Osaki OS-4000LS Massage Chair Black On sale!

Osaki OS-4000LS Massage Chair

4.9230769230769 out of 5 based on 13 customer ratings
(13 customer reviews)

+3 Year Standard Warranty
Regularly $3,099

Enjoy complete relaxation as the brand-new Osaki OS-4000LS Massage Chair’s ultra long 42 inch roller track massages your neck, back and buttocks. With the chair’s space saving design, you can recline the chair at your favorite angle (including the popular Zero Gravity position) with only 4 inches of space necessary between the chair and the nearest wall.

The OS-4000LS is equipped with dual mechanical foot rollers that knead the bottoms of the feet, 6 auto programs, 24 air compression bags that inflate and deflate around the areas of the body not covered by the roller track, heating in the lower back area, body scanning technology, and an extendable ottoman that accommodates users up to 6’4.

The OS-4000LS also comes with innovative features not seen in many other chairs, including a shoulder adjustment that allows you to modify the width of the shoulder airbags up to three settings so users of all body types can enjoy their therapeutic massage in comfort.

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Product Description


  • 42″ L-Track Roller System: The OS-4000LS Massage Chair is designed with the increasingly popular extended roller system, or L-track. With the OS-4000LS, the massage roller track will not only massage the neck and entire back like every other chair does, but also swings into the seat itself to provide a deep massage along the gluteal muscles. The chair’s powerful 42 inch roller system massages from the neck to the buttocks
  • 24 Airbags: The rest of the body not covered by the 42″ roller stroke — including the shoulders, arms, hands, lower back, calves and feet — are massaged using the chair’s 24 air compression bag system. The airbags in the chair have been redesigned such that there are fewer of them in the chair overall but cover more surface area, thus reducing the strain on the chair itself. The airbag massagers not only cover hard-to-reach areas, but they work together with the roller system to stretch the body
  • New! Foot Rollers: Dual reflexology foot rollers located on the bottoms of the footrest will apply a kneading style massage to the soles of your feet that target the acupuncture points. In addition, airbags will compress and decompress along the sides of your feet to push your feet deeper into the rollers in order to enhance your massage. Foot rollers are included in the OS-4000LS to revive tired and sore feet.
  • Zero Gravity “Weightless” Recline: The popular massage chair recline position perfected by NASA will place your feet 30 degrees above your heart and evenly distributes your weight across the chair. This recline position relieves compression along the spine, relaxes the neck and back, increases circulation and blood oxygen levels, expands lung capacity, and reduces tension throughout your entire body
  • Shoulder Width Adjustment: The OS-4000LS includes an innovative shoulder adjustment found in just a few chairs. Almost all massage chairs have a stationary shoulder airbag system that cannot be altered, which restricts users with broader and narrower shoulders from getting the maximum benefit out of their massage session. However, with the OS-4000LS’s shoulder adjustment, you can modify the chair’s shoulder width up to three settings to find a fitting that suits your body best
  • Lumbar Heating: The OS-4000LS includes heating elements along the lower back area to warm up your tense back muscles, which allows the rollers to work your back more effectively
  • Space Saving Recline: The design of the OS-4000LS permits you to place the chair within 4 inches of the nearest wall, minimizing the amount of floor space required in the room you plan to place the chair in. Compare this to other non L-track chairs that require anywhere from 1-2 foot of clearance in front of the wall
  • 6 Auto Programs: Simply tap a program on the remote control and the automated program will start within seconds. Choose from Deep Tissue, Stretch, Energy, Relax, Full Air, and Manual Air
  • 4 Manual Massage Techniques: When you use the chair’s manual settings, you can pinpoint any trouble areas you want the chair to focus on. For example, if you’d like the chair to focus on the neck, you can target that area of the body and have the rollers work on that region of the body until you’re satisfied. Manual massage techniques include Kneading, Tapping, Shiatsu, and Rolling
  • Body Scanning Technology: When you sit in the chair and it’s being powered up, the OS-4000LS automatically detects your body frame and locates the spine and makes micro adjustments as needed to give you a customized massage specifically for your body frame
  • Easy to Assemble: The chair comes in two boxes: the main body of the chair and the footrest. The entire chair is already pre-assembled with the exception of the footrest. Simply connect the footrest to the main body of the chair and you’re done! It will take approximately 10-15 minutes at most to fully install the OS-4000LS
  • OS-4000LS vs. OS-4000CS: The OS-4000CS and OS-4000LS are both the same exact chair except for one important detail: foot rollers. This version of the chair has rejuvenating mechanical rollers that spin underneath the feet; the OS-4000CS has a less impressive, mild air compression foot sole squeeze


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Free Extended Warranty


Osaki OS-4000LS Massage Chair Banner

42″ Extended Roller System (L-Track)

The Osaki OS-4000LS Massage Chair comes with a 42″ roller track and is designed with both an S-Track and L-Track scheme. In layman’s terms, the “S-Track” follows the natural “S-shaped” curvature of the spine.

In all S-Track chairs, the roller massage cuts off at the tailbone area; but with the OS-4000LS, the quad rollers veer into the seat of the chair to massage the gluteal muscles, including the piriformis and sacroiliac muscles. It’s called an “L-Track” because in combination with the “S-track,” the massage stroke makes a rough “L” shape.

With the OS-4000LS, you get the best of both worlds. The L-Track roller system massages from the neck, down your entire back, and finally reaches your buttocks and thighs.

Osaki OS-4000LS Massage Chair L-Track

New! Foot Rollers

Dual mechanical rollers are located underneath the soles of each feet that provide deep tissue, therapeutic kneading to the bottoms of the feet. While this is occurring, airbags will inflate and deflate on the sides of the feet to create a squeezing-like action. The intensity of the airbag pressure can be controlled from the remote control.

Airbags also inflate and deflate in the calves region, providing a rejuvenating calf massage.

Osaki OS-4000LS Massage Chair Foot Rollers

Zero Gravity Recline

The innovative and increasingly popular Zero Gravity positioning is a NASA inspired design. When the Zero Gravity button is chosen on the remote control, the legs are placed at heart level. This “weightless” position promotes better circulation, reduces the vertical pressure on the back, and promotes spinal decompression. This is a must-have feature in all massage chairs.

Osaki OS-4000LS Massage Chair Zero Gravity Recline

24 Air Compression Massage Pieces

Because the OS-4000LS has an extended roller system that covers a larger swath of the body, fewer airbags are needed overall to massage the critical areas of the anatomy not covered by the 42″ massage stroke. The airbags massage the shoulders, arms, hands, lower back, calves and feet. The air intensity can be adjusted by pressing the “Intensity” button. There are three airbag intensity options — from from mild to strong.

Osaki OS-4000LS Massage Chair Airbags

Adjustable Shoulder Width

The OS-4000LS is one of the few massage chairs that has a shoulder width adjustment to accommodate users of various heights and builds. Most chairs typically have shoulder massagers that stationary and can not be adjusted. This can often neglect not only taller and shorter users, but people who have broader and narrower shoulders. With this chair, this feature takes care of that for you. There are three levels of adjustments available, from the maximum of 9.85 inches to the minimum of 7.09 inches.

Osaki OS-4000LS Massage Chair Shoulder Adjustment

Space Saving Recline

As is the case for most L-track massage chairs, the chair will slide slightly forward during your massage session. Thus, the design of the chair allows you to place the OS-4000LS within 4 inches of the wall even during the chair’s maximum recline. Non L-track chairs will require up to 2 feet of clearance in front of the wall. This makes a perfect feature for people who have limited space to work with or want the chair that doesn’t take up a lot of floor space.

Osaki OS-4000LS Massage Chair Zero Wall Recline

6 Automatic Programs

The OS-4000LS comes with six touch-and-go automated modes that target the entire body. The auto modes featured on the OS-4000LS include Deep Tissue, Stretch, Energy, Relax, Full Air, and Manual Air.

Auto program descriptions:

  • Deep Tissue: This auto program engages the full body in a deep tissue massage. This program focuses on the neck, shoulders, waist and hips.
  • Stretch: This auto program consists of a full body stretching auto program, including the back muscles, hands, hamstrings and the rest of the body.
  • Energy: The perfect auto program to choose when starting your day. This mode will deliver a light, stimulating tapping massage throughout the whole body.
  • Relax: This auto program will start with a slow kneading and heavy tapping massage, which progresses into an in-depth massage that targets the neck and lower back.
  • Full Air: This auto program takes advantage of the chair’s airbag technology. It will apply a full body air pressure massage to the shoulders, arms, palms, lower back, buttocks, thighs, calves and feet. The intensity of the air massage can be adjusted by pressing the “Intensity” button.
  • Manual Air: This auto program will activate the airbag massagers to massage the areas of the body you want to target, including the shoulders, arms, palms, lower back, buttocks, thighs, calves and feet. As is the case in the Full Air mode, you can also adjust the intensity of the air massagers by pressing the “Intensity” button.

Customized Manual Mode

With the OS-4000LS, you can dive into the remote control’s manual mode to pinpoint specific areas of the body you want the rollers and airbags to target. For example, if you have a sore neck, you can localize the massage in that particular area and only that area. You can also set the width of the rollers (from wide to narrow), the position of the rollers and more. The manual mode massage techniques include Kneading, Tapping, Shiatsu, and Rolling.

Vibration Massage

The OS-4000LS has two plates in the seat of the chair that can be turned on in order to enjoy a soothing vibration massage. This feature can be activated by pressing the “Vibration” button on the remote.

Lumbar Heat Therapy

The OS-4000LS has two heating modules in the lower back region of the chair that helps soothe away muscle tension. Heat therapy not only loosens up the lower back muscle fibers, but will allow the rollers to provide a deeper massage across the lower back and lumbar region.

Osaki OS-4000LS Massage Chair Heat Therapy

Spring Loaded Extendable Ottoman

This chair will allow users of virtually all heights and builds to use the chair. Because of that, the OS-4000LS is designed with a spring loaded feature in the foot ottoman that can accommodate users who are up to 6’4 in height. When you sit in the chair, if you want to extend the foot ottoman, simply push with your legs to extend it out. You can also manually adjust the legrest via the remote control.

Osaki OS-4000LS Massage Chair Spring Loaded Foot Ottoman

Body Scanning Technology

The OS-4000LS comes with the latest in body scanning technology. The chair will map your body frame when it’s starting up and customize the massage rollers for your body build. Whether you’re 5’1 or 6’3, the chair’s body scanning feature makes it a versatile chair for the entire family.

Questions? Interested in purchasing? Chat with us at any time or give us a toll-free call at 844-862-4391


Suggested User Height 5’1 – 6’4 ft.
Suggested Max. User Weight 265 lbs.
Roller Track Length 42 inches (SL-Track)
Number of Airbags 24 Airbags
Number of Auto Programs 6 Auto Programs
Heat Lower Back
Timer 5-30 minutes
Maximum Operating Period 30 minutes
Chair Upholstery Synthetic Leather
Product Dimensions Upright: 47.2″ H x 30.7″ W x 63.4″ D
Full Recline: 33.9″ H x 30.7″ W x 78″ D
Weight Shipping weight: 272 lbs.
Product net weight: 227 lbs.
Remote Type Slim LCD Remote
Ships in 2 Boxes Big Box Dimensions: 33.9″ H x 32.5″ W x 62.0″ D
Small Box Dimensions: 20.9″ H x 19.7″ W x 22.8″ D
Power Consumption 180 Watts
Usage condition Environment temperature: 50° – 104° F
Storage condition Storage temperature: 68° – 140° F
Safety feature Equipped with overheating and power surge safety protection
Usage benefits Increasing blood circulation; Relieving muscular fatigue
Origin Made in China; Ships from the USA


choose from one of these 3 shipping options:

1) Curbside Shipping - FREE

All of our massage chairs qualify for free curbside delivery, which typically ships within 1-3 business days of placing your order. Once the chair arrives at your local delivery terminal, the delivery company will give you a call to arrange a delivery window. Please note that the delivery person is not responsible for carrying the chair into your home, though they may if you ask them to do so. Also note that depending on the chair you are purchasing, it will arrive unassembled. Assembly instructions are included in your chair’s packaging and can be installed in about 15-60 minutes.


If you prefer to have your massage chair assembled for you, a White Glove Delivery upgrade is offered for this massage chair. If this option is selected, a professional installation team will schedule an appointment with you to determine the best time to deliver your massage chair. Once the delivery team arrives, they will carry the chair into your home or business, remove the packaging, and install it in the room of your choice. Your chair will be operating correctly before they leave.


If you prefer to have your massage chair brought inside your home or residence, a Threshold Delivery upgrade is offered for this massage chair. Your massage chair will be brought just beyond the main entrance of your residence or business, but not to a specific room. It can also be stored in your garage. This shipping method does not include assembly nor the removal of packaging. Threshold Delivery is a happy medium between free Curbside Delivery and White Glove Delivery. The vast majority of our customers are most concerned with the hassle of hauling the chair’s packaging in their home or business, and are capable of assembling the chair themselves (if necessary). This is fulfilled with Threshold Delivery.

Choose From One of These 3 Warranty Options:

3 Year "Rock Solid" Warranty with Limited Parts and Labor - FREE

Osaki guarantees that your qualified product will be replaced or repaired at our option, without cost to you, should it be deemed defective because of faulty parts, workmanship or structural defects during the first three (3) years of ownership. This warranty plan includes one (1) year of in-home labor, two (2) years of parts and structural framework, and three (3) years of structural framework.


1) 1 Year Extended Warranty (4 Years Total) - $149

For an additional price, Osaki guarantees two (2) years of in-home labor, three (3) years of parts and structural framework, and four (4) years of structural framework.

2) 2 Year Extended Warranty (5 Years Total) - $249

For an additional price, Osaki guarantees three (3) years of in-home labor, four (4) years of parts and structural framework, and five (5) years of structural framework.

NOTE: Your preferred warranty option can be selected prior to adding the chair to your cart. The free 3 year warranty option is selected by default. You have 30 days from the date of purchase to add extended warranty coverage. Call us at 844-862-4391 to add extended warranty coverage to an existing purchase.

1 review for Osaki OS-4000LS Massage Chair

Customer reviews

Rated 4.9230769230769 out of 5 stars
13 reviews
3 stars 0
2 stars 0
1 star 0
  1. Best Chair EVERI did a months worth of research. Other chairs were more expensive but did not offer the L track. That's the tushie massage. My wife and have used this chair almost every single day 3,4 and even 5 times a day. I am on my feet all day and she sits at a desk. This chair is amazing. I was skeptical and worried because it was the most we have ever paid for a chair. This chair is AMAZING the feet massage is great. suggest wearing socks makes it perfect. improvements make the back light more visual so you can see it. got a light next to the chair problem solved. would like have it run for an hour straight. Puts me to sleep every time. Honestly cannot say enough good. Going to get a 2nd chair so we can both have our own. Wife and I joke constantly BEST CHAIR EVER. LOL more then paid for itself being that we would go to a get a massage costing 100.00 each time per person. Set up super easy it has wheels so you can lift it and move into place. It does take 2 people to move it to where you want then adjust is easy. live in southern California corona want to get one for my Midas shop.

    Was this review helpful to you? 2 of 2 people found this review helpful

  2. Mr. SoLarI am in love with Mr. SoLar! We meet twice a day for the best massage in the world. The way he plays music (Yoga) via Bluetooth is so relaxing. I’ve experienced most of the different massages and mostly use the Sleep and Auto massage. The Tai massage is out of this world. Mr. SoLar is out of this world. The Chair works great and is popular among friends and family. This chair is worth every penny. No regrets. I would definitely recommend this model and Massage Chair Deals.

    Was this review helpful to you? 2 of 2 people found this review helpful

  3. Osaki 04 4000LSA great chair. I just love mine. It sure makes my back feel better

    Was this review helpful to you? 3 of 3 people found this review helpful

  4. K. BrooksI LOVE this chair. I had a different make and model for years and thought it was the best thing ever...boy was I wrong. The 4000LS has lot of bells and whistles. Mike suggested a more updated version because the color we ordered was not in stock and might not be for a long time...we opted to change the color and stay with the 4000LS. There are so many options to choose from... It is a good thing it comes with a detailed Instruction Manual. The Deep Tissue option was a little overwhelming the first time I tried it...but now it is my favorite. It is amazing how quickly it gets your body into relax mode. Yes it is almost expected to put you to sleep. The only thing I don't like is that the On /Off power button is way in the back towards the floor. Since the chair is smaller and can fit into tighter spaces , it makes it difficult to each around the back and get down to the floor to turn it on and off. It has become the favorite piece of furniture in the house now.

    Was this review helpful to you? 4 of 4 people found this review helpful

  5. We purchased the 4000cs and mike called us and said that they did not have any, so he offered us the 4000ls and I am so impressed with this chair. Every program and setting is amazing and I use it every day The foot massager is amazing also. Only negative issue is, my son is 6 foot 5 inches tall and can't use it. Some day I hope you will develop a chair for tall and large people. We will be shopping for that also. Love the chair and your company. Great customer service.

    Was this review helpful to you? 3 of 3 people found this review helpful

  6. I was going to order the 4000CS that Costco had on sale but after some researching I kept seeing other OSAKI 4000 series like the OS-4000 and this OS-4000LS. I was told by a rep named Mike (the same Mike that others are referencing probably) that this OS-4000LS is the same model as OS-4000CS except this version had foot rollers. They offered a price match for the upgraded version and I purchased on the spot. Mike has been v helpful in answering post-purchase inquires over email in a timely matter. Kev.

    Was this review helpful to you? 2 of 2 people found this review helpful

  7. I bought this 10 days ago, and so far I am very impressed with it. I am 86 years old and have lots of aches and pains, especially in the lower back, and this chair relieves them all. Love it messaging my feet and legs as well.

    Was this review helpful to you? 2 of 2 people found this review helpful

  8. We absolutely love these chairs! We decided that we had to have a his and hers set up for our new basement and they are a hit. The foot rollers are probably my favorite, oh and the deep tissue setting. They're easy to operate and have a very nice appearance to boot.
    One last thing I have to mention is the top notch service we received from massagechairdeals.com. I ordered the chairs on Tuesday a week before Thanksgiving and absolutely needed them by the next Wednesday as we were entertaining for Thanksgiving. He said it shouldn't be a problem but with black Friday on the horizon etc. he couldn't guarantee anything. So I proceeded with the order and I couldn't believe when they arrived 3 days later!!! Very impressed highly recommend doing business with this company!

    Was this review helpful to you? 2 of 2 people found this review helpful

  9. I purchased this chair as an early Christmas gift and I simply love it. The chair has 6 pre-programmed massages so if you don't want to learn everything that you can do with the remote you can simply choose to use one of those. I use the deep tissue and stretch options almost exclusively.

    The set up was very simple since the only thing not installed was the foot/leg attachment and it was pretty fool proof.

    I have had no problems with the chair, it works like a charm. Getting it into place was the only difficulty found and that was due to it size and weight. If you have any steps that you need to negotiate then you will need to plan ahead because of it's weight. Take note of the chairs dimensions so that you don't run into in problems. I found that the doorway to my bedroom was undersized so that the door and frame had to be removed.

    Was this review helpful to you? 2 of 2 people found this review helpful

  10. I'm ashamed to admit that I spoke to Mike more than a half dozen times about which chair would be right for me. I was completely overwhelmed with all the choices out there. A place to try out the chair was no where near where I lived so I relied heavily on his input. He was tremendously helpful going through every model and narrowing down what chair would be right for me.

    In the end I decided to go with an L-track chair because that's what we agreed would fit the needs of my wife and I. The 4000LS's L-track massages not only the back with the rollers but also reaches the glutes and comes back up to massage the back.

    There were a few other L-track chairs we were looking at but we kept coming back to this chair. The reason? The SHOULDER ADJUSTMENT. My wife is very petite and I have much broader shoulders. This is the only L-track offered where you can push the shoulder housing in or out up to three settings to fit us both comfortably.

    We've had the 4000LS for about 2 months now and while the narrowest shoulder housing option is still a little wide for my petite wife, the other options would have been far worse and prevented her from getting the best shoulder massage possible. I use the very widest shoulder adjustment and it fits me perfectly. If you have a petite frame or have someone in your household who has a smaller frame, this is a feature you NEED. Mike told me that all the other chairs minus two others that we didn't want have this feature.

    Other than that quibble which might not be a big deal for other.. the HEATING, FOOT ROLLERS, ARM MASSAGE, ZERO GRAVITY and STRETCH modes are fantastic.

    This chair stays in Zero Gravity after the massage timer is complete which was a pleasant surprise because I assumed that it would go back in the upright position when the cycle completed. This is a great bonus for both of us who have been caught sleeping in the 4000LS several times.

    Thanks again to Mike.


    Was this review helpful to you? 2 of 2 people found this review helpful

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