Infinity Riage 4D vs Synca Kagra 4D
Synca Kagra 4D scores highest overall, while Infinity Riage 4D is the most affordable. These products suit different buyers, so weigh the criteria that matter most for your setup rather than the headline score alone.
| 2 products |  Infinity Infinity Riage 4D |  Synca Wellness Synca Kagra 4D |
|---|---|---|
| Price | $8,999 | $9,999 |
| Overall score | 8.3 | 8.7 |
| Track | L-track | Hybrid track |
| Rollers | 4D back mechanism (adjustable width, length, intensity, speed) | 4D |
| Zero gravity | Yes, 2 recline levels | Yes |
| Heat | Lumbar heat | Yes |
| Auto programs | 10 choreographed auto programs | Multiple auto programs |
| Max user height (in) | 74" optimal max (range 59"–74") | ~6'4" |
| Warranty (yr) | 5-yr frame / 3-yr parts / 1-yr in-home labor | Up to 4 years |
| Reclined length | 30" W x 59" D upright (69" reclined); Zero Wall Fit | Furniture-grade footprint |
Infinity
Infinity Riage 4D
Best for Shoppers who want 4D performance without Japanese-flagship pricing
$8,999
Synca Wellness
Synca Kagra 4D
Best for Buyers who want flagship massage and furniture looks
$9,999$10,999
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