X-Yachts Performance Sailboats

X-Yachts X4.3 Review, Specs and Price

A Danish 43-footer with an epoxy hull and a steel grid, built for owners who want to cruise in comfort and still win on Saturday.

2016 to present In production Updated

X Yachts X4.3 sailing upwind under a dark mainsail and white jib on a blue sea
Photo: X-Yachts, courtesy of the builder, source
Length
43.4 ft13.24 m
Beam
13.1 ft3.99 m
Draft
7.3 ft2.2 m
Cabins
2 or 3
Used price
$350K to $700K
On this page
  1. Overview
  2. Where the X4.3 fits in the Pure X line
  3. Epoxy, foam and the famous steel grid
  4. On Fishers Island Sound with SAIL
  5. A cockpit designed for both racing and lunch
  6. Four interior layouts in Nordic oak
  7. Engine, tankage and the systems that matter
  8. Buying a MkI or paying up for a MkII
  9. What a 43-foot X-Yacht costs to run
  10. Specifications
  11. Price and value
  12. Strengths and weaknesses
  13. Used buyer checklist
  14. Rivals
  15. Our verdict
  16. FAQ

The X4.3 is X-Yachts' 43-foot Pure X performance cruiser, built in Denmark since 2016 and re-engineered as the MkII with a new hull. Epoxy infusion, steel grid, three draft options and real pace.

Best for
  • Couples who cruise and race
  • Owners stepping up from a J/109 or similar
  • Club racing with full accommodation
  • Fast coastal and offshore passages

Where the X4.3 fits in the Pure X line

X-Yachts built its reputation on boats that win races and still feel like proper yachts below. The Pure X range, which includes the X4.0, X4.3, X4.6, X4.9 and X5.6, is the company's attempt to tilt that balance toward cruising without giving up the sailing feel. The X4.3 is the middle child and, for many buyers, the sweet spot: long enough for real passages and comfortable accommodation, small enough to sail as a couple.

The X4.3 name covers two distinct generations. The MkI was built from 2016 to 2021, according to X-Yachts' own archive. The current MkII is, as SAIL Magazine put it, an entirely new design with new tooling: a beamier aft section with lifted soft chines, a larger cockpit with a higher sole, a longer integral bowsprit and a taller mast. If you are comparing listings, the generation is the first thing to confirm.

X-Yachts X4.3 by the numbers

LOA 43' 5" / 13.23 mBeam 13' 1" / 3.99 mBow
Plan view drawn to scale from the published length and beam.
Sail area to displacement
22.8Plenty of sail for the weight, the boat should feel lively in light air.
Displacement to length
180Light displacement for its length, quick but sensitive to added cruising weight.
Theoretical hull speed
8.2 knThe practical top speed of a displacement monohull under normal sailing, based on waterline length.
Ballast ratio
39%A typical ballast ratio for a cruising monohull.
Capsize screening
1.90Below 2.0, the traditional threshold for offshore suitability.
Motion comfort ratio
26.7Moderate motion comfort, typical of modern cruisers.
Length to beam ratio
3.32 : 1Moderate proportions.

Length compared with the 69 performance sailboats we cover

12 ft56 ft

Epoxy, foam and the famous steel grid

X-Yachts builds the X4.3 hull from vacuum-infused, post-cured epoxy with a foam core and fully bonded structural bulkheads. Underneath the interior sits the galvanized steel grid that has been an X-Yachts signature for decades. It carries the loads from the keel and the rig into one frame, which keeps the hull stiff and protects it from the flexing that can crack production boats after a hard grounding.

The keel is a cast iron fin with a lead bulb that is both bolted and glued to it. Three drafts are offered: 6 feet 1 inch for shoal cruising grounds, 7 feet 3 inches as standard, and 8 feet 2 inches for buyers who race. Ballast on the standard keel is 8,157 pounds, close to 40 percent of the 20,723 pound light displacement, which gives the boat its notably stiff feel.

  • Displacement to length ratio about 180
  • Sail area to displacement ratio about 22.8
  • Length to beam ratio about 3.2
  • Ballast ratio close to 40 percent
X Yachts X4.3 heeling under dark sails with crew at the twin wheels and a Danish ensign
X Yachts X4.3 heeling under dark sails with crew at the twin wheels and a Danish ensign. Photo: X-Yachts, courtesy of the builder, source

On Fishers Island Sound with SAIL

SAIL tested the MkII X4.3 on Fishers Island Sound in a northwest breeze and the numbers back up the reputation. Close-hauled at 30 degrees apparent the boat made more than 7 knots, and when fully powered at 32 degrees it held over 8. On a close reach it approached 9 knots. Even in about 8 knots of wind on a broad reach under working sails it kept moving at around 6 knots.

That is genuine performance for a cruising boat with a full interior. The X4.3 points high, accelerates quickly out of tacks and has the light, precise helm X-Yachts are known for. The self-tacking jib option makes short-handed upwind work almost effortless, while the overlapping genoa and an asymmetric on the integral bowsprit give racers plenty of horsepower.

A cockpit designed for both racing and lunch

The MkII's larger cockpit and higher sole are the biggest changes on deck. The helm area is laid out for the trimmer and driver to work close together, while guests sit forward under an optional retractable dodger. A vacuum-applied teak cockpit is standard, and side decks can be finished in teak or synthetic decking.

For couples, the self-tacking jib option and a sensible line layout keep short-handed sailing simple. Racers will add a more complex sheet setup and a carbon mast, both available from the factory.

Four interior layouts in Nordic oak

X-Yachts offers four layouts. Owners can choose between one or two aft cabins and one or two heads, with the option of a forward head for the owner's cabin. A spacious forward cabin, a saloon with a dining table and a galley with counter space on both sides are common to all versions.

The default finish is Nordic oak veneer with a laminated teak sole, a lighter look than older X-Yachts teak interiors. Joinery quality is excellent. For a couple who sails with occasional guests, the two-cabin, two-head layout gives the best balance of storage and privacy. Charter or family buyers will prefer three cabins.

Engine, tankage and the systems that matter

Power comes from a 45 hp Yanmar diesel with a saildrive. Tankage is 53 gallons of fuel and 90 gallons of water, which is fine for coastal cruising and short passages but light for extended remote cruising. Owners heading offshore usually add a watermaker.

Saildrive maintenance is the main ongoing mechanical item, including the diaphragm seal replacement schedule and corrosion protection. Electrical systems are modern, and lithium house banks with solar on the stern rail are popular upgrades.

Buying a MkI or paying up for a MkII

The MkI is the value buy. It shares the X-Yachts build quality and sailing feel, and spec databases list it at about 8,850 kilograms with 3,800 kilograms of ballast, lighter than the MkII. It is narrower aft, so the cockpit and aft cabins are smaller, and the rig is shorter, with Blue Water Sailing listing a 60-foot-10-inch air draft against 66 feet 6 inches for the MkII. Early boats were sold simply as the X4 before the range was renamed. For a buyer who mainly wants a fast, well-built cruiser, it is a very good boat.

The MkII is the better overall yacht, especially in a breeze and for anyone who entertains in the cockpit. Its wider stern adds form stability and interior volume, and the new rudder design shared across the Pure X range gives more grip. Expect to pay a meaningful premium, and expect it to retain value better.

What a 43-foot X-Yacht costs to run

Annual costs for an X4.3 generally run $25,000 to $50,000, covering a 43-foot slip, insurance, haul-out, bottom paint, saildrive service and sails. Racing owners spend more on sail replacement and crew. Sails are the big variable: laminate or membrane inventories wear out much faster than cruising Dacron.

Resale is a strength. X-Yachts have a loyal following and a well-organized dealer network in the US and Europe, and good X4.3s sell quickly. Buying from Europe and importing is common, so factor in transport and duty when comparing prices.

X-Yachts X4.3 specifications

Length overall43.4 ft13.24 m
Waterline length37.2 ft11.33 m
Beam13.1 ft3.99 m
Draft7.3 ft2.2 m
Air draft66.5 ft20.27 m
Displacement20,723 lbs9,4 kg
Ballast8,157 lbs3,7 kg
Sail area1,076 sq ft100 m²
Fuel capacity53 gal2 L
Fresh water9 gal34 L
Cabins2 or 3
Berths4 to 8
Heads1 or 2
Standard enginesYanmar 45 hp diesel with saildrive
Maximum power45 hp
Hull typePerformance cruiser hull with soft aft chines
KeelCast iron fin with bolted and bonded lead bulb, shallow 6 ft 1 in, standard 7 ft 3 in or deep 8 ft 2 in
RigSloop with overlapping or self-tacking jib, aluminum mast standard, carbon optional
Hull constructionVacuum-infused, post-cured epoxy and foam sandwich with galvanized steel grid
CE design categoryA
BuilderX-Yachts, Denmark
Naval architectX-Yachts Design Team
Other design creditsNiels Jeppesen (head of X-Yachts design)
Production2016 to present
StatusIn production

Figures come from builder documentation and independent tests where available. Displacement is usually quoted light, so a loaded cruising boat will weigh more. Compare these specs with another model.

Performance data

Point of sailApparent wind angleBoat speed (kn)
Close-hauled30 degrees7+
Close-hauled, fully powered32 degrees8+
Close reachNot statedapproaching 9
Broad reach in about 8 knots of windNot statedabout 6

SAIL Magazine sea trial of the X4.3 MkII on Fishers Island Sound in a northwest breeze, working sails.

How much does a X-Yachts X4.3 cost?

New, typical sail-away$650K to $900K
Used, typical asking$350K to $700K
Yearly running costs$25K to $50K

SAIL's MkII test boat was priced at about $595,000 and Sailing Magazine estimated $650,000 sail-away, so 2026 boats with a carbon mast, teak decks, the deep keel and a racing sail wardrobe can approach $900,000. On the used market the hull generation matters most. MkI boats from 2016 to 2021, which Blue Water Sailing priced at $310,000 base and $450,000 as tested in 2017, sit at the lower end, while MkII boats with the new hull hold much closer to new money.

Estimated used asking prices by model year, US market, 2026
$400K$600K20172017, $340,000 to $430,00020182018, $360,000 to $450,00020192019, $380,000 to $480,00020212021, $420,000 to $540,00020232023, $540,000 to $660,00020252025, $600,000 to $720,000

Estimate your yearly cost

A planning estimate using common rules of thumb: insurance near 1.5 percent of value, maintenance near 3 percent, haul out and bottom paint by length. Your marina, region and use will move these numbers. Open the full cost calculator.

Versions and options

X4.3 MkI
Built 2016 to 2021 per X-Yachts' archive and originally sold as the X4. Narrower aft and lighter (about 19,500 lb), with a smaller cockpit and lower rig.
X4.3 MkII
Introduced after November 2021 test sailing. New hull with a wider transom and lifted soft chines, larger cockpit, longer bowsprit, taller mast and new rudder.
Keel options
Shallow 6 ft 1 in, standard 7 ft 3 in or deep 8 ft 2 in.
Rig options
Aluminum mast standard with carbon optional, and a choice of self-tacking or overlapping jib.

X-Yachts X4.3 timeline

  1. 2016X-Yachts launches the Pure X range with the X6, and production of the first 43-footer, originally sold as the X4, begins per X-Yachts' archive
  2. 2017Blue Water Sailing tests the X4 at $310,000 base and $450,000 as tested
  3. 2021MkI production ends and the all-new X4.3 MkII starts test sailing in November
  4. 2023SAIL tests the MkII at $595,000 as tested and names it a Top 10 Best Boats nominee
  5. 2026The X4.3 MkII remains part of the Pure X range

Strengths and weaknesses

What owners like

  • Excellent upwind performance and helm feel
  • Stiff, very strong epoxy hull with steel grid
  • Four interior layouts with high-quality joinery
  • Three keel options including a 6 ft 1 in shoal version
  • Strong resale and loyal owner base
  • MkII cockpit is large and comfortable

What to weigh up

  • Expensive compared with mainstream 43-footers
  • Modest fuel and water capacity for long-distance cruising
  • Saildrive adds a maintenance item
  • Performance sails are costly to replace
  • Deep keel limits cruising grounds

Used X-Yachts X4.3 buyer checklist

Take this list to a viewing. Your ticks are saved in this browser so you can come back to it.

Always commission an independent marine survey and an engine survey before you buy. How a marine survey works.

Rivals to consider

Dehler 42

A German performance cruiser with similar intent and generally lower pricing.

Compare side by side

Arcona 435

Swedish performance cruiser with comparable build quality and a slightly more cruising-oriented interior.

Grand Soleil 44

Italian racer-cruiser with a strong racing program and Italian styling.

Swan 48

A bigger, more luxurious step up in price and size for those who want Frers lines and Nautor finish.

Compare side by side

Our verdict on the X-Yachts X4.3

The X4.3 is about as complete as a 43-foot performance cruiser gets. It sails with the precision of a race boat, rides on one of the strongest structures in production sailing and carries an interior that will satisfy a couple for weeks at a time. The MkII is clearly the better yacht, but a sorted MkI is a smart way into the brand. If you want a boat that can win a regatta on Saturday and take you cruising on Monday, the X4.3 deserves to be on your short list.

X-Yachts X4.3 questions answered

How much does an X4.3 cost?

A new X4.3 MkII typically costs $650,000 to $900,000 depending on options. Used boats range from about $350,000 for early MkI hulls to $700,000 for recent MkII boats.

What is the difference between the X4.3 MkI and MkII?

The MkII has a new hull with a wider transom and soft chines, a larger cockpit, longer bowsprit, taller mast and a new rudder.

How fast is the X4.3?

SAIL recorded more than 8 knots upwind and close to 9 knots on a close reach in its test of the MkII.

What draft options does the X4.3 have?

Shallow 6 feet 1 inch, standard 7 feet 3 inches and deep 8 feet 2 inches.

Who builds the X4.3?

X-Yachts of Denmark, using epoxy infusion and its signature galvanized steel grid.

Is the X4.3 related to the Regal LX43?

No. Regal's LX models are American powerboats, while the X4.3 is a 43-foot Danish sailing yacht.

More performance sailboats to explore