SF-B901 Sunny Pro Indoor Cycling Bike Review

The SF-B901 Sunny Pro Indoor Cycling Bike is a popular entry-level exercise bike perfect for starting a spinning program in your home. While it doesn't offer the advanced features found on more expensive bikes, you get everything you need to spin your way to better fitness.

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The Good

Solid build quality at a competitive price

The SF-B901 Sunny Pro Indoor Cycling Bike rates among the more inexpensive indoor spinning bikes on the market. While it doesn’t deliver the kinds of bells and whistles found on more expensive models, it does offer high-quality steel construction with a heavy-duty chain-drive mechanism and a 40-pound flywheel designed to replicate the feel and smooth resistance you get with a real road bike. Although there are cheaper indoor cycling bikes out there, you’d be hard-pressed to find a substantially better deal for a bike of this quality. The SF-B901 Sunny Pro weighs in at 108 pounds fully assembled and has forward-mounted transport wheels for easy movement around the home. The bike is rated for users up to 275 pounds.

Terrific user reviews

The SF-B901 Sunny Pro Indoor Cycling Bike gets exceptionally high user reviews on a variety of shopping websites, including Amazon, Walmart, and Overstock, indicating just how satisfied buyers are with this model. Many reviewers mention the high value for money, the easy initial setup, and the sturdy construction as key reasons to buy this bike. A large majority of users give the bike four or five out of five stars and a strong recommendation to buy to anyone looking for a quality spinning bike at a good price. Although user reviews should make up only one part of your research, the widespread praise this bike enjoys is helpful in easing any doubts you might have about it.

Fully adjustable seat and handlebars

Unlike some cut-rate spinning bikes, the SF-B901 Sunny Pro bike is fully adjustable to match your height and your riding style. The seat has both forward-back and up-down adjustment knobs, which enable you to change and lock in the seat position in seconds. The handlebars also adjust up and down to help you achieve the most comfortable angle for your riding style.

The Bad

Relatively short warranty periods

While the SF-B901 Sunny Pro Indoor Cycling Bike has a strong reputation for quality construction, its warranty terms fall a little behind other popular bikes in the category. As the owner of a new SF-B901 Sunny Pro bike, you get a one-year warranty on the bike frame and a 90-day warranty on mechanical parts. There is no warranty coverage for labor. In comparison, a bike like the Horizon Fitness M4 Indoor Cycle, which in many ways is very similar to this Sunny Pro model, offers a 10-year frame warranty and a one-year parts and in-home labor warranty. If the peace of mind that comes with solid warranty protection is important to you, you may want to consider a spinning bike with better protections.

No workout display or preprogrammed workout routines

The SF-B901 Sunny Pro bike is built for spinning and it does so very well. However, you won’t find the kinds of performance tracking capabilities or automated workout programs common to more expensive indoor cycling models. The lack of even a basic cycling computer to track distance, speed, and workout time is probably the most notable disappointment among owners of the SF-B901 bike. That said, many spinning enthusiasts design their workouts around time intervals and don’t worry so much about mileage. If you don’t need a mileage readout, this bike remains a very good option.

The Details


  • Price: $599


  • Brakes: None
  • Electronics: N/A
  • Frame: 1 year
  • Labor: None
  • Parts: 90 days


  • Assembled Dimensions: 48.5"L x 20"W x 46.5"H
  • Assembled Weight: 108 lbs
  • Type: Upright
  • User Weight Capacity: 275 lbs


  • Drive System: Chain
  • Levels of Resistance: Infinite
  • Number of Workout Programs: N/A
  • Resistance System: Flywheel

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