Horizon Fitness M4 Indoor Cycle Review

The Horizon Fitness M4 Indoor Cycle is a terrific in-home indoor cycling bike suitable for both beginning riders and outdoor cycling enthusiasts alike. While it lacks a couple popular technological features, its relatively low sticker price makes it a good value-for-money choice.

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The Good

Very affordable for an indoor cycle

While indoor cycles are generally more expensive than traditional upright and recumbent exercise bikes, the Horizon Fitness M4 Indoor Cycle is an exception. With a suggested retail price below $500, this model is very affordable for the category, situated in the same price range as many popular upright and recumbent bikes. In comparison, the popular Keiser M3 Indoor Cycle, one of the top bikes in the indoor cycling category, sells for a suggested retail price around $1,700, much more than even some of the best traditional exercise bikes on the market. If you’re looking to begin an indoor cycling program in your home, the Horizon Fitness M4 is a terrific bike built to deliver years of indoor riding at a reasonable price, making it an excellent option for all kinds of buyers.

Solid warranty terms

The M4 Indoor Cycle comes with a 10-year frame warranty and a one-year warranty on parts and labor. The frame warranty compares very well against many competing indoor cycles and traditional exercise bikes at both similar and higher price levels. Although exercise bikes with 20-year frame warranties are out there, they are not very common and none of them are proper indoor cycles. The one-year parts and labor warranty is decent, but not especially notable since equal or better parts warranties are pretty common, especially among indoor cycles. That said, when you consider the relatively low price of the M4 Indoor Cycle, the warranty looks much more attractive than it might if it came with a more expensive model.

Comprehensive shipping options available

Horizon Fitness offers several different shipping options to deliver the help you need to get your bike properly and safely assembled. The Horizon Fitness M4 Indoor Cycle weighs in at 88 pounds. Although lighter weight than many other indoor cycles, the weight can still present a challenge when it comes time for assembly. If you plan to deal with assembly yourself, standard Bronze-class shipping delivers an unassembled bike to your front door or garage at no extra cost beyond the price of the bike itself. If you need help getting the packages into your home, the Silver shipping plan includes delivery of the packages to any room within two floors of ground level. This service costs $100. The Gold shipping plan takes care of everything for you. The bike is delivered, assembled, tested, and placed in a room of your choice. What’s more, all the packaging is removed from the premises. This option costs $225. While the Silver and Gold plans aren’t cheap, it’s nice to have these options available in addition to the free Bronze-class shipping.

Replaceable pedals

The M4 Indoor Cycle is equipped with quality pedals and toe clips that work just fine for most users. However, if you have a favorite pedal setup, it’s relatively easy to remove the preinstalled pedals and reinstall your own set. The M4 Indoor Cycle is built for standard 9/16″ pedals available from all major pedal manufacturers. This should be especially appealing to outdoor cycling enthusiasts who are looking for an indoor cycle to stay in shape during the poor-weather months. Install the pedals you use on your outdoor cycle and you won’t have to get used to a new pedal system.

The Bad

No cadence tracking

While the Horizon Fitness M4 Indoor Cycle is equipped with a cycling computer to track workout statistics such as time, speed, distance, and calories burned, the device does not track your cadence, or pedal rotations per minute. Cadence is a useful indicator for many types of cycling workouts and is vital to workouts that focus on developing pedal speed. If you’re a competitive cyclist or otherwise have reason to need a cadence monitor, you’ll need to purchase, install, and calibrate a third-party sensor and monitor system yourself.

Missing a heart rate monitor

The Horizon Fitness M4 Indoor Cycle is one of the few top indoor cycling bikes to lack any integrated heart rate monitoring capabilities. Many competing cycles are equipped with contact sensors in the handlebars to measure your heartbeat directly. Other cycles are equipped with a wireless receiver for Polar-compatible wireless heart rate monitors, which deliver very accurate heart rate monitoring to help you stay in your targeted heart rate zones and maximize your workout effort. While it would certainly be nice to see a heart rate monitor in this Horizon Fitness model, it’s not a terrible omission as you can always purchase an inexpensive third-party heart rate monitor to wear on your body as you cycle.

The Details


  • Price: $499.99


  • Brakes: None
  • Electronics: None
  • Frame: 10 years
  • Labor: 1 year
  • Parts: 1 year


  • Assembled Dimensions: 43"L x 19"W x 35"H
  • Assembled Weight: 88 lbs
  • Type: Cycling
  • User Weight Capacity: 285 lbs


  • Drive System: Chain
  • Levels of Resistance: Infinite
  • Number of Workout Programs: None
  • Resistance System: Direct Tension

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