NordicTrack GX 4.5 Pro Exercise Bike

NordicTrack GX 4.5 Pro Exercise Bike - main image

Introduction to the NordicTrack GX 4.5 Pro Exercise Bike From The Classic Series Range

If you’re struggling to decide between different home exercise bikes, this post could be useful for you. This time I’ve been looking at the NordicTrack GX 4.5 Pro bike and have put together a detailed review so that you can decide whether it’s a good choice for your home.

With so many features to consider, it can quickly become daunting trying to narrow down your search for home fitness equipment, but hopefully, after reading through this post, you’ll be left with a better sense of whether the NordicTrack GX 4.5 Pro is the right bike for you.

To get started, I liked how it comes with a built-in tablet holder as I could keep myself entertained whilst working out. It’s also incredibly comfortable as a result of the soft, oversized cushion seat.

The display is large, which makes it easy to read your workout stats in real-time. Users have been liking how they can also keep themselves cool by using the built-in Autobreeze fan.

Want to discover more about what the GX 4.5 has to offer, check out the details below.

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  • Resistance – 25 digital resistance levels 
  • Flywheel – 9 KG flywheel 
  • Monitor – 5” LCD display that shows time, distance, speed, calories burned, and heart rate
  • Adjustable Seat – Horizontal & vertical seat adjustments are available
  • Pedals – Ergonomic design with adjustable toe straps 
  • Transport – Built-in transport wheels 
  • Max user weight- 125 KG
  • Product Dimensions – 117 cm x 63 cm x 168 cm 
  • Item weight – 47 KG



The GX 4.5 Pro exercise bike comes with a 9 KG flywheel which works incredibly well to provide you with sturdiness whilst cycling. This type of flywheel is ideal for beginners and intermediate cyclists. People who are looking for more intense workouts may prefer a heavier flywheel, however. 

I was impressed with how this flywheel functions smoothly. It allowed me to have a great cycling experience that felt natural. Moreover, the flywheel works quietly, too, which is a fantastic benefit when it comes to working out from home, meaning I was able to exercise with this bike from home without disturbing anyone. 

Digital Resistance 

With 25 levels of resistance to choose from, you can be sure to find the resistance that works best for your fitness level. Being able to choose between so many different resistance levels gives you more options when it comes to working out. It also means that this bike is a worthy choice to consider for both beginners and intermediate users. 

In addition to this, the resistance works quietly and smoothly, just like the flywheel. As a result, I felt confident being able to exercise from home without making a lot of noise. 

The resistance levels can also be changed digitally by using the buttons around the display. This made it incredibly easy for me to raise or lower the resistance levels whilst I was working out, rather than having to stop and start to change the resistance. 


The GX 4.5 exercise bike features a large 5” LCD display which I found to be easy to read. This meant that I could easily keep track of my speed, time, distance, calories, and heart rate.

Being able to keep track of so many workout statistics means that you can be given a good idea about where your current fitness levels are. You can then set goals that you want to achieve based on time, distance, speed, calories, and heart rate. 

For example, people who are interested in losing weight can look at the calories that are being burned. They can set goals each time they workout for a certain number of calories to burn and then simply start peddling away to reach those targets. 

This home exercise bike is also compatible with the iFit Coach app that’s available on smartphones and tablets. As a result, you can connect your phone to the app and be given more options when it comes to workouts, training, and being able to track your stats more accurately. It’s also compatible with Google Maps, which creates a revolutionary virtual reality experience for more captivating workouts.

The iFit app includes new workouts regularly, which means that you can always be sure to change it up and try something new. Moreover, there are personal trainers who can help to create a fitness routine tailored specifically for you. This is ideal for people who are unsure of where to start their fitness journey. It provides them with a more interactive workout so that they can sidestep workout monotony and stay motivated with daily workouts.

When you purchase the NordicTrack GX 4.5 Pro, you’re given a 30-day trial period for the iFit app. This enables you to try out the app and see if you think it’s worth keeping and paying for monthly.

Adjustability & Comfort 

I liked how the oversized seat that has been included with the GX 4.5 Pro comes with both horizontal and vertical adjustment options. This enabled me to have an easy time creating a cycling position that felt the most natural for me. 

Moreover, the pedals have been made with a wide design that allowed me to comfortably place my feet on them. They include a strap that’s adjustable, making it easy for me to secure my feet onto the pedals so that I felt supported whilst working out. 

Autobreeze Workout Fan & Entertainment

Users have been appreciating how the GX 4.5 Pro exercise bike comes with an Autobreeze fan. This fan works effectively to keep you cool whilst you work out so that you can have sweat-free sporting sessions (well, nearly maybe). I found this to be an especially useful benefit during my longer steady-state cardio workouts.

I was also pleased to find that the GX 4.5 Pro exercise bike features dual 2” speakers. As a result, you can connect your device via the MP3 input and listen to music whilst you work out. Not to mention, a tablet holder has also been built into this exercise bike.

This allowed me to watch movies and TV shows to keep myself entertained whilst I worked out. Those of you who are interested in using a home exercise bike for long steady-state cardio workouts will make great use of the tablet holder. 

Water Bottle Holder

I was glad to find that a water bottle holder has been included in the design of the GX 4.5 Pro. This made it super easy for me to keep myself hydrated whilst working out. 

It was useful during my longer workouts as I could conveniently stay hydrated due to how the bottle holder has been placed on the frame where it’s easy to reach. 


Heart rate sensor plates have been included in the design of the handlebars with the NordicTrack GX 4.5 Pro. Therefore, you can easily hold onto the sensors whilst you’re exercising to be given a reading of your heart rate in real-time.

This is an excellent benefit for people who are looking to aim for a specific elevated heart rate during their workouts. Moreover, the rubber materials that have been used for the handlebars are comfortable to hold onto and easy to grip so that you can keep yourself steady whilst cycling. 


The fixed design of the NordicTrack GX 4.5 Pro may be a downside for those who are tight on space and want a folding exercise bike. However, the GX 4.5 Pro features built-in wheels on the bottom, which mean that you can easily roll the bike around your home.

I found this to be beneficial for letting me move the bike into a space whilst I worked out. I could then roll it away into another room where it was out of the way. As a result, I was able to save space in my home, and I could move the entire bike on my own.



A lifetime warranty from NordicTrack equipment is available with the frame of their bikes. You can also benefit from a 1-year warranty for labour and 2 years warranty for parts. However, you should be aware that this warranty doesn’t cover the wear and tear that happens to parts over time. It only covers faulty or broken parts.

…and please note; the warranty registration must be completed within 28 days of the bike being delivered to your home.

In addition to this, you must be sure to follow the instructions that come with the NordicTrack GX 4.5 Pro exercise bike when you’re assembling it. This is because you may not be covered by the warranty if the bike has been put together incorrectly.

A 30-day-money-back guarantee is also included from the date that the bike is delivered. This provides you with some time to try out the bike and see whether it’s a good match for your workout needs. If not, you can simply return the exercise bike and receive a full refund.

*Warranty may be subject to change without notice and may differ between retailers – please check carefully before making a purchase.

Pros and Cons

  • 25 SMR silent magnetic resistance levels
  • Quiet & smooth flywheel
  • Comfortable oversized seat with lots of adjustment options
  • Compatible with the iFit technology for an expansive workout library
  • Google Maps compatible
  • Large easy-to-read monitor
  • Ergonomic pedals with adjustable foot straps
  • Heart-rate sensors built into the handlebars to automatically track your pulse
  • Water bottle holder included
  • Integrated tablet holder
  • Dual 2” speakers
  • Autobreeze workout fan for a sweat-free workout
  • Built-in transportation wheels
  • Assembly can take time

Overall Verdict:

The NordicTrack GX 4.5 Pro exercise bike is a superb choice for beginners and intermediates to consider. It’s packed with great workout features, such as 25 levels of resistance, an adjustable seat, built-in heart rate sensors, and large pedals. 

I liked how the digital resistance system is so quick and easy to use. This makes the bike a superb piece of innovative exercise equipment as you can change the difficulty of your workouts so quickly and easily. Moreover, the resistance system works smoothly and quietly, which are always great plus points when using a home exercise bike.

Being able to adjust the seat horizontally and vertically was useful for helping me to find the riding position that felt best for me. I also liked how the foot pedals have been made with a wide ergonomic design as it felt comfortable to cycle. The adjustable straps also provide you with total control over how tight you want to secure your feet to the pedals. 

The 5” display is large and easy to read, which ensures that you can easily keep track of all of your workout statistics. Not to mention, the iFit app compatibility is an additional benefit that you can use to get help from elite personal trainers and have access to an expansive workout library and personalized lifestyle coaching for a more interactive fitness journey.

This is a pro exercise bike that I can confidently recommend for beginner and intermediate cyclists who are looking for an interactive fitness journey with a home exercise bike that’s easy to use.

**This features on our “Best Exercise Bike for Garage Gym” here.

What I Liked About This Exercise Bike

The Autobreeze fan that has been integrated into the NordicTrack GX 4.5 Pro worked well to keep me cool whilst working out. I also liked how the GX 4.5 Pro comes with dual 2” speakers that allow you to connect your devices via the MP3 input. This enables you to keep yourself motivated with your favourite songs whilst you work out. 

And of course, the obvious things like the LCD display, iFit, Bluetooth which are all excellent features. The iFit elite personal trainers motivate you beyond what you’d ever achieve by yourself, taking an ordinary fitness routine to the next level on a daily basis!

Things That Could Have Been Better

Whilst I liked how the NordicTrack GX 4.5 Pro comes with a tablet holder, I found that the design and placement could have been better. The tablet holder is directly in front of the display, which made it difficult for me to access the controls whilst working out.


What’s the maximum weight limit of this exercise bike?

The NordicTrack GX 4.5 Pro has an impressive user weight capacity of 125 KG. 

Is the NordicTrack GX 4.5 Pro a good choice for short people?

Yes, the adjustability features available with the seat mean that you can change the height to position yourself comfortably for a great workout, regardless of your height.

Can you transport this exercise bike easily?

Yes, the NordicTrack GX 4.5 Pro comes with wheels that are built-in to the bottom. As a result, you can lift one end of the bike and roll it around your home easily.

Which are more advanced, adjustable treadmill cushioning systems or exercise bike cushioning systems?

There is no definitive answer to this question as it depends on the specific design of the treadmill and exercise bike in question. However, in general, treadmill cushioning systems tend to be more advanced as they need to be able to accommodate a wider range of user weights and speeds. Exercise bike cushioning systems are typically less complex as they don’t need to accommodate as much variation.

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