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True 550 ZTX CI Treadmill Review

True 550 ZTX CI Treadmill

True 550 ZTX CI Treadmill

The True 550 ZTX CI treadmill is the top of the line home treadmill from True Fitness.

Expect nothing but the best specs and features from this unit. And like other True treadmills, this machine provides arguably the best treadmill experience a user can have.

Is This Your Best Buy Treadmill?

If you want nothing but the best True model, then this is what you’re looking for. It is currently the biggest, strongest, and most feature rich home treadmill from True. But as expected, it is also the most expensive. And with a price tag of nearly $6,000, only a handful can afford buying this treadmill. If this machine is beyond your budget, I highly suggest you visit our best buy treadmills page and choose a quality machine that fits your budget.

Features and Benefits

This model boasts heart rate controlled (HRC) workouts. It has 5 custom time-based, 4 custom distance-based and 5 custom interval-based heart rate files to give you lots of flexibility in your HRC run. Other heart rate features include a Cruise Control program which allows you to jump from any preset or manual workouts into an HRC workout, and 6 Express Command Keys for simple access to any custom workout programs.

The True 550 ZTX CI treadmill comes with a 3.0HP continuous duty motor that serves up speeds of up to 12mph (this max speed is higher than what models from other True home series is offering) and inclines that reaches 15%. So it doesn’t matter whether you’re a beginner or advance runner, this machine can provide you the intensity you need.

The 22” x 60” running surface is the biggest currently being offered by True. It gives you lots of room to move and be comfortable during your workout. And, with its ortho belt feature, this unit could very well provide you the best treadmill experience you’ll ever have.

This machine also features 4 pre-programmed workouts (Weight Loss, Speed Interval, C/V Workout, Hill Interval) with 9 intensity levels each and 3 customizable programs to give you more variety and flexibility in your exercises.

The extra huge14 x 50 LED tri-color dot matrix display is the biggest console from True(and one of the biggest in the industry). It clearly shows you your heart rate, speed, distance, grade, time, pace, calories and Mets so you’ll always know the progress you’ve made.

The electronic S.O.F.T. select is another new feature from the True 550 ZTX CI treadmill. With it, you can customize the softness of your treadmill with a push of a button, to fit you more.

And finally, this unit comes with excellent warranty. Its drive motor and all of its parts are covered for 10 years… making this one of the best warranties in its price range. Other warranties include a lifetime for frames and 1 year for labor.


Just like other True HRC (heart rate controlled) models, the True 550 ZTX CI treadmill is also overpriced. And, it comes with some undesirable heart rate functionalities including limited console information during an HRC workout, and not being able to adjust the pre-set intensity of an HRC program.


I don’t recommend the True 550 ZTX CI treadmill. If you’re going to spend $6,000 for a treadmill, you’ll be better off buying a Woodway or one of our best buy treadmills.


Cost: $5,695

Motor: 3.0 HP continuous motor

Speed: 0 to 12 mph

User Weight Capacity: 400 lbs

Incline: 0 to 15%


  • lifetime on frames,
  • 10 years for motor and all other parts and
  • 1 year for labor.

Belt Size: 60”L x 22”W ortho belt

Foldable: No

Heart Rate: Yes

• 14 x 50 LED Tri-color Dot Matrix Console
• 16 Character Alpha Numeric Message Center
• True Touch Technology
• 4 preset programs with 9 levels of intensity
• 3 customizable programs
• Electronic S.O.F.T. Select
• 8 Express Command Keys
• Numeric Keypad
• 5 Heart Rate interval based workout
• 4 Heart Rate distance based workout
• 5 Heart Rate time based workout
• Cruise Control
• Polar Wireless Chest Strap included

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