How many springs does the ACON X actually have?

ACON's own current US product page doesn't agree with itself. The specifications table lists 120 X Performance springs, described as including 2 spares — but a separate section of the same page states 118 springs. Since 120 minus 2 spares equals 118, the two figures may describe the same hardware counted two different ways (120 shipped, 118 installed), but ACON's page never says so explicitly, and a Decathlon UK listing for the identical trampoline independently states 120. We'd rather disclose the live discrepancy than guess at which number describes what's actually on the frame — confirm with ACON support before assuming either figure if an exact spring count matters to you.

What is the weight limit on the ACON X 17ft?

It depends on the height setting, which is the X's whole selling point. At the 2 ft toddler height, ACON's own CE/ASTM-certified rating is 80 lb per jumper. At the 3.5 ft standard height, it rises to 260 lb. At the 4 ft performance height — which requires the separately-sold Height Kit — it reaches 330 lb, matching the per-jumper rating on ACON's standard Air line. Separately, ACON's product page also lists a 3,000 lb stationary weight limit for the trampoline as a whole, a figure roughly double the 1,650 lb static rating on ACON's Air 15 and Air 16 models.

Does the ACON X come with the Height Kit included?

No. The base $3,999 price gets you the 2 ft and 3.5 ft settings only. The Height Kit that unlocks the 4 ft performance height and the 330 lb weight rating is sold separately, and ACON's own listings are inconsistent on price across regions — roughly $129 to $199 depending on which ACON storefront you check. Confirm the current US add-on price before budgeting for the full three-height experience; it isn't bundled into the headline price.

How does the ACON X warranty compare to ACON's Air line?

The headline terms match — both carry a 10-year frame warranty. But the ACON X's warranty breaks down further than most buyers expect: 10 years on the frame itself but only 2 years on frame hardware (bolts, fittings), 5 years on the springs, 5 years on the jumping mat, 2 years on other mat components and the safety pad, and just 1 year on the ladder and the enclosure. A 1- or 3-year Extended Warranty add-on covers the mat, springs, and frame beyond the standard terms. Read past the '10-year frame' headline — most of what touches a jumper directly (enclosure, ladder, mat hardware) is covered for 1-2 years, not 10.

Is the ACON X worth $3,999 over the cheaper ACON Air 16 Sport HD?

Only if you'll actually use more than one height setting over the trampoline's life. The Air 16 Sport HD ($2,499) uses the same brand of steel-spring engineering and carries a matching 10-year frame warranty, with no single stated per-jumper weight cap. The $1,500 premium on the X buys exactly one thing: the ability to drop the trampoline to 2 ft for a toddler and raise it to 4 ft for a teenager years later, on the same frame. If your household's jumpers are already past toddler age, the Air 16 Sport HD delivers the same bounce class for less. See our best ACON trampoline guide for the full lineup.

ACON X 17ft Trampoline Review 2026: Is the Height-Adjustable Flagship Worth $3,999?

Quick Answer: The ACON X 17ft is ACON’s flagship trampoline at $3,999 direct from ACON, built around three adjustable heights — 2 ft (80 lb per jumper), 3.5 ft (260 lb), and 4 ft with the separately-sold Height Kit (330 lb) — on a frame ACON rates to a 3,000 lb stationary weight limit. It carries ACON’s standard 10-year frame warranty, though coverage drops to 1-2 years on the enclosure, ladder, and mat hardware once you read past the headline figure. The one thing to know before paying flagship money: ACON’s own current product page lists two different spring counts for the same trampoline (120 in the specs table, 118 elsewhere on the same page), and we’re disclosing that discrepancy rather than picking whichever number looks better.

The ACON X already shows up across this site as the flagship pick in our best ACON trampoline guide and our ACON vs. Springfree comparison, but it had never had its own dedicated review. We went back to ACON’s own current US product listing to verify every spec line by line — and found that the brand’s own page doesn’t agree with itself on one of them.

ACON X 17ft — the numbers that matter

Spec	ACON X 17ft	Notes
Price	$3,999	Direct from us.acon24.com, confirmed current
Weight limit — 2 ft toddler	80 lb/jumper	CE/ASTM certified
Weight limit — 3.5 ft standard	260 lb/jumper	Default setting, no extra kit
Weight limit — 4 ft performance	330 lb/jumper	Requires separately-sold Height Kit
Stationary weight limit	3,000 lb	Whole-trampoline figure, per ACON
Springs	118 or 120 (ACON's page disagrees)	X Performance Springs, 9.6 x 1.2 in
Frame warranty	10 years	Frame hardware itself only 2 years
Product weight	661 lb	Ships from Minnesota, free to lower 48

By the numbers

120 vs. 118 — the two conflicting spring counts that appear on ACON’s own current US product page for the exact same ACON X 17ft listing, per our direct check of us.acon24.com.
$1,500 is the price gap between the ACON X ($3,999) and ACON’s own Air 16 Sport HD ($2,499) — both backed by a 10-year frame warranty, per ACON.
3 heights, 1 frame — 2 ft, 3.5 ft, and 4 ft (with the Height Kit), which ACON states makes the X the only garden trampoline in the world with adjustable jump height.
1 vs. 10 years — the gap between the enclosure/ladder warranty (1 year) and the headline frame warranty (10 years) on the same trampoline, per ACON’s own published terms.

The spring-count discrepancy, explained

Here’s exactly what ACON’s own product page shows: the specifications table lists 120 X Performance springs, described as including 2 spares, while a separate section of the identical listing states 118 springs. Subtract the 2 spares from 120 and you land on 118 — so it’s plausible both numbers describe the same box of hardware, just counted two different ways (120 total shipped vs. 118 actually mounted on the frame). But ACON’s page never makes that connection explicit, so it reads as a straightforward contradiction rather than a documented spares policy. A Decathlon UK listing for what appears to be the same trampoline independently states 120, which doesn’t resolve the question either way. If an exact spring count matters to you — for a replacement-parts order, for instance — confirm directly with ACON support rather than trusting either figure on the page alone.

ACON X 17ft Trampoline with Net and Ladder

ACON's flagship · $3,999 · 3 adjustable heights

17 x 9.7 ft rectangular frame, adjustable between 2 ft, 3.5 ft, and 4 ft (Height Kit sold separately for the top setting).
Weight ratings scale with height: 80 lb (2 ft), 260 lb (3.5 ft), 330 lb (4 ft) — plus a 3,000 lb stationary weight limit for the trampoline overall.
X Performance Springs (9.6 x 1.2 in); ACON's own page lists the count as either 118 or 120 depending on which section you read.
10-year frame warranty (2 years on frame hardware), 5 years on springs and jumping mat, 2 years on other mat components and the safety pad, 1 year on ladder and enclosure.
661 lb total product weight; free shipping to the lower 48, ships from Minnesota. Optional paid assembly available through ACON's Handy Buddy partner, priced by zip code and model.

Is the extra $1,500 over the Air 16 Sport HD worth it?

ACON’s own Air 16 Sport HD ($2,499) uses the same caliber of steel-spring engineering, carries a matching 10-year frame warranty, and states no single per-jumper weight cap at all. The ACON X’s $1,500 premium doesn’t buy a stronger bounce or a longer warranty on the parts that matter most — it buys exactly one thing: the ability to lower the trampoline to 2 ft for a toddler and raise it to 4 ft for a teenager, years apart, on the same frame. That’s a genuinely unique feature; per ACON, no other garden trampoline on the market offers adjustable jump height at all. But it’s a feature with a real asterisk: the 330 lb top-tier weight rating requires buying the Height Kit separately, so the $3,999 sticker price doesn’t actually get a household to the X’s full advertised capability on day one.

The bottom line

The ACON X 17ft ($3,999) is the right trampoline for a household planning a full decade of use across very different ages and weights — its three height settings are a genuine, ACON-stated industry first. For a household whose jumpers are already past toddler age, the cheaper Air 16 Sport HD ($2,499) delivers the same 10-year frame warranty and no stated per-jumper cap for $1,500 less; see our best ACON trampoline guide for the full lineup comparison. Before buying either, confirm the Height Kit price directly with ACON if the top-tier 330 lb/4 ft setting matters to you, and don’t be surprised if ACON’s own paperwork quotes 118 or 120 springs depending on which section you’re reading — we checked, and it isn’t you misreading it. No CPSC recall exists for ACON trampolines as of this review. Weighing ACON against Springfree’s springless design instead? See our ACON vs. Springfree comparison.