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Infinity Dynasty 4D Massage Chair

$3,999.00 $11,999.00

✓ Free shipping, fully insured — curbside delivery included
✓ 60-day money-back guarantee — no restocking fees
✓ Full manufacturer warranty — authorized Infinity & Kyota dealer
✓ 0% APR financing available with Affirm
✓ Questions? Call or text a chair expert: 806-547-1998

The Dynasty 4D is the price-to-feature outlier in Infinity's lineup: heated 4D rollers, a 49" L-track, and a spinal-correction stretch at a sale price that undercuts most 3D chairs. If you want flagship features without a five-figure spend, start here.

What you get

4D quad rollers moving up, down, left, right, in, and out, with adjustable speed, intensity, and roller heat
49" L-track from neck to glutes with adjustable width
Zero-gravity recline and zero-wall design that sits close to the wall
Spinal correction stretch, a milder waist-twist mode, and a full-body decompression stretch
Body scanning that maps roller position to your back
Full-body airbag compression, reflexology foot rollers, lumbar heat
Chromotherapy lighting: eight colors, five brightness levels, six themes
Bluetooth speakers in the headrest

Who it fits

Buyers with chronic lower-back tightness get the most out of this chair. The spinal correction stretch pulls harder than anything else at this price, and the waist twist gives you a gentler option for bad days.

Before you buy

Ships free and insured with Infinity's full manufacturer warranty. Comparing the Dynasty against a CPO flagship? Call or text 806-547-1998 and we'll walk you through the tradeoff in one call.

Specifications & dimensions

Dimensions (upright)	67"L x 35"W x 49"H
Dimensions (reclined)	73"L x 37"W x ~32.5"H (reclined)
Chair weight	304 lbs
Max user weight	300 lbs
User height range	5'2" - 6'4" (62-76 in)
Track	49" L-Track
Roller mechanism	4D Back Massage Mechanism
Auto programs	12
Heat therapy	Lumbar
Warranty	5 Year U.S. Residential Limited Warranty (5yr frame / 1yr labor / 3yr parts)

Measure your doorways and the spot you have in mind before ordering — and if you're unsure it fits, call us at 806-547-1998 and we'll check with you.

Watch the official video

Customer reviews

New to massage chairs? The jargon, translated

Every spec on this page, in plain English. Massage chairs are a big purchase, and the industry buries the important stuff under acronyms. Tap any term.

2D, 3D, 4D — what the numbers mean

The number tells you how the rollers move. 2D rollers travel up-down and side-to-side at one fixed depth. 3D adds depth: the rollers push into your back harder or softer, so you choose how deep the massage goes. 4D adds changing speed mid-stroke, which is what makes it feel like human hands instead of a machine on a loop. If you want real deep-tissue work, treat 3D as the minimum; 4D feels the most human and costs the most.

S-track, L-track, SL, J-track

The track is the rail the rollers ride along your body. An S-track follows the curve of your spine from neck to lower back and is best for stretch programs. An L-track keeps going under the seat, so the rollers also massage your glutes and hamstrings. SL and J tracks combine both ideas. Longer track means more of you gets massaged; S-track chairs usually stretch you harder. The number before it (like 49") is the track's length.

Zero gravity recline

The chair reclines until your knees sit slightly above your heart, the posture NASA designed for astronauts at launch. Your weight spreads evenly across the chair, pressure comes off your spine, and the rollers press deeper without you tensing up. Most chairs offer two or three zero-gravity stages.

Zero wall / space-saving

A zero-wall chair slides forward as it reclines instead of tipping backward, so it can sit a few inches from your wall instead of two feet. The spec to check is the clearance number: 2" to 6" on the chairs we carry. If your room is tight, this matters more than almost any massage feature.

Airbag compression

Air cushions built into the arms, shoulders, hips, calves, and footrest inflate and squeeze, like a blood-pressure cuff. The rollers handle your back; the airbags handle everything the rollers can't reach. More airbags with independent zone control means the squeeze lands where you want it and skips where you don't.

Body scanning

Before the massage starts, the chair maps your height, shoulder position, and back curve, then adjusts the rollers to your body instead of an average person's. This is why two people can use the same chair and both get a massage that lands in the right spots.

Reflexology foot rollers

Spinning textured rollers under your soles that press the pressure points a foot massage therapist would work with thumbs. Paired with the footrest airbags squeezing the top of your feet, it is the feature people don't know they want until the first session. "Triple rollers" means three rollers per foot instead of one.

Heat therapy

Heating pads, usually at the lower back, warm the muscle before and during the massage so it loosens and deep pressure doesn't ache. Better chairs add heat zones at the calves or feet, or put the heat in the rollers themselves so warmth travels with the stroke.

Dual mechanism (Syner-D)

Most chairs have one roller unit that travels your whole back. A dual-mechanism chair has two separate units working at the same time: one on your neck and upper back, another on your lower back and glutes. It feels like two therapists working on you at once, and it is the main thing you pay for in flagship chairs like the Kyota Nokori and Infinity Luminary.

Certified Pre-Owned: Grade A vs Grade B

Every CPO chair passes the factory's 37-point inspection by factory-trained technicians before it ships. Grade A: perfect working order, no major cosmetic flaws; many are showroom units or returns that were barely used. Grade B: works exactly the same, but carries a visible scuff or scratch, and is priced lower for it. Both are the same chair inside. Ask us for photos of the exact unit before you buy.

Common questions before you buy

Delivery, returns, and the practical stuff.

What are my delivery options, and what do they cost?

Three tiers, and you pick at checkout. Free curbside (included): the freight carrier brings the chair to your driveway or entryway in its factory boxes; you bring it inside. Threshold, $99: the carrier places it just inside your doorway. White glove, $199: a two-person team carries it to the room you choose (stairs included), unpacks it, assembles it, and removes the packaging. If nobody strong is around to help, white glove is worth it; chairs weigh 200+ lbs boxed.

How long does delivery take?

Curbside and threshold average 7-10 business days from order. White glove runs 10-14 business days because the chair routes through an installation terminal first, and the team calls you to schedule a window. Tracking is emailed within 24 hours of your chair leaving the warehouse.

Is assembly hard?

No special tools or skills. Assembly is attaching the arms, ottoman, and air hoses with the included instructions, and takes 30-90 minutes. If you'd rather not, white glove delivery includes full assembly. And if you get stuck, call us at 806-547-1998 and we'll walk you through it.

What if I don't like the chair?

You have a 60-day money-back guarantee from the purchase date, with no restocking fees. You pay only return shipping, capped at the lesser of the actual freight cost or a $250 flat fee. Full details on our Shipping & Returns page.

Is the warranty included?

Yes. Every new chair carries its full manufacturer warranty, and Certified Pre-Owned chairs are backed by warranty as well — we're an authorized dealer, so coverage is the real thing, registered to you.

Can I pay monthly?

Yes — Affirm and Shop Pay Installments, with 0% APR for qualified buyers and terms up to 36 months. Checking your rate takes about a minute and doesn't affect your credit score. See real monthly examples on our Financing page.

Anything else? Call or text a chair expert: 806-547-1998