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SB Fitness Equipment

SB Fitness CT400 Self Generated Curved Treadmill

SB Fitness CT400 Self Generated Curved Treadmill

21 total reviews

Regular price $1,795.00 USD
Regular price $2,495.00 USD Sale price $1,795.00 USD
Sale Sold out

Named "Best Value Curved Treadmill" by Healthline, "Best Budget" Curved Treadmill by, "Best for At Home Walker" by RunToTheFinish, and "Best Budget" Curved Treadmill by Greatist.

Equipped with unique, shock absorbing flexible slats that reduce joint impact and discomfort.

Designed for HIIT Training, Interval Training, Short Distances and Walking. This treadmill is not recommended for long distance running or sprinting as the flexible slats increase the intensity of the workout.

Ultra-thin flexible slats offer maximum absorption, which makes the CT400 Curved treadmill light weight and promotes less stress on your joints and more muscle activation, resulting in higher intensity workouts.

The CT400 Self-Generated Curved Treadmill Requires NO ROUTINE MAINTENANCE

The CT400 Manual Magnetic Resistance Offers 3 Levels: Low-Medium-High


Advantages of a curved treadmill over a motorized treadmill:

  • 30% increased calorie burn
  • 100% energy efficient. Powered by the body's fat burning furnace
  • 30% Increased oxygen consumption
  • 16% Increased heart rate
  • 2.5% Increased cadence
  • Promotes better running form
  • More Muscle activation
  • Lower risk of injury
  • No maximum speed! Most treadmills max out at 12 - 13 MPH
  • Adjusts to speed changes immediately. Perfect for high intensity interval training
  • No expensive-to-replace electronics or motor that often fail after the warranty period ends.
  • Better reliability and longer service life



  • High-speed nylon bearings for smooth and quiet operation
  • Steel frame and handrails
  • Net Weight: 165 lbs.
  • Great for walking, running, or sports training
  • Super durable, ultra-thin slats (running track) rated for 150,000 miles and tested up to 450 lbs. The flexible slats offer maximum shock absorption
  • Assembled 73" L X 30.5" W X 61.6" H

Safety Features:

  • Start and stop controlled by the operator using curves located in front and rear of machine using gravity and magnetic resistance
  • High tension resistance setting assists in slowing movement down and stopping
  • Upward curve located at the rear of treadmill assists in stopping immediately
  • As operator slows speed, the track slows. As operator stops, track stops
  • Handrails assist in keeping balance, stability and stopping immediately

Treadmill Features:

  • Manual magnetic resistance: Low/Medium/High
  • Front digital display shows distance, speed, time, and calories
  • Set time and distance goals
  • Running Area: 18” X 60”
  • Built-in transport wheels and handle for easy transport
  • Adjustable leveling feet for perfect stability
  • No electricity required, can be used anywhere!
  • Innovative slats are rated for 150,000 miles

Manufacturer Warranty

***Residential Warranty***:
Frame: 10 years Frame (excludes handlebars)
Parts: 5 years (includes handlebars)
Console: 2 years console
Labor: 1 year

***Commercial Warranty***:
Frame: 5 years (excludes handlebars)
Parts: 3 years (includes handlebars)
Console: 2 years
Labor 1 year


The SB Fitness CT400 Self Generated Curved Treadmill ships via freight company, and will be delivered curbside with a scheduled delivery appointment.

Lead Time

In stock and typically ship within 48 business hours. 

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  • Free Shipping

    All items in store ship for free. Please see product details above for lead times and shipping method.

  • No Sales Tax

    Exludes shipping addresses in the state of Pennsylvania.

  • Financing Options Available

    We've partnered withBread Pay™to offer financing solutions to fit your needs and budget.

  • Satisfaction Guaranteed

    We're here for you to answer questions and listen to your concerns. If you are unsatisfied for any reason, we will make it right.

Customer Reviews

Based on 21 reviews
Rithy Renker
Good customer service and good quality treadmill

I love this treadmill. It is strong like a tank. Also customer service was very good.

Just a guy
Amazing machine and customer service

I have nothing bad to say... customer service is amazing!!! Machine is amazing... its so much easier walking, running or just moving on this self propelled treadmill. The best part, it doesn't need ANY power minus what you bring to the table... amazing all around.

Ryan Dunn
Honest Review

Fantastic machine for exercise! It definitely lived up to the hype.
Love the low impact of the slats!
GREAT machine.

2 things that need upgraded:

1) The monitor is too small and placed too far away for optimal viewing. Please consider a bigger monitor or a red/ black viewing screen?

2) This is minor, but a water bottle holder would be nice to have!


Treadmill runs great. Easy instructions and affordable.

Love hate relationship!

Wow, this treadmill really gets my heart rate going!! I have been working out/running for years and this is really kicking my butt, feels good to have this challenge. I have only tried this 3x for 15 minutes each time but I can only last running for 2 minutes and then have to switch to walking for 1 minute and keep alternating. It's tough but seems worth it and I know it will get easier as I keep at it. The only complaints I have is the no cup holder and the screen is so far away and no backlight so I actually can't see it while I'm running unless I shine a flashlight on it. So far, seems worth it for the price.