Sunny SF-B2883 Upright Bike | Motorized Magnetic Resistance System

Ride into fitness on the Sunny SF-B2883 Upright Bike. Plugin the magnetic upright bike to control 16 levels of computer-controlled magnetic resistance through the console. Use the bike unplugged to exercise in manual mode. Designed for stability, this in-home cycling bike has a maximum user weight capacity of 240 lbs (109 kg).

This SF-B2883 upright magnetic bike comes equipped with 24 pre-installed workouts, based on resistance, heart rate, distance, and time. Customize your workout experience with four user programs. Use the built-in body fat software calculator to analyze your BMI to track how your body changes over time.

Tracking your progress on the Sunny SF-B2883 upright bike is simple with the digital monitor screen!  The backlit LCD tracks your speed, RPM, time, distance, calories burned, wattage, heart rate, and workout programs on one screen when you plug in the upright cycle bike to assist you in tracking all your fitness goals.

Measuring your pulse rate is an essential tool for exercising correctly and efficiently. Monitor and maintain your target heart rate by holding the integrated handlebar pulse sensors. This vital piece of health data will help you better understand your health and fitness status. The more steady and prolonged the elevated heart rate is during the workout, the more fat is burned.

Learn more in my complete review below

Sunny SF-B2883 Upright Bike
Sunny SF-B2883 Upright Bike

Product: Sunny SF-B2883 Upright Bike

Price: For a great deal on this bike, merely go here on Amazon

Warranty: Frame 3 years/Parts 180 days

My rating: 8/10

Amazon Affiliate Disclosure: I may earn commissions on purchases made through links in this post.

Details and Specifications

  • Assembled dimensions: 34L x 22.5W x 55.5H inches (86L x 57W x 141H cm)
  • Assembled weight: 60.85 lbs (27.6 kg)
  • Flywheel weight: 6.6 lbs (3 kg)
  • Weight capacity: 240 lbs (109 kg)
  • Seat: 4-way adjustable
  • Resistance: Motorized-magnetic, 16 levels
  • Console: 24 programs
  • Warranty: Frame 3 years / Parts 180 days

SF-B2883 Frame construction

Although the Sunny Health & Fitness SF-B2883 is an exercise bike made for home use, it features a durable steel frame with a weight capacity of 240 lbs (109 kg). It’s made of thick steel tubing, while ABS shields cover the base with all the drive and resistance elements.

Similar to other upright bikes in this feature range, the Sunny SF-B2883 has a small footprint. It takes approx. 34″L x 22.5″W (86 x 57 cm) of floor space, while the top of the handlebar reaches approx. 55.5″ (141 cm) above floor level. It is advisable, though, to leave at least two feet of clearance all around it for ease of access and unhindered usage.

The bike isn’t hefty either. It weighs approximately 60.8 lbs (27.6 kg). Therefore, it can be carried and assembled by only one person. Also, once fully assembled, relocation is via the front transport wheels.

Both base bars of the bike has a triangular shape for extra stability. The rear base comes with two adjustable stabilizers. Thus, you can quickly level it on any floor. The front base rests on two non-adjustable pads. Both back and front footpads are rubberized for extra floor protection.

All the metallic parts in the bike’s frame construction come with a corrosion-resistant paint finish. The color used is black, this being the only color available for this Sunny exercise bike (at least for the moment).

Sunny SF-B2883 Upright Bike

Seat and handlebars

The Sunny Health & Fitness SF-B2883 exercise bike comes with a classic saddle. Its top is slightly larger than the slim seats included with some spin bikes. It is approx. 12.5″ (31.75 cm) long, and 12″ (30.4 cm) wide, designed to provide an optimal contact surface. Also, its top is contoured for extra comfort.

The bike’s seat offers 4-way adjustability (front, back, up, down). Its upright post has several adjustment positions, and its horizontal slider also allows a few inches of front to back adjustment. The vertical post offers an adjustment span of approx. 9″ (22.8 cm), for users with an inseam between 26″ and 35″ (66 – 88.9 cm).

Thus, the bike should accommodate users up to 6’3 ″ (190 cm) with no problem, allowing a complete leg extension. Also, the bike has a maximum user weight capacity of 240 lbs (109 kg), which pretty much applies to the seat as well.

This Sunny exercise bike is equipped with a multi-grip handlebar, featuring two extended lateral grips curved at the top to provide close grip possibilities. The bike’s handlebar is non-adjustable. It attaches to the front upright bar via two bolts so you cannot adjust its angle. Also, the height of the front vertical bar is fixed and is not adjustable.

The handlebar is fully covered by a layer of rubber foam material to provide a secure grip. The side grips integrate metallic pulse sensors, so the bike’s console can monitor your heart rate if you hold on to them.

SF-B2883 Drive System

The Sunny SF-B2883 upright bike integrates a 6.6 lbs (3 kg) flywheel. It’s not as heavy as the flywheels of most indoor cycling bikes, so when a low-level tension setting is selected, the bike offers light resistance. But on the other hand, the wheel is perimeter-weighted, so it provides a bit of extra inertia.

The bike’s flywheel is bi-directional. Therefore, you can pedal in reverse if you want. However, coasting is not possible on it.

The bike features a durable crankset and a sizeable internal pulley. However, since it is an upright bike, it is intended only for seated workouts. Standing on the pedals is not recommended, as it may lead to damage to the internal components or the pedals.

Sunny SF-B2883 Upright Bike
Sunny SF-B2883 Upright Bike

The included pedals are ABS material with a metallic center. They have weight elements that enable them always to turn face-up if you remove your feet from them. They are also equipped with adjustable straps so you can correctly stabilize your feet on them.

Last but not least, this Sunny exercise bike features a belt transmission system. Therefore, you don’t have to worry about its lubrication. It also delivers a very smooth and quiet pedaling motion.

Resistance System

The Sunny Health & Fitness SF-B2883 exercise bike comes with a motorized magnetic resistance system. This means the bike needs to be connected to a power outlet. The resistance is only adjustable from the bike’s control unit. Also, depending on the program in use, the bike can auto-adjust the resistance.

The bike’s main resistance elements are a magnetic brake and a servo motor. When you adjust the resistance, or when the console automatically adjusts the resistance, the servo motor adjusts the position of the brake to the flywheel. This leads to more or less magnetic tension, and ultimately in an increased or decreased pedaling difficulty.

The bike offers 16 levels of resistance. The first few levels deliver a relatively light pedaling difficulty; they’re great for anyone who requires recovery training or has joint problems. Conversely, the top resistance levels provide considerably more pedal tension simulating a hill climb, promoting a higher burn and superior cardio training.

SF-B2883 Console

The bike features a mid-range console featuring an LCD with an LED backlight. It tracks all the important workout metrics, including time, distance, total distance, speed, RPM, watts, calories, and pulse.

For the pulse reading function, you must hold on to the sensors integrated into the handlebars. The console is not telemetric and cannot read your pulse through a wireless transmitter. Also, speed and distance are shown only in English units (MPH and miles); there is no metric units option.

Sunny SF-B2883 Upright Bike

The bike’s console does not have Bluetooth connectivity and is not compatible with any online fitness apps. However, it has 24 workout programs to keep you motivated. The list includes one manual program, 12 preset programs, a 1-watt program, 1 BMI program, 5 HRC programs, and four custom programs.

Plus, there is also a Recovery function that monitors how long it takes your pulse to return to normal parameters at the end of the workout, and based on that, it will give you a fitness rating between F1 (excellent) and F6 (poor).

The console also gives you the possibility to set a target for time, distance, and calories. When a goal for any of these metrics is selected, the display will show the remaining value until it reaches zero.

Last but not least, the console does not have an integrated sound system or a workout fan but does integrate a tablet holder. Also, its top section features a grid with the heart rate zones that you should aim for depending on your age, to benefit from a better aerobic output, fat burn, etc.

SF-B2883 Assembly and Maintenance

The main body of this Sunny exercise bike comes pre-assembled. You only have to add the two base bars, the console mast, the console, the seat post, the saddle, and the pedals. This shouldn’t take more than one hour. All the necessary tools for assembly are (included) with the bike. Also, the manual provides precise assembly instructions.

The bike’s maintenance doesn’t require much. You’ll need to remove the dust if it’s the case, keep liquids away from the console, and check for loose bolts and parts before each workout.


  • Fairly sturdy frame – can support users up to 240 lbs;

    Sunny SF-B2883 Upright Bike
  • Transport wheels on the front base;
  • Adjustable stabilizers on the rear base;
  • Multi-grip handlebar;
  • Pulse sensors incorporated into the side grips of the handlebar;
  • 4-way adjustable seat;
  • Perimeter-weighted flywheel for a steady pedaling motion;
  • Silent belt drive;
  • Zero friction eddy current resistance;
  • Power adapter included;
  • 16 resistance settings;
  • Weighted pedals with adjustable straps;
  • The mid-range console which tracks time, distance, total distance, RPM, watts, and pulse;
  • LED-backlit display;
  • 24 workout programs;
  • Recovery function;
  • Goal setting functions for time, distance, calories, and pulse;
  • Tablet holder included;
  • The bottle holder comes included;
  • Little maintenance required;
  • Easy to assemble;
  • Excellent warranty.


  • No online connectivity.

Sunny SF-B2883 Summary

The Sunny SF-B2883 is an upright bike designed for home use. It features an automatic magnetic resistance system with 16 tension levels and a console with 24 workout programs. It also has a 4-way adjustable seat which can accommodate users up to 6’3 ″ (190 cm).

It’s a great trainer for light to medium intensity cardio workouts, stamina development, muscle toning, and burning a few extra calories. In all, it offers excellent value for the price.

I hope you found this article helpful and informative. If you have anything that you’d like to share or any opinions about my website, please do speak up. I look forward to your comments, questions, and the sharing of ideas.

2 thoughts on “Sunny SF-B2883 Upright Bike | Motorized Magnetic Resistance System”

  1. Twenty-four workouts are impressive for an exercise bike. And 16 levels of resistance are good too. The price for the Sunny SF-B2883 is appealing. There are many bikes out there that cost much more with similar features, but because of branding, they go for much more. For me, this is a good price and you get a lot for your money.

  2. I think these are great, particularly in winter when you don’t want to go out in the cold and rain. That the only con is that you can’t connect it to the internet would be no problem for me. I’m also quite shocked by how light this is to others I’ve used before. That it has 16 levels of resistance is also quite impressive for the price. 


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