Skip to content
Our Story Our Athletes Why Buy From Us Reviews FAQs Contact Us Learning Center Custom Quotes FSA/HSA Recovery Rooms Rewards Program My Account
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair
Osaki OS-4000XT Massage Chair

Osaki OS-4000XT Massage Chair

by Osaki
$4,799.00 - $4,799.00
$4,799.00
$4,799.00 - $4,799.00
$4,799.00

✓ Authorized Osaki Dealer
✓ Lowest Price Guaranteed
✓ FREE & FAST Shipping: In Stock and Ready to Ship
✓ Questions? Call an RFA Team Member: 1-855-864-6442

WE PRICE MATCH BIG BOX STORES ON THIS MODEL. CALL, CHAT, OR EMAIL FOR PRICE MATCH.

Osaki | Model OS-4000XT

Osaki OS-4000XT Massage Chair

The Osaki OS-4000XT is a 2D massage chair built on an L-track, which is the piece of geometry that separates it from most chairs sold at the same money. The rollers start behind your neck, follow your spine down, then leave the spine at the lower back, turn forward under the seat, and keep working out across your glutes and the tops of your hamstrings. An S-track massage chair ends its stroke at the tailbone and hands the seat over to airbags, while the L-track lets a single pass on the OS-4000XT cover your whole back and the top of your legs. Behind that track sits a 2D roller mechanism, six auto programs, six massage styles and a 220 lb user rating.

Two other pieces are worth knowing before you sit down. A heart rate monitor sits inside the armrest, so it reads you through the arm you are already resting on and there is nothing to strap on. Zero gravity reclining gives you two stopping points to pick between, and space saving technology walks the base forward as the backrest drops, so the OS-4000XT reaches full recline with 2 in. of wall behind it. Around all of that, 24 airbags squeeze your shoulders, arms, calves and feet, two heating pads warm the lumbar, and a spinning reflexology roller waits in the footwell for your soles. The chair weighs about 217.1 lb, stands 60.6 by 28.8 by 44.5 in. upright, and comes with a four-speaker Bluetooth sound system and an LCD remote that names the function it is running.

Mechanism
2D
Running on an L-track
Auto programs
6
Plus 6 massage styles
Airbags
24
Compression around each limb
Max user weight
220 lb
Chair weighs 217.1 lb
L-track past the tailbone to the upper hamstrings Sensor in the armrest Two-step zero gravity 2 in. of wall clearance at full recline
Osaki OS-4000XT 2D L-track massage chair shown upright

Inside the chair

Track Shape Is the Spec Buyers Get Wrong

Track shape is the specification buyers get wrong most often, and the OS-4000XT is the only L-track chair in its comparison group, with a 2D roller carriage, six massage styles and a sensor in the armrest sitting behind it.

📏
Where an L-Track Leaves the Spine
Three track shapes turn up on massage chair spec sheets. An S-track follows the S-curve of your spine and stops at your lower back, which leaves your glutes and hamstrings to the airbags. An L-track leaves the spine at that point, turns forward under the seat, and carries the rollers on across your glutes and upper hamstrings, which is the path the OS-4000XT takes. An SL-track welds the two shapes into one rail, keeping the spinal curve of the S and adding the seat extension of the L. What you feel between an L-track and an SL-track is how closely the rail follows the curve of your upper and middle back on the way down, since the L rail runs a straighter line through that stretch. The OS-4000XT covers the same ground as an SL chair, neck to upper hamstrings, on the simpler and less expensive of the two rails.
Neck to upper hamstrings
⚙
A 2D Mechanism and Six Massage Styles
A 2D roller carriage moves on two axes: up and down the length of the track, and side to side across it. Depth is fixed by the mechanism, so a 2D chair holds one distance from your back for a whole session and the firmness you can change comes from the strength setting and how far you recline. A 3D massage chair adds a third axis that pushes the rollers out of the backrest and pulls them back in, giving you protrusion as an adjustable setting, and a 4D massage chair varies the speed of that protrusion through the stroke. Out of the two axes here come six named styles, kneading, tapping, Swedish, clapping, rolling and shiatsu, and manual mode lets you park any of them on one spot or run one across a whole section of your back with the mode, position, strength and roller width set by hand.
2 axes, 6 styles
💓
The Sensor in the Armrest
Osaki call the part a heart rate monitor and an Ache Sensor. It sits in the armrest, so a reading costs you no setup at the start of a session: put your arms down the way you would anyway and it works from there. Higher up the comparison below, the Osaki Ai Envy reads you from a body condition detector you rest your fingers and palms on, so the two chairs at either end of that group are the ones that take a reading at all. Either way it is a comfort feature on a consumer massage chair, it makes no diagnosis, and it is not a medical device.
Reads through the armrest
🛴
Two-Step Zero Gravity
Zero gravity recline came out of NASA seating work. The chair tips back until your knees sit above your hips and the angle between your back and your thighs opens out, which puts the weight of your torso onto the backrest itself. With the backrest carrying you, the rollers meet more resistance and the massage lands harder at the same setting. The OS-4000XT gives you two stopping points to pick between, and space saving technology slides the frame forward as the backrest drops, so 2 in. of wall is all it needs to reach either one.
2 recline stages

The numbers

From the Rail Down to the Speakers

Eight lines covering what the OS-4000XT carries, from the shape of its track down to the number of speakers.

📏
L-track roller path
Neck through to the upper hamstrings
💨
24 airbags
Shoulders, arms, calves and feet
📱
6 auto programs
Neck and Shoulder, Strengthen, Relax, Thai, Recover, Sleeping
✋
6 massage styles
Kneading, tapping, Swedish, clapping, rolling, shiatsu
💓
Armrest sensor
Heart rate monitor, also called the Ache Sensor
🛴
Two-step zero gravity
Two recline stops to choose from
🌡
Lumbar heat
Two heating pads in the back section
🔊
Four Bluetooth speakers
Two in the headrest, two in the side panels

Closer look

Airbags Press Your Soles Onto a Spinning Roller

Osaki OS-4000XT massage chair with LCD remote control
Controls

The Screen Names What Is Running

The six auto programs are named for what they do: Neck and Shoulder, Strengthen, Relax, Thai, Recover and Sleeping. Under them, manual mode hands you the six styles one at a time, so you can hold kneading on a single point between your shoulder blades or run rolling down a whole section. Mode, massage position, massage strength and roller width all come off the LCD remote by hand, and the screen names the function currently running, which matters on a chair you operate with your eyes shut. Four Bluetooth speakers are built in, two in the headrest and two in the side panels.

  • 6 auto programs: Neck and Shoulder, Strengthen, Relax, Thai, Recover, Sleeping
  • 6 massage styles: kneading, tapping, Swedish, clapping, rolling, shiatsu
  • Manual control of mode, position, strength and roller width
  • LCD remote displaying the active function
  • Four-speaker Bluetooth sound in the headrest and side panels
6 auto programs LCD remote Bluetooth speakers
Osaki OS-4000XT massage chair footrest and leg section
Air, heat and feet

A Hard Moving Contact No Airbag Can Copy

24 airbags sit at your shoulders, your arms, your calves and your feet, and they work by compression: inflate against the limb, hold, release. Two heating pads in the back section put warmth through your lumbar while a program runs. Down in the footwell, a spinning reflexology roller turns under your soles, a hard moving contact against the arch and the ball of the foot that no airbag can copy. The foot airbags inflate around it and press your feet down onto the roller, so the pressure at the sole climbs as the bags fill. The footrest slides out for longer legs, which puts your soles flat on the roller and drops your calves into the calf wells where the air can reach them, and it retracts again for a shorter user, so a household of different heights shares the same chair without anyone crouching or hanging off the end.

  • 24 airbags at the shoulders, arms, calves and feet
  • Two lumbar heating pads in the back section
  • Spinning reflexology roller under the soles
  • Foot airbags press the soles onto the roller as they inflate
  • Extendable footrest
24 airbags Lumbar heat Foot roller
Osaki OS-4000XT massage chair reclined
Footprint and fit

60.6 in. Upright, 70.9 in. Reclined, 2 in. of Wall

Measure the room before you order, because this chair takes a different footprint upright and reclined. Upright, the OS-4000XT is 60.6 by 28.8 by 44.5 in. Reclined, it is 70.9 by 28.8 by 37.0 in. The 28.8 in. holds steady across both, so that is your width. The 10.3 in. the chair gains going back is taken up in front of it, because space saving technology walks the base forward as the backrest lowers, leaving 2 in. behind. The chair weighs about 217.1 lb and takes a user up to 220 lb. A session runs 15 minutes, and the chair draws 100W at 110 to 120 V, 60Hz. The controller cord is 59 in. and the power cord is 70.9 in., worth checking against where your outlet sits. Three numbers are worth writing down before you order: 28.8 in. for every doorway and hallway turn on the route, 70.9 in. of floor from the back of the chair forward for the reclined length, and 2 in. of gap behind it.

  • Upright 60.6 x 28.8 x 44.5 in.
  • Reclined 70.9 x 28.8 x 37.0 in.
  • 2 in. of wall clearance for a full recline
  • Chair weight approximately 217.1 lb, maximum user weight 220 lb
  • 15 minute rated time, 100W at 110 to 120 V
  • Controller cord 59 in., power cord 70.9 in.
2 in. from the wall 220 lb capacity Space saving

Compare

Four Chairs on the 2D to 3D Ladder

Four chairs running from a 2D roller up to an AI-assisted 3D roller. The OS-4000XT is the bottom rung and the only L-track chair among them, with the armrest sensor as hardware the other three do not carry. Climb the ladder and you gain roller depth, programs and user capacity.

You're Here
Osaki OS-4000XT massage chair
Osaki OS-4000XT
A 2D roller on an L-track with a heart rate monitor built into the armrest, and the lowest user capacity in this group at 220 lb.
2D rollers L-track 6 auto programs Heart rate monitor
Currently viewing
Osaki OS-Tao 3D massage chair
Osaki OS-Tao 3D
Steps up to a 3D roller on a full SL-track, with three-stage zero gravity and memory profiles for more than one person in the house.
3D rollers 24 air cells 15 auto programs Memory profiles
Shop the Osaki OS-Tao 3D
Osaki Ador 3D Allure massage chair
Osaki Ador 3D Allure
The widest auto-program library in this group at twenty-one, with a triple action foot massager and calf roller underneath.
3D rollers 21 auto programs 3-step zero gravity Triple foot massager
Shop the Osaki Ador 3D Allure
Osaki Ai Envy massage chair
Osaki Ai Envy
The top of the 3D group: an AI body condition detector, thirty-eight air cells and a 280 lb capacity, the highest of the four.
3D rollers 38 air cells 280 lb capacity AI condition detector
Shop the Osaki Ai Envy

Questions

Frequently Asked Questions

An L-track turns forward at your lower back and continues under the seat, so the rollers travel from your neck through your lower back and out across your glutes and upper hamstrings, which is the path the OS-4000XT takes. An SL-track joins an S-shaped section to that same L extension in one continuous rail, so it hugs the curve of your upper and middle spine more closely on the way down. Both cover the same territory, so the choice is about how closely the rail tracks the curve of your upper back on the way down, not about how far down it reaches.
2D. The roller carriage moves up and down the track and side to side across it, two axes, with the depth of the pressure fixed by the mechanism. A 3D chair adds a third axis that pushes the rollers in and out of the backrest so you can set how deep they go. Every other chair in the comparison above is 3D.
A sensor built into the armrest, carrying two names on this chair: Osaki call it a heart rate monitor and an Ache Sensor. You use it by sitting normally, with nothing to strap on and nothing to hold, and it makes no diagnosis and is not a medical device.
Six auto programs: Neck and Shoulder, Strengthen, Relax, Thai, Recover and Sleeping. Underneath them sits a manual mode with six massage styles you can aim at one spot or run across a whole section of your back.
Kneading, tapping, Swedish, clapping, rolling and shiatsu. In manual mode you also set the massage position, the massage strength and the width of the rollers.
2 in. Space saving technology slides the chair forward as it reclines, so the OS-4000XT still reaches full recline from that distance. Leave room in front for the reclined depth of 70.9 in.
Upright: 60.6 by 28.8 by 44.5 in. Reclined: 70.9 by 28.8 by 37.0 in. The chair weighs about 217.1 lb. The 28.8 in. figure is the one that holds steady between upright and reclined, which makes it your width.
220 lb, the lowest figure of the four chairs in the comparison above and the number worth checking before any other specification on the page. If you are near it or over it, look up the ladder: the Osaki Ai Envy at the top of that group takes 280 lb, a full 60 lb more. The chair itself weighs about 217.1 lb, so plan on help with the delivery either way.
Yes, in the lumbar. Two heating pads sit in the back section of the OS-4000XT and put warmth through your lower back while the massage runs.
Both. A spinning reflexology roller sits at the bottom of the footwell and works with a kneading action against your sole, and the foot airbags inflate around your feet and push them down onto it. The footrest extends for longer legs and retracts for shorter ones, and getting that length right is what places the ball of your foot and your arch over the roller, with your heel behind it.
The rated time is 15 minutes. Power draw is 100W at 110 to 120 V, 60Hz. The controller cord is 59 in. and the power supply cord is 70.9 in.
Yes. The OS-4000XT carries four Bluetooth speakers, two in the headrest and two in the side panels, which Osaki call a 4D surround sound system.
  • Mechanism: 2D
  • Track type: L-track
  • Air cells: 24
  • Auto programs: 6
  • Massage styles: 6
  • Heat: 2 lumbar pads
  • Zero gravity: 2-step
  • User capacity: 220 lb
  • Chair weight: 217.1 lb
  • Upright dimensions: 60.6 x 28.8 x 44.5 in.
  • Reclined dimensions: 70.9 x 28.8 x 37.0 in.
  • Wall clearance: 2 in.
  • Session timer: 15 minutes
  • Power: 110 to 120 V, 60 Hz, 100 W
  • Controller cord: 59 in.
  • Power cord: 70.9 in.
  • Track: L-track carrying the rollers from the neck through the lower back to the glutes and upper hamstrings
  • Air massage: 24 airbags at the shoulders, arms, calves and feet
  • Auto programs: 6 programs: Neck and Shoulder, Strengthen, Relax, Thai, Recover and Sleeping
  • Massage styles: Kneading, tapping, Swedish, clapping, rolling and shiatsu
  • Armrest sensor: Heart rate monitor in the armrest, also called the Ache Sensor
  • Zero gravity: Two-step recline, full recline 2 in. from the wall
  • Heat: Two heating pads in the back section at the lumbar
  • Audio: Four Bluetooth speakers, two in the headrest and two in the side panels
  • Mechanism: 2D carriage moving up and down the track and side to side across it
  • Foot roller: Spinning reflexology roller under the soles, with the foot airbags pressing the soles onto it
  • Footrest: Extendable footrest for longer legs
  • Controls: LCD remote showing the active function, with mode, position, strength and roller width set by hand

3 Year Standard Manufacturer's / Parts & Labor Warranty

 

This NON-TRANSFERRABLE Warranty is provided by Titan Chair LLC.

We 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, excluding specific limitations contained herein.

 

What Is Covered*:

  1. This warranty explicitly covers all parts, labor and framework of the chair.
  2. This warranty includes parts costs and labor for the first year at no cost to the customer.
  3. This warranty includes parts costs covered for the second year at no cost to the customer.
  4. Structural Framework on selected products carries for three (3) years.
  5. The additional extended warranties includes parts and labor costs covered at no cost to the customer.

What Is NOT Covered*:

  1. Any shipping expenses incurred. Transportation damage; theft; abuse; neglect; vandalism.
  2. Damages incurred due to shipping and handling, dropped products, improper installation, and/or unauthorized repairs do not constitute a defect under this warranty.
  3. Modifications or altered conditions of the original product, improper use of electrical/power supplies, electrical disturbances and power surges.
  4. Malfunctions due to improper use as well as unreasonable use or maintenance including failure to follow operating instructions.
  5. Any environmental conditions (examples: fire, floods, rust, corrosion, sand, dirt, windstorms, hail, earthquakes, and/or tornados) or any other exposure to weather conditions.
  6. This warranty does not include normal wear and tear including velcro or zipper malfunction, or tears in any fabric covering by abuse. Failures or attached points in stitching, Velcro, and zippers do not constitute as a defect for warranty.
  7. Softening/ hardening of foams and filling composites in pillows and pads; Fading, wear, and pilling of fabrics does not constitute a defect under this warranty as those items naturally change with use.
  8. Natural patterns and grains and variations in leather will not constitute as a defect under this warranty, as no two pieces of fabric are identical.
  9. The warranty shall not apply if the product has been damaged physically, whether intentionally or due accident or neglect: including stains, fluids, mold, water damage, animal damage, cuts, burns or is otherwise unsanitary, damaged or soiled.
  10. Products used in commercial or corporate settings.
  11. Products purchased from unauthorized dealers.
  12. Under this warranty, if a product is determined to be unfixable and requires replacement, the customer is responsible for placing the chair in the garage or another accessible location for the driver to pick up. The returned item must be properly packaged; otherwise, the agent will not be able to pick it up. Upon delivery, the delivery agent will place the chair in the driveway or the nearest accessible area, such as the garage.

Implied Warranty & Other Damages:

  1. Any implied warranties shall be limited to the duration of the 1 year portion of this limited warranty, and with regard to structural framework, limited to the duration of the 3 year portion of this limited warranty.
  2. By making a purchase, you agree that Titan Chair LLC. will not be liable for any items damaged and/or lost while en route to the specified address. Any claims for such loss or damage must be addressed and resolved with the designated carrier.
  3. In no case will Titan Chair LLC. be liable for incidental or consequential damages, whether such damages are claimed on account of breach of warranty, breach of contract, negligence or strict/product liability, including without limitation, damage to property (other than the product) or other economic losses.

How to obtain warranty service:

  1. You must provide proof of purchase for any warranty claim.
  2. You must obtain a return authorization number in order to ship products to a service center.
  3. You may obtain service advice, or an RMA number by contacting the Titan Chair LLC Customer Service department toll-free at 1-888-848-2630 ext.3.
  4. This warranty gives you specific legal rights. You may also have other rights that vary from state to state.

Titan Chair, LLC Warranty Limitations and Exclusions

Warranties are non-transferable, and do not cover any damage or loss caused by: use in a commercial or corporate setting; failure to follow operating instructions; Electrical disturbances and power surges; dropped product; including but not limited to remote controls; Damage resulting from improper use or maintenance; vandalism; environmental conditions; exposure to environmental conditions (rust, corrosion, sand, dirt, wind, hail, earthquake, tornado, fire, flood); loss of use during the period that the product is being repaired; products purchased from unauthorized resellers; alterations or modifications of original condition; theft; neglect; unauthorized repairs; loss of power.
Damage that occurred due to shipping and handling does not constitute a defect under this warranty. Fading, wearing, and the pilling of fabrics does not constitute a defect under the warranty. Failures of attach points such as stitching, Velcro, and zippers do not constitute a defect under this warranty. Under no circumstance shall Titan Chair, LLC or its representatives be liable for indirect, consequential, or incidental damages (including damages for lost profits, business interruption, bodily injury, medical, etc.), even if any party has been advised of the possibility of such damages.
Warranties are only valid within the 48 contiguous United States and Canada, provided the equipment has been operated according to the instructions accompanying it. All warranties begin on the DATE OF PURCHASE. Titan Chair, LLC, at its sole discretion, will repair or replace any defective part within a reasonable time frame.

Free Curbside Delivery – Average Shipping Time 7-10 Days

Curbside Delivery ships via Freight to the 48 contiguous states. The freight company will deliver your massage chair to a carport or first-floor entryway. Please check the box dimensions and ensure it will fit through your doorway. Assembly is required and can take 30-90 minutes, depending on the chair.

Threshold Delivery – Average Shipping Time 7-10 Days

Threshold Delivery ships via Freight to the 48 contiguous states. The freight company will deliver your massage chair inside your home (no stairs) just inside the doorway. Please check the box dimensions and ensure it will fit through your doorway. Assembly is required and can take 30-90 minutes, depending on the chair.

White Glove Delivery – Average shipping time 10-16 Days

In-Home Delivery and Assembly is the same as White Glove Delivery. Your massage chair will be shipped via Freight to the White Glove Delivery warehouse. They will contact you to schedule a delivery time and date when they receive your order.

The White Glove Delivery team consists of a two person installation team that will deliver (up to 2 flights of stairs), unpack, and install your massage chair in your room of choice. These are not professional massage chair installation experts but a furniture installation team. They may or may not have installed your massage chair model before.two-person

Overall rating: 4.0 / 5 from 1 reviews.

AI Generated Review Summary

Summary topics

Review topics: [].

Review highlights

Reviews

Perfect After a Long Day

"This was exactly what I needed after a long day and a long week! There was a small blemish that, I believe, happened during transport and not set-up, but we did not want to wait for the exchange process so we kept this one. It was a small enough mark. Used it the moment I got home. The perfect ending to my day!"

— Kristina L. (4/5)

Q&A