Sunny Health & Fitness SF-4850SMART Recumbent Bike Review 

The Sunny Health & Fitness SF-4850SMART Recumbent Bike is just as good as the classic version because they pretty much have the same features and build.  

However, the SF-4850SMART has a Bluetooth feature for the SunnyFit app which avails an additional fun and immersible workout experience.  

Moreover, at the time of this review, this product had good user reviews on Amazon and fewer returns than average compared to similar products.  

Click right here to have a peek at the best price of the Sunny Health & Fitness SF-4850SMART Recumbent Bike. 

The Frame & Construction 

The Sunny Health & Fitness SF-4850SMART Recumbent Bike is designed for home use. It features a sturdy steel frame powder-coated with anti-rust paint for longevity.  

Other aesthetic and protective parts such as the seat base coverings, the drive system coverings, and the console casings are made of quality plastic.  

The bike is designed to support 300 lbs./136 maximum user weight capacity.  

Its overall assembled dimensions are 61.81’’ long by 25.98’’ wide by 47.24’’ high. Therefore, the workout area measurements it will require would be 5’ (157 cm) in length by 2’ (66 cm) in width. Also, an additional 2’ clearance should be considered on each side as recommended for a safe and convenient workout experience.  

Users can conveniently move the unit in and out of storage, even though it weighs 86.4 lbs./39 kg, via the lifting handle attached to the rear stabilizer and the integrated front-mounted transport wheels. 

There are also adjustable levelers at the rear base which allow users to stabilize the bike on a platform that might not be entirely even. Hence, with the well-designed base, you won’t experience wobbling moments at all.  

The unit’s step-thru design makes it possible for users, even those with joint issues, to easily mount and exit the bike without struggles.  

Recumbent bikes such as this provide effective low-impact cardiovascular workouts with lots of comfort. 

The Seat of the Sunny Health & Fitness SF-4850SMART Recumbent Bike 

The seat on this recumbent bike is comfortable. At least, this is the view of most users on Amazon.  

It has a wide and contoured surface that is padded as well. The dimensions are 12.5’’ long by 16.5’’ wide by 3.5’’ high.  

Its backrest is ventilated with a contoured design that can support the back comfortably through a prolonged workout session.  

It can be adjusted horizontally (fore/aft) only. However, whenever adjustment is made the height slightly increases or decreases because the base is slightly angled.  

You can adjust the seat while seated via the lever on the right side of it.  

A set of handlebars is attached to the seat so that users can have all the support they need during aggressive and intense pedaling. On each of the handles, heart rate sensors are integrated into them for reading and transmission of the user’s pulse rate (whenever they are grasped during a workout) to the LCD monitor. 

The Handlebar 

There is a set of handlebars at the front of the bike, they are static and nonadjustable just like the one on the seat.  

This handlebar is designed to offer an alternate workout position whenever the user wishes to. For instance, the seat handlebar is good for sit-back pedaling while the front handlebar is for a sit-up pedaling posture.  

Both handlebars are coated with a soft rubber foam material that offers lasting comfort and safety to the hands. In other words, there won’t be a need to use a pair of hand gloves when using the bike.  

Pedals  

The balance-weighted pedals are wide and textured with adjustable safety straps. They are made of mostly quality plastic material, and they have a metallic core.  

They can comfortably and securely accommodate different foot sizes.  

The pedals are attached to a strong crankset and crankarms.  

The Drive 

The SF-4850SMART Recumbent Bike has a belt drive system that provides smooth and quiet operation. This is because it comprises a pulley, anti-stretch belt, and a 6.6 lbs./3 kg perimeter weighted flywheel.  

Therefore, users can use the bike anywhere and anytime without disturbing those around them. 

Moreover, the drive system is maintenance-free as opposed to a chain drive system. No lubrication or adjustment will be required of you. Because of these advantages, users prefer the belt drive system over any other type of drive system.  

This drive is bidirectional; hence, it is possible to pedal in reverse if you want to.  

The Resistance 

The Sunny Health & Fitness SF-4850SMART Recumbent Bike is equipped with an electro-magnetic resistance system. This kind of resistance system usually has three main mechanical elements such as a small servo motor, a magnetic brake pad, and a flywheel.  

These elements are responsible for generating resistance without causing friction. This is unlike another type of resistance system that generates resistance by rubbing two elements together, but that is not the case here.  

This bike’s resistance system is electromagnetic; meaning it is powered by electricity and it generates resistance by the release of magnetic fields around the flywheel.  

Therefore, its resistance is clean and effective as well. No sound is made when resistance is engaged, and no part gets damaged over a period of time.  

So, it will suffice to say that the resistance system does not alter the bike’s smooth and quiet operation and it is also maintenance-free because no part wears out as a result of long-term usage.  

There are 16 adjustable levels of resistance that give users a range of workout challenges for weight loss, and improvement of heart and lungs health.  

The adjustment is done via the resistance buttons on the console. You can increase or decrease the resistance level by pressing any of the buttons on the console.  

Of course, the bike has preset workout programs; so, if any of these programs is selected a certain resistance level may apply automatically.  

The Console 

The console is Bluetooth-enabled and it’s compatible with SunnyFit App. In other words, it can connect to a smartphone/tablet device that has the SunnyFit App downloaded to it so that you can have access to over one thousand workout videos, or cycle with Sunny Health & Fitness trainers, tour the world with real location maps, monitor your workout progress in real-time, and more.  

The SunnyFit App is available for both Android and iOS-based smartphones.  

That said, the SunnyFit App is optional because it is not free. You may decide to subscribe to it if you want to.  

The console also features a bright and colored LCD monitor that tracks workout stats such as Time, Distance, Speed, Odometer, Watts, Program, Resistance Level, Calories, Heart Rate, Target Rate, and RPM with high readability that cannot be diminished no matter where it is being viewed.  

However, the display switches RPM, Odometer, and Watts interchangeably to Speed, Distance, and Calories, respectively.  

There are 24 built-in workout programs that include a manual program, 12 preset workout programs (P2-P13), Target Heart Rate Program, 4 Heart Rate Control Program (55%, 65%, 75%, and 85%), 4 User Programs, Watt Control Program, and Body Fat Program.    

These workout programs and the SunnyFit App (if subscribed to it) can go a long way to making your workout experience fun, productive, and immersible.  

There is a Recovery function that is designed to let users know how well their heart is recovering after a workout. This usually puts out a result of your heart recovery rate that is between F1 (Excellent) to F6 (Poor).  

Accessory 

The unit has a water bottle holder that enables you to keep water handy for hydration purposes. So that you can work out longer without interruption.  

A tablet holder is also a tablet holder built into the console. This is for the placement of a device or magazine during a workout.  

Storage

The Sunny Health & Fitness SF-4850SMART Recumbent Bike is not going to take up too much space and it can easily be moved around the room via the transport wheels at the front base.  

A storage area with measurements of 5’ (157 cm) in length by 2’ (66 cm) in width will be fine for it.  

Pros/Features Overview 

• Durable, stable, and portable; frame made of quality steel, and transport wheels are integrated 
• Sturdily built to support up to 300 lbs./136 kg maximum user weight capacity 
• Supports 29.9’’ to 39.4’’ inseam (the length of the inner thigh to the ankle) 
• Its operation is near-silent and smooth due to its belt drive system and the magnetic resistance system 
• It features an electromagnetic resistance system that provides 16 adjustable levels for a wide range of workout challenges for all users 
• The seat with a ventilated backrest is wide, contoured, padded, and 2-way adjustable  
• There are 2 sets of handlebars that are coated with anti-slip soft rubber foam material for secure and comfortable grips 
• The pedals are self-leveling, textured, and wide with adjustable safety straps that keep the foot secure and comfortable 
• There are 24 built-in workout programs that include a manual program, 12 preset workout programs (P2-P13), Target Heart Rate Program, 4 Heart Rate Control Program (55%, 65%, 75%, and 85%), 4 User Programs, Watt Control Program, and Body Fat Program 
• A Recovery function is included 
• Goal setting for Time, Distance, and Calories 
• EKG contact HR monitoring system 
• Easy to put the bike together (assembly) 
• Maintenance is daunting 
• A water bottle holder is included 
• A tablet holder is included 

Cons 

• The console is not telemetric (does not have wireless HR chest strap capability) 

Buy it Now at the Best Price on Amazon 

Warranty 

• Frame: 3 Years 
• Other Parts: 180 Days 

Product Dimensions & Specifications 

• Length: 61.81’’ 
• Width: 25.98’’ 
• Height: 47.24’’ 
• Shipping Dimension: 61.4’’ L x 10’’ W x 25.6’’ H 
• Net Weight: 86.4 lbs./37 kg 
• Gross Weight: 100.3 lbs./45.49 kg 
• Maximum User Weight Capacity: 300 lbs./136 kg 
• Supported Inseam: 29.9’’-39.4’’  
• Flywheel Weight: 6.6 lbs./3 kg 
• Frame: Steel 
• Drive: Belt 
• Resistance: Electromagnetic with 16 adjustable levels 
• Seat: 2-way adjustable, contoured, wide, padded, ventilated backrest 
• Handlebars: 2 sets (seat & front) 
• Pedals: Wide and textured with adjustable safety straps 
• Programs: 24 
• Monitor: Bright and colored LCD  
• Power: Electricity 
• Transport Wheels: Yes 
• Tablet Holder: Yes 
• Water Bottle Holder: Yes 

Shipping 

The Sunny Health & Fitness SF-4850SMART Recumbent Bike is shipped out in a box that weighs 100.3 lbs./45.49 kg with dimensions of 61.4’’ long by 10’’ wide by 25.6’’ H.  

If purchased from major vendors such as Amazon, the product is prepared and shipped out upon making an order, and the shipping and tracking details will be subsequently sent to you to enable you to know the transit progress and when it will arrive.  

Depending on the destination, it may take a couple of days to weeks for the product to arrive. However, if you want it to arrive without delay then you may have to opt for a premium shipping option that will incur an additional cost.  

Assembly 

To assemble a recumbent bike such as the Sunny Health & Fitness SF-4850SMART Recumbent Bike is not challenging.  

It only takes your time and willingness to use your hands. Read the included instruction manual and then use the tools that come with it for a successful assembly.  

That said, if you don’t wish to do any of that by yourself you may employ the help of someone to assemble it for you. This is usually done on the checkout page when ordering the product.  

Maintenance 

The Sunny Health & Fitness SF-4850SMART Recumbent Bike is not difficult to maintain.  

Make sure to carry out basic maintenance such as keeping it always clean. Keep an eye on the parts to ensure that they are always tight and in good condition.  

Your storage area must be clean, dry, and cool. Do not expose it to rain or sunlight. 

More information on maintenance is included in the owner’s manual. Take time to read it carefully.  

Conclusion 

The Sunny Health & Fitness SF-4850SMART Recumbent Bike is a decent exercise machine for home use. Its price tag is reasonable, and it is even cheaper than some other recumbent bikes of the same category.  

It supports 300 lbs./136 kg maximum user weight capacity; it is Bluetooth enabled and compatible with the SunnyFit app.  

There are 24 built-in workout programs which include 12 preset programs. Its colored LCD monitor tracks the user’s workout progress stats with enhanced clarity.