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NordicTrack GX 3.5 Sport Review

Quick Summary

Priced super-low for a limited time, the $399 GX 3.5 Sport is among the most affordable NordicTrack exercise bikes on the market.

It’s very adjustable, has pedals with toe cages and straps, and has a handy water bottle holder to help you power through training.

Read on for the full NordicTrack GX 3.5 Sport bike review with pros, cons and an alternative for those with bigger budgets.


Model NordicTrack
GX 3.5 Sport

Our custom rating considers all of the bike's features, specs, warranties, and 100's of user & expert reviews, to save you time!

List Price

Suggested retail price, typically higher than the price you'll pay with our recommended retailers.

Best Price

Since prices change daily, this link goes to our preferred retailer for the current best price. Note: MSRP stands for Manufacturer's Suggested Retail Price.


The flywheel in an exercise bike is what creates resistance. You can choose the level of resistance to increase your workout intensity.

Resistance Type

The type of resistance shows what kind of flywheel is being used (if any), and its weight if the manufacturer provides it.


Type refers to the style of the ride: Recumbent bikes allow you to lay back, while Upright bikes are more like road bikes (lean forward).

Indoor Cycle
Drive System

The bike's drive system is how your pedaling interacts with the rest of the bike (flywheel) to give you a good workout.

40 lb.

It's important to choose an exercise bike that will last, and the material of the frame determines how durable the bike is.

Welded Steel

The most important part for comfortability during your workout, the seat should be adjustable and have ample cushioning.

Padded & Adjustable

Pedals are the driving force for an exercise bike, and should be comfortable, adjustable, and easy to control without slipping.

Toe Cages & Straps

Bike Programs allow you to complete a workout with changing speeds and inclines, without changing anything manually.

Heart Rate

Heart Rate programs allow you to track how many times your heart is beating per minute (bpm), and some control the workout for you.


Display refers to the screen you'll look at to monitor workouts. LED and LCD displays are similar to TV screens.

Backlit LCD
Max. Weight

Max. User Weight is the amount of weight, in pounds (lbs), that the bike can safely support, which can represent durability.

250 lbs

Dimensions are included to help you figure out if this treadmill will fit properly (Length x Width x Height and Height x Depth).

49" L X 18.5" W X 39" H
Accessory Tray

Some bikes include an accessory tray for holding items such as water bottles, wallets, keys, or MP3 players like iPods.


Cooling Fans


Some exercise bikes can fold up and/or have wheels that make it easy to roll them around for convenience and to save space.


The warranty is a very important part of your investment. The longer the warranty, the longer you can get free/discounted repairs by the manufacturer.

Frame: 5 year
Parts: 90 days
Labor: 90 days

Rating: 83.25%

Our Rating

Rating: 83.25/100.  NordicTrack’s GX 3.5 Sport with chain drive is their entry level indoor cycle trainer. Its $399 online sale price (much more than the original $999 price) is an expected match for this bike’s short warranty. Still, it offers lots of power and a realistic sense of road biking. Highlights of the GX 3.5 Sport are a 40-pound flywheel, pedals with toe cages and straps, and good saddle adjustability to fit a wide range of rider sizes. Here are lists of pros and cons to consider.


  • 40-pound drive
  • Adjustable resistance
  • Adjustable saddle
  • Pedals with toe cages and straps
  • Welded steel frame
  • Water bottle holder
  • Transport wheels
  • Low price ($399 on sale)
  • Compact size (Footprint is 49″ x 18.5″)


  • No heart rate monitor
  • Uncomfortable seat
  • Slow customer service can be slow depending on what time of the year it is
  • Braking system is higher maintenance
  • Very short parts warranty (90 days)


The NordicTrack GX 3.5 Sport is very low-priced but has the heavy flywheel associated with more expensive indoor bikes. Its main selling points are the weighty flywheel, pedals with toe cages and straps, and adjustability to help anyone get the the right stride length.

Workout Programs

The GX 3.5 Sport, like many indoor cycle trainers, doesn’t have preset workouts. You can adjust the machine’s resistance with a knob as you ride along; the resistance system uses contact brakes with felt. Data shown on a small LCD monitor are time, speed and watts.

To get pro bike training sessions, you can park the GX 3.5 Sport in front of your TV or computer and use workout videos. The upgrade to the GX 3.5 Sport, the GX 5.5 Sport, has a CD with a video workout.

Indoor Cycle Features

To help keep you steady during intense cycling, this NordicTrack bike has pedals with toe cages and straps. It also has a saddle shaped like those on outdoor bikes. However, you might want to add a gel seat cover for better cushioning.

The 40-pound drive is competitive with that of other indoor cycles. (A 48-pound drive is used on most health club spin bikes and on the upgrade to this bike, the GX 5.5 Sport). Compared with many stationary bikes it supports an especially smooth ride.

The bike’s frame is welded steel and can support up to 250 pounds.

Staying hydrated is of course a key to endurance. The GX 3.5 Sport has an integrated water bottle holder that’s easy to access as you ride.

Warranty & Guarantee

The NordicTrack GX 3.5 Sport upright bike warranty is rather short. It includes:

– Frame: 5 years

– Parts: 90 days

– Labor: 90 days

NordicTrack also provides a 30-day money back guarantee.


This NordicTrack cycle trainer offers a low-budget way to get a realistic road biking experience indoors. It’s adjustable to fit most riders and meets a wide range of ability levels. Its best fit is a shopper who’s committed to spending $400 or less in the short term; the GX Sport 3.5 offers good basics but is a gamble considering its short parts and labor warranty.

It’s not easy to find a bike with long warranty at this price point. If you can afford to spend more, you can get much better value over the next few years. See the NordicTrack GX Sport 5.5 and other NordicTrack exercise bikes for comparison.

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