Head-to-head
Osaki OS-4000XT vs Osaki OS-Pro Maestro 4D
Both chairs are compared using the same canonical specification records that power our reviews. Values are labelled in each review as Research Reviews.
ChairMentor may earn a commission when you purchase through links on our site. This does not affect our editorial evaluations. Read our affiliate disclosure.
| Specification | ||
|---|---|---|
| Price (typical street) | $4,799 | $8,999 |
| Best for | Entry into a full-featured L-track chair | Full-body coverage in a flagship chair |
| Roller technology | 2D | 4D |
| Track | L track | SL track |
| Track length | 49" | 51" |
| Air compression (airbags) | 32 | 30 |
| Foot massage | Yes | Yes |
| Calf massage | Yes | Yes |
| Heat | Lumbar | Back rollers |
| Zero gravity | 2 | 3 |
| Body scan | Yes | Yes |
| Stretch | Yes | Yes |
| Height range | — | — |
| Weight limit | 260 lbs | 260 lbs |
| Dimensions (upright) | 67.2" L x 28.8" W x 44.5" H | 61.1" L x 31.9" W x 48.1" H |
| Wall clearance | 2" | 5" |
| Warranty | 1 year parts and labor, with 2nd and 3rd year parts coverage | 5-year limited (3 years full service plus 2 additional years parts) |
| ChairMentor verdict | Osaki's entry L-track chair and the cheapest way into the brand. Research Review built from Osaki's official specification table; every figure below links to the page it came from. | Osaki's long-running flagship 4D chair, and still the one with the deepest roller path in the line. Research Review built from Osaki's official specification table, with a source link on every figure. |
The short version
Osaki OS-4000XT: entry into a full-featured l-track chair. 2D rollers on a L track, with a stated fit range of —. Read the full review.
Osaki OS-Pro Maestro 4D: full-body coverage in a flagship chair. 4D rollers on a SL track, with a stated fit range of —. Read the full review.
How to decide
Start with fit. If only one chair covers your height and weight comfortably, the rest of the specification sheet is secondary. Then weigh track coverage against roller technology, and finally compare warranty terms from the specific retailer you intend to buy from.
This pairing is generated from the product database and does not yet carry an editorial verdict. Our curated head-to-heads are listed on the compare page.