Sunny Health & Fitness SF-B1421 Indoor Cycling Bike Review

​Indoor cycling bikes allow you to enjoy your favorite workout even when the weather doesn't permit you to ride in the open. But these fitness bikes are not all created equal. Some models are simply better built, while others creak and wobble and fall apart before a year is up. Luckily, the Sunny Health & Fitness SF-B1421 Indoor Cycling Bike appears to be a machine's that’s of a higher caliber.

The SF-B1421 indoor cycling bike is an impressive low-priced, entry-level indoor cycling bike that offers you everything you need to achieve and maintain a good level of fitness from the comfort of your own home.

Whether you're new to indoor cycling or simply want an affordable yet effective exercise equipment for your home gym, this indoor bike would make an ideal buy.

Fully Adjustable Seat And Handlebar

When it comes to shopping for indoor bikes, two of the most important features to go for are an adjustable seat and handlebars. The SF-B1421 indoor cycling bike not only ensures you don't have to forgo these important must-have features, but also offers you the best in adjustable technology.

Both the bike's handlebar and seat are fully adjustable with the seat allowing up/down and for/aft adjustments. This simply means that the seat can be moved up and down as well as forward and backwards to provide the perfect fit for every user. Therefore, regardless of your height or size, you'll be able to achieve a comfortable, personalized fit with this indoor bike.

Heavy Fly Wheel

Another must-have indoor bicycle feature, which is offered by the SF-B1421 indoor bike, is a nice and heavy flywheel. Generally, the heavier the flywheel, the smoother the ride and the more stable the bike. At 30 pounds, this bike's flywheel is heavy enough to offer you the benefits of a solid feel. It also remains consistent even with long periods of cycling. In addition to that, the flywheel helps to replicate the forward momentum of a regular bicycle thus allowing you to enjoy the exhilarating feel of riding a bike outdoors.

Sunny Health & Fitness SF-B1421 Indoor Cycling Bike Review - Adjustable resistance knob for complete control on how intense you want your workouts to be

Adjustable resistance knob for complete control on how intense you want your workouts to be

Adjustable Resistance

With the SF-B1421 indoor bike, you'll be able to remain in complete control during each cycling session. This is thanks to the bike's easy to use adjustable resistance knob, which also features a press down braking system. With this adjustable resistance feature, you'll be able to pedal at the pace that delivers the best workout for you.

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Heavy-Duty Build

The SF-B1421 indoor bike features a heavy-duty crank and steel frame that provides the bike with several benefits. This heavy build enhances the bike's durability while promoting safety by intensifying the bikes stability. As such, this indoor cycling bike is designed to last. The solid build also helps to add on to the bike's versatility by enabling it to easily handle a wide range of weights.

Intuitive LCD Monitor

Sunny Health & Fitness designed their SF-B1421 indoor bike with an LCD display. The monitor is mounted at the front on the handlebars. With the display's location, you'll have a clear view of all of your workout stats (time, distance, scan, speed, and calories burned) as you exercise. The displayed information helps you keep your workouts effective yet safe enough to avoid injuries brought on by pushing your body beyond its limit.

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Sunny Health & Fitness SF-B1421 Indoor Cycling Bike Package Details

  • 1 x SF-B1421 indoor bike
  • User guide
  • Manufacturer's warranty
30 lbs. flywheel provides a sturdy and smooth ride to burn off those fats!

30 lbs. flywheel provides a sturdy and smooth ride to burn off those fats!


The SF-B1521 indoor cycling bike measures 42 x 35 x 9 inches and weighs 85 pounds.


  • Easy to move thanks to transport wheels
  • Has a bottle holder that's conveniently located within easy reach
  • Can easily accommodate weights up to 265 pounds
  • Provides a smooth, safe, and comfortable ride


  • Uses a chain drive system that needs to be oiled

Consumer Ratings

Amazon Customer Reviews: Click Here

The SF-B1421 indoor cycling bike from Sunny Health and Fitness is one of the newest products from the company. Considering the bike's great features and the company's experience in manufacturing top-quality exercise bikes, the SF-B1421 is sure to attract plenty of rave reviews once more people get wind of it.

Sunny Health & Fitness SF-B1421 Indoor Cycling Bike Price

Today's Price: Click Here


With its adjustable resistance, heart rate monitoring feature, customizable handles and seat, and solid build, the SF-B1421 indoor cycling bike enables you to workout from home without compromising on what you would get at the gym. In fact, some of the features of this indoor bike like the workout monitor and fully adjustable seat are usually found only in more expensive models. Therefore, regardless of your cycling needs, this indoor bike appears to be a value-for-money buy.

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