Sunny Health & Fitness Pro Indoor Cycling Bike SF-B901 Review

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Sunny Health & Fitness Pro Indoor Cycling bike review


Sturdiness, assembly, flywheel, price


No computer


This professional-quality bike allows you to have a smooth ride. It is well-built and ready for thousands upon thousands of miles.

Our Rating



If so, you may want to get the Sunny Health & Fitness SF-B901 Pro Indoor Cycling Bike. 

For the ambitious indoor cyclist on a budget, this no-frills, robust bike does the job and gives a great workout. It's like the bikes in class, but you never have to leave our home to get a great workout.

Unlike the others, the Sunny bike is as simple as they come. It can support up to 275 pounds (the least of all the bikes we tested), and its ugly gray steel frame with red accents looks antiquated, like something a parent could buy in a John Hughes film. The bike is powered by mechanical resistance and does not have a digital display, thus it does not require electricity to operate.

Some are upright, while others are recumbent, and yet others are a mix of the two. Indoor cycle trainers with heavy flywheels are also available from Sunny Health and Fitness (40 pounds and up). The Sunny Mini Cycle, a bring-your-own-chair pedaling machine, is their most unusual cycling device.

The drivetrain (the mechanism that connects the wheel and pedals) of the Sunny bike comes in two variations: chain drive and belt drive.

 The chain is less priced and seems to have a larger following. The Sunny Health & Fitness Indoor Cycling Trainer Exercise Bike with Heavy 49 LB Chrome Flywheel is a no-frills bike that gets the job done and gives a good workout to the motivated indoor cyclist or the beginner who wants to see if they like having an indoor cycling bike without spending a lot of money.

It's a spin-style bike, like other popular at-home cycles like Peloton, Soulcycle, Echelon, and Schwinn, with a small seat, pedals positioned directly beneath the feet, handlebars that encourage the user to lean forward, and a knob between the handlebars that you turn to adjust resistance.

It's important that any bike you choose fits in your home wherever you intend to cycle. Measure the area you will use, then compare it to this bike's stats:

  • 20-inch width
    0-inch width
  • 46.5-inch height
  • 48.5-inch depth

Furthermore, be sure that this bike has the right dimensions for your body. The maximum weight for the Sunny Health & Fitness SF-B901 is 275 pound. Users should have an inseam between 41 and 28.5 inches. Be sure to take your measurements before ordering.

If this seems like an excellent fit for you so far, take a look at this bike's features. It comes with the basics you need, and without the bells and whistles that you can live without.

Features Overview

The Sunny Health & Fitness SF-B901 is much like the bikes you find in spin classes. 

The most important features include:

  • Smooth Flywheel
  • Adjustable Resistance
  • Adjustable Handlebars
  • Comfortable Seat
  • More

Each of these features works together to create a bike that looks and feels professional. Read on to get a further explanation of the features, as well as a look at the pros and cons.

Smooth Flywheel

The flywheel system is an important part of any exercise bike.

The heavier the flywheel, the smoother your ride will be. With a 40-pound flywheel, the Sunny Health & Fitness SF-B901 gives you an unusually smooth ride.

Sunny Health & Fitness SF-B901 Break System Review

Furthermore, this type of flywheel makes it more comfortable to go for long distances. That's what makes this bike great for experienced and long-distance cyclists. This flywheel system makes jerky movements and those out-of-control feelings things of the past.

Adjustable Resistance

Throughout your ride or from workout to workout, you will probably want to adjust the resistance on your bike. This bike makes the switch easy with a tension and resistance knob. Turn it left for more resistance and right for less. Find the level that's right for you right now.

Below the resistance knob is a push stop tab. This feature is vital for safety. You can push it anytime you feel the need to stop immediately.

Adjustable Handlebars

Posture is incredibly important with indoor cycling, so you have to be sure to get the right settings before you pedal. Both the seat and the handlebars on this bike adjust to give you the perfect workout every time.

Sunny Health & Fitness also designed the handles to be ergonomic for easy holding. You can even prop up your tablet on the designated area to read a book or watch a movie while you pedal.

Comfortable Seat

The seat on this bike is fully adjustable to help you find the right position for your workout. You can move it forward and back, as well as up and down. However, the adjustable nature of the seat isn't the only thing that makes it comfortable.

Sunny Health & Fitness SF-B901 Seat Review

The seat on this bike is padded to give you extra support where you need it most. It's covered with leather as well. It's an excellent seat for long rides and endurance workouts.


The drivetrain on this bike is smooth and reliable.

Furthermore, the crank system is built to endure even the most robust workouts. It's a solidly built bike that you can rely on time and time again.

Sunny Health Fitness knows that not everyone has a dedicated space for an indoor bike. That's why this bike comes equipped with transport wheels that make it easy to move. It also comes with a 90-day warranty to make sure you love your bike.

So, how do all of these features come together in real life? Let's take a look at what works with this bike and what we don't like.

Set-up Process

It took approximately 30 minutes to set up this Sunny Health & Fitness bike, and it wasn't too tough. The primary frame of the bike was already assembled, and the wheel was already attached.

The front and back stabilizers (parts that keep the bike in place), pedals, handlebars, and seat were all that was left to do. The assembly instructions included illustrations as well as thorough directions, which aided in moving the process along swiftly. Even if the instructions don't say so, it's best to get the help of another person when putting it together.

It's a fairly hefty bike, weighing about 100 pounds, and a few steps during building necessitate the lifting of the main unit.

What We Like

To get a variety of perspectives, we looked at qualified reviews to find what people love about this machine. With more than 2,000 reviews, this bike has a 4.2-star rating out of five on Amazon.

The first reason it has earned its high rating is the bike's sturdiness.

Sunny's bikes are highlighted with pink, crimson, and other bright hues, moving away from black or all-gray.

Many reviewers note that it is well-built. Unlike some bargain brands, the Sunny Health & Fitness SF-B901 looks and feels like it is meant to last. As the weight of the wheels is under 100 pounds it makes the wheels lighter and increases the durability of the wheels.

Sunny bikes is ideal for studio apartment and other cramped living quarter. The Sunny Folding Recumbent Bike, for example, maybe folded for storage and transportation.

Better yet, this bike has proven to last for cyclists who ride thousands of miles per year and pedal vigorously. Even larger users find that this bike takes anything they throw at them.

Other users note that the assembly of this bike was incredibly easy. The instructions are clear, and it was simple to put together.

The 40-pound flywheel is fantastic, especially at the roughly $$$ price point. Many more expensive bikes don't have flywheels that good. For the money, it's hard to beat the quality of ride this bike provides.

Sunny Health & Fitness SF-B901 Review

What We Don’t Like

As great as the SF-B901 is, it's not without its downsides.

First, and perhaps most obvious, is its lack of any computerization. This bike doesn't track any of your data. However, some cyclists appreciate the simplicity.

If you're going to use wearables and apps to track your fitness, you may not mind the lack of computer on this bike.

Another downside is that it does require some minimum maintenance. Like other bikes of this kind, you need to regularly oil the machine to keep it running properly. You may also need to replace the felt pads from time to time.

Even when resistance is mechanical rather than magnetic, few consumer comment that this brand's bikes are noisy. The Sunny Indoor Cycling Bike is a good example of a silent Sunny bike with magnetic resistance. It features a flywheel that weighs 26 pounds. There are no warranties included with the purchase.

Some Sunny Health & Fitness bikes lack screen. Others, such as the Sunny Folding Recumbent Bike, display only the most basic information: time, speed, distance, and calorie. Several also show heart rate, but the readouts aren't medically trustworthy because the data comes from a hand grip.

Finally, some users found that the bike was loud. This noise can be a problem is you want to enjoy your favorite movie without headphones while you cycle.

Is the Sunny bike a good investment?

A Sunny cycle is a good option if you don't want to spend Peloton money on something you're not sure you'll use much, or if you want to start a fitness program with few bells and whistles.

It won't give you the same immersive experience as connected bikes (even if you ride in front of a TV or prop up a tablet), and it has a few flaws that might put some people off. However, if you don't expect it to perform as well as more expensive bikes and don't mind doing some little maintenance, the Sunny bike could be a terrific choice.


With the Sunny Health & Fitness SF-B901, you don't have to leave your home to get a great spin in. Sunny Health & Fitness Pro is a pleasure.

We expected bad quality because of the low costs and lack of warranties, but these bikes show that Sunny is correct: they import from the best manufacturer.

This brand would become more competitive if they began including handy programming consoles on their bikes. To order this bike visit Sunny's website or Amazon.

If you don't mind the lack of electronics, this might be a great bike for you.

Order yours today to get started on your bike soon.

Last update on 2022-04-23 / Affiliate links / Images from Amazon Product Advertising API


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