Smooth 5.25 Treadmill

The Smooth 5.25 home treadmill with folding deck and patented swing arm suspension.

The Smooth 5.15 was one of the most popular treadmills ever made and the new Smooth 5.25 treadmill with many upgraded features is looking to exceed its predecessors popularity.

The team at Smoothfitness have taken the best features of the 5.15 treadmill and re-engineered them in innovative ways to make this model even better.

This is a folding treadmill and incorporates a “soft drop”, shock-assisted manual folding design that folds up and out of the way when you’re done.

The generous control panel/display indicates time, interval time, speed, distance, calories, incline, and program.

A key feature is the patented “Stability Extension System” which provides stability during even the most strenuous workouts coupled to an extra quiet belt and maintenance free deck.

The folding frame design helps to save space, especially if you’re in a condo or apartment.

Here are the main features:

Drive motor

This model utilizes a powerful 2.5 HP continuous motor. This is more powerful than its predecessor – the Smooth 5.25 and delivers maintenance-free service with a high horsepower output for runners or walkers.

Stable feel

Because of their light weight, discount treadmills often rock and sway during brisk walks or runs. With the heavy weight of this model, safety and stability are assured.

Shock absorption

The cushioning on this model is provided by a “swing arm” suspension system.

With “swing arm” technology the entire running deck and frame are suspended on two pivots. This will reduce harmful impact on your ankles, knees, hips and back and ensure that you enjoy the same silky smooth performance gym quality treadmills.

Some recent research has shown that as your front foot gets a soft landing, while launching your rear foot with a firm push-off. Pressure is relieved on the lower back, muscles and tendons.

There is also an added benefit in this type of cushioning – muscles contract at a lower peak intensity for a longer period of time, so they burn more calories.

Heart rate monitor

Repositioned hand grip pulse monitor – conveniently positioned at the front of the console, your hand grip pulse monitor is more comfortable to use.

Control console

The use of large buttons, well-organized panel and easy-to-read displays contribute to the ease of use of this model. Unlike some treadmills you have the ability to adjust preset programs on the fly. You can also quickly set (or reset) speed, incline, time or pulse rate while the treadmill is running.

The intuitive, interactive LCD console lets you monitor your speed, distance, calories, time and pulse simultaneously.

image 5.25 console

Workout programs

The key to staying motivated when using a treadmill and achieving your fitness goals is having a variety of preset programs, This model gives you seven to choose from.

Folding design

The treadmill has dual-stage, soft drop folding. This is in essence a gas shock-assist “soft drop” feature that makes folding the machine away after use a breeze. The facility allows you to fold and unfold the treadmill by gently tilting the deck into one of 15 positions. The treadmill can then be gently dropped back when it is time for use.

Warranty details

The Smooth 5.25 treadmill is backed with a lifetime warranty on the frame and motor. Additionally there is a 3 year warranty on all parts and 1 year of in-home service.


  • 7 Pre-set Programs
  • 8 User Data Memory Profiles
  • 5 Window LED Display
  • Textured Whisper Weave Low-Noise Belt
  • Commercial Grade Triple Laminated Deck
  • Push-Button Electronics
  • 1/4 Mile Track Display with Lap Counter
  • Hand Grip Speed Pulse Monitor
  • Shock Assisted Folding Mechanism
  • Uni-weld Steel Frame with Lifetime warranty


  • Motor: 2.5 CHP
  • Frame: Steel
  • Speed: 0.5 – 10 MPH
  • Incline: 15 levels
  • Belt size: 20″ x 52″
  • Folding: YES
  • Footprint: 73″ x 36″
  • Weight: 195 lbs
  • User weight: 275 lbs
  • Warranty: Frame (Lifetime)
  • Motor (Lifetime)
  • Parts (3 yrs)
  • Labor (1 yr )

NordicTrack T Series Treadmill + 30-Day iFIT Membership

$799.00  in stock
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as of May 22, 2024 7:03 pm
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  1. Reply
    russell k leinhart March 14, 2023 at 2:49 pm

    I know smooth fitness is out of business, therefore, no warranty will be honored. I only have 1 question: the belt on my smooth fitness 5.25 stopped just like that, no slowing down, just wham stopped. It does move when machine is off and I push it with my foot. What do you think the most likely reason for this is sincerely, Russ.

    • Hello Russ, I’m sorry to hear about the issue you’re experiencing with your Smooth Fitness 5.25 treadmill.

      Here are a few potential causes:

      1. Motor or Motor Controller Issue: The motor that drives the belt or its controller might have malfunctioned. This can cause the belt to stop suddenly without any warning signs.

      2. Belt Slippage: If the belt is slipping on the treadmill deck, it may stop abruptly. This can happen if the belt tension is too loose or if there is excessive friction between the belt and the deck.

      3. Electronic Failure: There could be an electrical issue with the treadmill’s control board or other electronic components, which may result in the belt stopping suddenly.

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