Sunny Health & Fitness Magnetic Rear Belt Drive Indoor Cycling Bike, SF-B1709

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3yr, 180 day Manufacturer Warranty



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Last updated on August 11, 2022 7:35 pm
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Sunny Health & Fitness Magnetic Rear Belt Drive Indoor Cycling Bike, SF-B1709 Overview

Sunny Health & Fitness makes excellent quality fitness equipment to help you realize your fitness goals. This Sunny Health & Fitness indoor cycling bike is quite emblematic of the quality and reliability that you would expect from this brand. The SF-B1709 is a unique and nicely built spin bike. Customer ratings are, so far, largely positive.

Unlike other spin bikes that we have reviewed, it has an ultra-lightweight flywheel that enables you to spin at lighting fast speeds. As you will see, however, that lightweight flywheel isn’t a hindrance to its performance.  This spin bike has some extra tricks up its sleeves. Read on and find out.

It makes up for the very light flywheel, just 7lbs, with an adjustable magnetic resistance system that you can use to change the wheel’s magnetic field resistance to get a smoother and more responsive ride. Obviously, you get faster spins with this spin bike than with a traditional heavy flywheel spin bike. The faster spins, combined with the magnetic resistance field, create a variable centrifugal force that gives the smaller flywheel as much weightiness as you would get with the larger 30lb, 40lb, or 40lb flywheels.

Its belt-drive system gives you a super quiet and resilient performance. You won’t have to worry about this spin bike annoying neighbors or your housemates when you are taking it through its paces and ramping up the adrenaline.

The magnetic resistance is just sufficient to pose a real fitness challenge. Don’t underrate the small flywheel. You will have to be superhuman to peddle at ultra-high speeds with the magnetic field resistance set to the maximum value. The resistance level is quite impressive. This in spite of the fact this spin bike doesn’t entirely lock peddles in place for good stability. Besides, its smaller 7lb flywheel is easier to stop than a larger 50lbs flywheel.

The Sunny Health & Fitness SF-B1709 features a small multifunctional display that records and shows the fitness parameters including speed, average speed, cadence, max cadence, calories, distances, time, and race. It offers you a good detail of metrics and information on your biking sessions.

It scores highly on the looks department, too. This is a spin bike that is well made and which looks really good. It is a nice-looking piece of equipment for indoor cycling.

Product Features

Sunny Health & Fitness Magnetic Rear Belt Drive Indoor Cycling Bike with RPM Cadence Sensor - SF-B1709, Black

$599.00 $699.99 in stock
3 new from $599.00
Free shipping
Last update was on: August 11, 2022 7:35 pm

  • Sunny Health & Fitness Indoor Cycling Bike is built with a super-quiet magnetic belt resistance system for efficient shifts in the resistance. The belt drive is reliable and adds to the smooth performance of this spin bike.
  • Robust and multifunctional digital display captures lots of detail on your fitness regimen
  • A bottle holder for quick hydration
  • Its ergonomic pulse sensors give you the precision to perform your workouts according to your individual needs by transmitting your pulse rate to the digital display.
  • The seat and the handlebars are both adjustable with a good inseam range for a smoothly adaptable riding session.
  • A simple foot leveling system

Adjustable Magnetic Resistance

This Sunny Health & Fitness indoor cycling bike might have a small flywheel but it features a magnetic resistance system for a smooth and responsive riding session. The belt drive system is low-maintenance and stable. It gives you a largely noiseless riding experience that will not be a bother to those in close proximity.

Digital Display

The digital display may not be as advanced but it is multifunctional and records a large number of metrics including the speed, average speed, maximum speed, time, calories, and distance. It also has an RPM function (cadence sensor) for measuring the cadence.

4-Way Adjustable Handlebar

The 4-way adjustable handlebar allows you to customize the spin bike and do your workouts according to your specific requirements.

Caged/SPD Foot Pedals

The SF-B1709 has a caged or SPD-compatible foot pedals with which you can lock in to ride the momentum. Locking your feet in place not only protects them but also allows you to ride safely.

Transportation Wheels

You won’t strain or need any extra help to carry this spin bike from room to room. The transportation wheels allow you to effortlessly wheel it from room to room and transform these spaces into your personal fitness studios.


With its 7lb flywheel, this is a one-of-a-kind spin bike whose design is outside the standard mold of spin bike designs. Still, it gets the job done just like other spin bikes with heavier flywheels. The smaller flywheel means you don’t have to grapple with a clunky spin bike that will be a bit of a drag.

You can spin a lot faster. The smaller flywheel is also easier to stop than the heavier 40lb or 50lb flywheels. You won’t strain your knees trying to stop this spin bike.  It accelerates naturally and smoothly and it has the right amount of resistance.

You will also appreciate its up-to-date digital display that shows various kinds of fitness information including calories, time, distance, race, speed, average speed, maximum speed and even the cadence.

When buying the SF-B1709 spin bike, take note of its ultra-small flywheel. If you mind this, then you can go for the other spin bike options with heavier flywheels. It also has some unique extras such as the pulse sensor and its magnetic resistance system.

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Sunny Health & Fitness Magnetic Rear Belt Drive Indoor Cycling Bike, SF-B1709
Sunny Health & Fitness Magnetic Rear Belt Drive Indoor Cycling Bike, SF-B1709


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