF-B1002)

The sturdy steel frame, heavy 49 lb weighted flywheel, and 275 lb maximum user weight give this bike a rock solid build that will keep it moving ride after ride.

Amazon Reviews

The Sunny Health & Fitness SF-B1002 Belt Drive Indoor Cycling Bike is one of the best bikes in the Sunny line-up. Years after year and model after model, these guys continue to impress the market with the quality of their bikes. 

The SF-B1002 has two primary features that set it apart, in my opinion; the belt drive system and the robust flywheel that weighs 49 lbs really do put this bike on a high pedestal. The riding experience is smooth and quiet, thanks to the patented drive system and flywheel mechanism; As a matter of fact, this is the perfect bike if you live in an apartment complex because you won’t disturb your neighbors.

Now, when you consider that you can burn nearly 800 calories in an hour, it makes perfect sense to spend your hard-earned cash on this excellent bike rather than paying for costly gym memberships. 

Last but not least, don’t forget that you can purchase the Sunny Cadence Sensor and sign up for the SunnyFit app and maximize your fitness and health potential. Last but not least, don’t forget that you can sign up for the SunnyFit app and maximize your fitness and health potential. So overall, the Sunny SF-B1002 is a great bike for the price, and to be honest, you’d be hard-pressed to find better value. 

Brenton Barker

Brenton holds a Degree in Sports Coaching from the University of Delaware and was the former Head Advisor for the Japanese Government's Sports Science Institute. Brenton currently consults with several Professional Athletes and clients in Self- Accountability, Health, and Goal Orientation.

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