Infinity Riage 4D vs Synca Kagra 4D
Synca Kagra 4D leads on our weighted scoring by 0.4 points over Infinity Riage 4D. Infinity Riage 4D costs $1,000 less — about 10% — so the question is whether what Synca Kagra 4D adds is worth that to you. They separate most on price (Infinity Riage 4D), overall score (Synca Kagra 4D) and track — those are the rows worth reading closely. In short: Synca Kagra 4D for buyers who want flagship massage and furniture looks; Infinity Riage 4D for shoppers who want 4D performance without Japanese-flagship pricing.
| 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 |
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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