Product Overview
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300 lb Weight Capacity | 16-Adjustable Resistance Levels |
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Dual Weighted Flywheels | Shock Absorption Deck |
Set new fitness goals and break personal bests with the SF-T7723 Force Fitmill Treadmill by Sunny Health and Fitness. This heavy-duty fitness training device provides everything needed for a maximum intensity workout and improved muscular power. The self-powered treadmill stands at a fixed incline of 13.5% promoting a more fluid running motion. The high-density handrails support multi-grip functioning which encourages a versatile yet challenging cardio session. The slip-resistant rails also mimic sled training which allows you to place your shoulders and push against the tread to develop acceleration strength. Increase up to an incredible 16 levels of magnetic tension for a workout proven to increase your performance during both hilly and flat terrain running courses. Dual flywheel structure work together to create a more stable and smooth response for the user. The weight of both flywheels requires a higher energy demand from the user to get the belt started. This can cause a greater metabolic demand or more calories. This is increased when you increase the resistance levels.

Features
SAFETYSafety grip rails allow you to hop on and off when you need to start or stop your running workout.

16 MAGNETIC RESISTANCE LEVELS
Fixed Incline and 16 magnetic tension levels provide the opportunity for a full body cardio workout. Challenge your body with speed or with 16 levels of adjustable resistance and really push your performance to the next level.

DUAL STRUCTURE FLYWHEELS
Creates stable and smooth response for user. Weight of flywheels requires a higher energy demand from the user to get the belt started. Increases speed, power output, and tensions.

SOFT DROP SYSTEM
The soft-drop hydraulic mechanism on the Sunny treadmills is a great feature that allows the deck to gently lower itself to the floor. The soft drop hydraulic mechanism assures safe, hands free unfolding. No longer will you fear dropping your treadmills base on your precious floors. Fold your treadmill for storage and unfold your treadmill when it’s time to work out.

Transportation Wheels
Making the transformation of your home into your own personal fitness studio is effortless with these convenient transport wheels. Simply tilt and roll out for use or away for storage. ..no need for heavy lifting or muscle strain. The wheels at the front of the unit allow the user to move their unit around with ease, from room to room, or store it away out of sight.

AMPLE TREAD DECK
The manual treadmill measures at 59L x 27W x 55H inches with a max weight of 300 lb and 53L x 16W in running deck.

Foldable
Easy fold design locks and holds running deck upright, while built in soft drop technology slowly lowers deck to floor.

Specifications
TECHNOLOGY
Multi-grip handrailsManual tread deck
16 Resistance levels
13.5% Set incline
COMFORT
Soft-drop system53L x 16W in running deck
Foldable
Transportation wheels
ENGINEERING
300 lb Weight capacityMagnetic resistance
Dual Flywheels
Fixed incline
CONVENIENCE
Warranty: 3 year structural frame 180 days other parts and componentsProduct weight: 110 lb
Product dimensions: 59L x 27W x 55H in
Folded dimensions: 31L x 27W x 58H in
Ship weight: 126.5 lb
Ship dimensions: 65.9L x 30.8W x 14.6H in

FAQs
How do I get a copy of the owner's manual?The Product Manual may be downloaded above. If you have any questions, please feel free to contact our customer care team.
Can I fold the treadmill for storage?
Yes! The treadmill can be easily and safely folded and unfolded with the soft drop hydraulic mechanism, and moving the treadmill to storage from your workout space is made easy with the transportation wheels.
Does this treadmill require electricity?
No, the treadmill does not need to be plugged in and the treadmill belt is powered by the speed of the user.
What is the maximum weight the treadmill will support?
Feel confident on our durable design with a 300LB max user weight limit.
What is the benefit of using a manual treadmill?
Manual treadmills are great for high intensity workouts as your walking or running speed will apply the momentum to the flywheels.
How does the magnetic resistance work for my treadmill exercise?
The magnetic resistance applies resistance progressively to the flywheel making it more challenging to get the treadmill up to speed and burn more calories while conditioning your lower body further. There are 16 magnetic resistance levels available on this treadmill.
What is the incline on this treadmill?
This treadmill has a fixed incline at 13%.
Is this treadmill easy to assemble?
Yes! The assembly is simple and requires on a few easy steps. All tools required for assembly are included.
How do I keep my product in top working condition?
User manuals have recommended maintenance for your equipment. Manuals can be downloaded from our website on each product page, please search for your product to visit the product page.
How do I buy parts?
Contact our customer service team here for parts and technical assistance.
What is the warranty of my treadmill?
There is a 3-year warranty on the structural frame and 180-day warranty on other parts and components.

Due to national shipping delays, order delivery times may be impacted.
Please click here to read more about the NATIONWIDE SHIPPING DELAYS
Please contact us directly for an exact ETA of your delivery. Most of our products have a regular handling time between 3-5 business days Please allow 3-15 business days for delivery.
Freight Orders Include FREE Delivery Appointment.
Some of our heavier machines require more customization and are made-to-order in our supplier’s manufacturing plants in United States. Once completed, they are carefully
inspected at the Quality Center, after which they are shipped using freight shipping carriers.
We know that sometimes you have to wait a little longer to get your order but it's always worth it!
Please click here to read more about our Order Shipping & Delivery.
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Exchanges for damages: Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery. If your item(s) do arrived damaged, please send photos to info@barbellflex.com and we will process an insurance claim on your behalf. Be advised that most of our suppliers request you (the buyer) to pay for shipping the item back to them for inspection for damaged returns or replacements. In some cases, we are able to waive the fee, however this is at the discretion of our supplier and on a one-time courtesy basis. The time it takes for your exchanged product to reach you will largely vary on your location. Should the item you return be over $75, we strongly encourage you to use a trackable shipping service with signature or shipping insurance! Note that we will not be able to provide replacements/refunds without photos of the damage. |
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Returns & Refunds: All new products purchased through BarbellFlex.com include a 30 Day Return Guarantee. Refunds will only be issued to the original credit card that you use when placing your order. Please click here to read more about our Returns & Exchanges. |
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We Put Our Customers First! Customer experience is our #1 priority. We understand that these products are available on other websites and we are very appreciative that you chose to do business with us. As such, we pride ourselves in providing a superior concierge sales and shopping experience to all of our customers, via email, phone, social media and live chat.
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Returns are easy, simply contact us to request a return for your item and we will work with you to get the process going. We'll get you a replacement or refund in a snap! Please check our Returns & Exchanges tab for more info! |
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In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down. Our 100% Price Guarantee has some limitations. Please click here to read more about our Price Match Guarantee. |
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We thank you for your incredible service!. With gratitude, we partnered with GovX to offer a discount on our store to our military, their spouses & dependents, first responders, government employees and our wonderful teachers. Please click here to read more about our GovX ID Military Discount. |
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Ordering from Barbell Flex is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either. We invested time and money to ensure our backend system is secure and robust. We care about your information as much as you do! |
Product Overview
![]() |
![]() |
300 lb Weight Capacity | 16-Adjustable Resistance Levels |
![]() |
![]() |
Dual Weighted Flywheels | Shock Absorption Deck |
Set new fitness goals and break personal bests with the SF-T7723 Force Fitmill Treadmill by Sunny Health and Fitness. This heavy-duty fitness training device provides everything needed for a maximum intensity workout and improved muscular power. The self-powered treadmill stands at a fixed incline of 13.5% promoting a more fluid running motion. The high-density handrails support multi-grip functioning which encourages a versatile yet challenging cardio session. The slip-resistant rails also mimic sled training which allows you to place your shoulders and push against the tread to develop acceleration strength. Increase up to an incredible 16 levels of magnetic tension for a workout proven to increase your performance during both hilly and flat terrain running courses. Dual flywheel structure work together to create a more stable and smooth response for the user. The weight of both flywheels requires a higher energy demand from the user to get the belt started. This can cause a greater metabolic demand or more calories. This is increased when you increase the resistance levels.

Features
SAFETYSafety grip rails allow you to hop on and off when you need to start or stop your running workout.

16 MAGNETIC RESISTANCE LEVELS
Fixed Incline and 16 magnetic tension levels provide the opportunity for a full body cardio workout. Challenge your body with speed or with 16 levels of adjustable resistance and really push your performance to the next level.

DUAL STRUCTURE FLYWHEELS
Creates stable and smooth response for user. Weight of flywheels requires a higher energy demand from the user to get the belt started. Increases speed, power output, and tensions.

SOFT DROP SYSTEM
The soft-drop hydraulic mechanism on the Sunny treadmills is a great feature that allows the deck to gently lower itself to the floor. The soft drop hydraulic mechanism assures safe, hands free unfolding. No longer will you fear dropping your treadmills base on your precious floors. Fold your treadmill for storage and unfold your treadmill when it’s time to work out.

Transportation Wheels
Making the transformation of your home into your own personal fitness studio is effortless with these convenient transport wheels. Simply tilt and roll out for use or away for storage. ..no need for heavy lifting or muscle strain. The wheels at the front of the unit allow the user to move their unit around with ease, from room to room, or store it away out of sight.

AMPLE TREAD DECK
The manual treadmill measures at 59L x 27W x 55H inches with a max weight of 300 lb and 53L x 16W in running deck.

Foldable
Easy fold design locks and holds running deck upright, while built in soft drop technology slowly lowers deck to floor.

Specifications
TECHNOLOGY
Multi-grip handrailsManual tread deck
16 Resistance levels
13.5% Set incline
COMFORT
Soft-drop system53L x 16W in running deck
Foldable
Transportation wheels
ENGINEERING
300 lb Weight capacityMagnetic resistance
Dual Flywheels
Fixed incline
CONVENIENCE
Warranty: 3 year structural frame 180 days other parts and componentsProduct weight: 110 lb
Product dimensions: 59L x 27W x 55H in
Folded dimensions: 31L x 27W x 58H in
Ship weight: 126.5 lb
Ship dimensions: 65.9L x 30.8W x 14.6H in

FAQs
How do I get a copy of the owner's manual?The Product Manual may be downloaded above. If you have any questions, please feel free to contact our customer care team.
Can I fold the treadmill for storage?
Yes! The treadmill can be easily and safely folded and unfolded with the soft drop hydraulic mechanism, and moving the treadmill to storage from your workout space is made easy with the transportation wheels.
Does this treadmill require electricity?
No, the treadmill does not need to be plugged in and the treadmill belt is powered by the speed of the user.
What is the maximum weight the treadmill will support?
Feel confident on our durable design with a 300LB max user weight limit.
What is the benefit of using a manual treadmill?
Manual treadmills are great for high intensity workouts as your walking or running speed will apply the momentum to the flywheels.
How does the magnetic resistance work for my treadmill exercise?
The magnetic resistance applies resistance progressively to the flywheel making it more challenging to get the treadmill up to speed and burn more calories while conditioning your lower body further. There are 16 magnetic resistance levels available on this treadmill.
What is the incline on this treadmill?
This treadmill has a fixed incline at 13%.
Is this treadmill easy to assemble?
Yes! The assembly is simple and requires on a few easy steps. All tools required for assembly are included.
How do I keep my product in top working condition?
User manuals have recommended maintenance for your equipment. Manuals can be downloaded from our website on each product page, please search for your product to visit the product page.
How do I buy parts?
Contact our customer service team here for parts and technical assistance.
What is the warranty of my treadmill?
There is a 3-year warranty on the structural frame and 180-day warranty on other parts and components.

Due to national shipping delays, order delivery times may be impacted.
Please click here to read more about the NATIONWIDE SHIPPING DELAYS
Please contact us directly for an exact ETA of your delivery. Most of our products have a regular handling time between 3-5 business days Please allow 3-15 business days for delivery.
Freight Orders Include FREE Delivery Appointment.
Some of our heavier machines require more customization and are made-to-order in our supplier’s manufacturing plants in United States. Once completed, they are carefully
inspected at the Quality Center, after which they are shipped using freight shipping carriers.
We know that sometimes you have to wait a little longer to get your order but it's always worth it!
Please click here to read more about our Order Shipping & Delivery.
![]() |
Exchanges for damages: Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery. If your item(s) do arrived damaged, please send photos to info@barbellflex.com and we will process an insurance claim on your behalf. Be advised that most of our suppliers request you (the buyer) to pay for shipping the item back to them for inspection for damaged returns or replacements. In some cases, we are able to waive the fee, however this is at the discretion of our supplier and on a one-time courtesy basis. The time it takes for your exchanged product to reach you will largely vary on your location. Should the item you return be over $75, we strongly encourage you to use a trackable shipping service with signature or shipping insurance! Note that we will not be able to provide replacements/refunds without photos of the damage. |
|
![]() |
Returns & Refunds: All new products purchased through BarbellFlex.com include a 30 Day Return Guarantee. Refunds will only be issued to the original credit card that you use when placing your order. Please click here to read more about our Returns & Exchanges. |
![]() |
We Put Our Customers First! Customer experience is our #1 priority. We understand that these products are available on other websites and we are very appreciative that you chose to do business with us. As such, we pride ourselves in providing a superior concierge sales and shopping experience to all of our customers, via email, phone, social media and live chat.
|
|
![]() |
Returns are easy, simply contact us to request a return for your item and we will work with you to get the process going. We'll get you a replacement or refund in a snap! Please check our Returns & Exchanges tab for more info! |
|
![]() |
In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down. Our 100% Price Guarantee has some limitations. Please click here to read more about our Price Match Guarantee. |
|
![]() |
We thank you for your incredible service!. With gratitude, we partnered with GovX to offer a discount on our store to our military, their spouses & dependents, first responders, government employees and our wonderful teachers. Please click here to read more about our GovX ID Military Discount. |
|
![]() |
Ordering from Barbell Flex is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either. We invested time and money to ensure our backend system is secure and robust. We care about your information as much as you do! |