J-Boats J/124 Sailboats for Sale

R. Johnstone·2002 – 2007·~35 hulls·J Boats
J-Boats J/124 drawingBuilder drawing
Hull Type
Monohull · bulb
Rig
Fractional Sloop
LOA
40.7' · 12.41 m
Disp.
12,600 lbs · 5,715 kg
First year
2002

The J/124 arrived as J/Boats' bold declaration that a serious performance sailboat could also be a genuinely comfortable weekender. Rod Johnstone scaled the DNA of the beloved J/100 daysailer up to forty feet, aiming for a boat that could extrapolate the daysailer idea to forty feet LOA without sacrificing the lightness, stiffness, or aesthetic clarity that made the smaller boat a cult favorite. The result is a sloop that wears a modestly aggressive look without sacrificing approachability — a boat equally comfortable with a shorthanded couple heading out for the weekend or a nontechnical crew of ten toting hors d'oeuvres, two guitars, and a banjo.

Market snapshot

Median asking · 12 mo
$ 209,000
Asking price · 15 listings
Recent listings · 90 d
8
15 tracked · 12 mo
3-month price trend
+0.5%
vs. 12-mo median
Countries with listings
2
United States (92.9%) · Australia (7.1%)

Recent Listings

12 for sale · showing 10 newest

J-Boats J/124 Buyer's Guide

The J/124 sits at an interesting crossroads in the used performance-cruiser market: built during a short production window from roughly the early to mid-2000s, it was conceived as J/Boats' stretch of the J/100 daysailer concept into genuine weekender territory, and that original design brief still shapes what you find when shopping one secondhand today. Rod Johnstone aimed at a boat that could be raced, daysailed hard, and taken on coastal passages without demanding a professional crew, and the used examples that have circulated since bear out that intent. The J/124 is not a blue-water passage maker — tankage is modest, the galley compact, and headroom touches six feet rather than exceeding it — but for the buyer after an exhilarating coastal performer with enough shelter and bunks for a long weekend, it is hard to fault the package.

What distinguishes the J/124 in the brokerage context is its technical specification. The Hall Spars carbon rig and carbon-fiber rudder are not afterthoughts; they are central to the boat's performance character, and their condition warrants close attention before any offer. A carbon spar in good order is a genuine asset, but the inspection stakes are higher than with an aluminum stick, and the cost of replacement is proportionate. The boat carries over 750 square feet of working sail area on a relatively light displacement for a forty-foot hull, a combination that produces a sail-area-to-displacement ratio rewarding a buyer willing to keep the sailplan well maintained.

Layouts on the Used Market

The J/124 offers a single primary accommodation arrangement, and the interior layout has remained consistent across the production run. Entering below, you find a comfortable saloon with long straight settees that work as seating by day and berths by night, a modest galley to one side, and a stand-up chart table that owners who do any coastal navigation appreciate. An aft head to starboard is set apart from the saloon, and modest forward and aft cabins complete the sleeping arrangement, giving the boat three functional berths overall. Storage is concentrated in two large aft lazarettes and a notably generous starboard cockpit locker that can be accessed from the head — useful for organizing wet gear and safety equipment without cluttering the living space. The cockpit itself is the boat's social center: oversized by the standards of a pure racer, with backrests deep enough for genuine comfort and seats long enough to sleep on in fine weather, it was clearly designed for the owner who entertains as much as races.

Equipment and Common Upgrades

The well-equipped J/124 on the brokerage market commonly arrives with an autopilot, chartplotter, and a shorthanded sailing setup already in place. Spinnaker and asymmetric spinnaker inventories are frequently present, reflecting the racing and performance-daysailing use most examples have seen. A dodger is a near-standard addition — the factory acknowledged the need for all-weather protection, and most owners have kept or improved upon it. Electric winches appear on a meaningful portion of listings and represent a practical upgrade for a crew of two managing the sail area this boat carries.

Slightly less universal but frequently seen are heating systems, hot water, a cockpit shower, and radar. These additions suggest previous owners who have used the boat for extended coastal cruising rather than purely for racing. The Yanmar forty-horsepower diesel is standard across the fleet and has a solid reputation for reliability; its condition and service history are worth scrutinizing regardless.

Owner upgrades that appear occasionally rather than routinely include air conditioning, an inverter, a self-tacking jib boom (which J/Boats offered as a factory option and which simplifies shorthanded tacking considerably), a bimini, a swim platform, teak decks, and AIS. A self-tacking jib setup is a particularly worthwhile find for a buyer who expects to sail frequently with a small crew.

What to Inspect

The carbon components deserve priority attention. The J/124 was built with a Hall Spars carbon rig, and any carbon spar should be surveyed for delamination, impact damage at spreader roots, and the integrity of the mast step and partners. The carbon rudder stock warrants the same scrutiny. Because these parts are performance-critical and expensive to replace, any signs of repair or structural irregularity should prompt a specialist assessment rather than a contingent discount negotiation.

The split mainsheet system, which leads under the deck to winches just forward of the helm, involves hardware routing that should be inspected for chafe and wear at any points where the sheet passes through or around deck fittings. Deck-penetrating hardware on a used performance boat is a common source of slow water ingress; check the mast base, chainplates, and any add-on deck fittings carefully. Given the boat's modest water and fuel tankage, any expansion of cruising range through added tankage or watermakers is an owner modification worth verifying was done cleanly.

The bulb keel is a structural consideration. Inspect the keel-to-hull joint for any cracking or weeping at the joint line, and confirm the keel bolts have been inspected at a recent haulout. The high ballast-to-displacement ratio that gives this boat its stiffness also concentrates significant weight at the bottom of the fin; any evidence of impact or grounding is worth probing carefully. Below the waterline generally, look for osmotic blistering consistent with the boat's age and storage history.

Availability and Buyer's Takeaway

The J/124 circulates most actively in the United States market, where the bulk of the fleet was delivered new, with occasional examples appearing in Australia. It is a relatively short-production model with a modest total build number, meaning the secondhand market is thin — patient buyers are rewarded when examples come up, but the pool is not so deep that you can afford to be cavalier about a boat's condition expecting another to appear shortly.

For the right buyer, the J/124 offers genuine performance credentials, a sociable cockpit, and enough interior comfort for coastwise weekending in a package that remains rare enough to hold its appeal. Before committing, work through the following:

  • Obtain a full survey with specific attention to the carbon spar and rudder stock
  • Confirm keel joint integrity and review haulout records for bolt inspection
  • Inspect all deck hardware penetrations for bedding and signs of water ingress
  • Verify the mainsheet run under-deck for chafe and hardware condition
  • Review engine service logs and confirm impeller, zincs, and heat exchanger history
  • Check spinnaker and headsail inventory for condition and completeness
  • If a self-tacking jib boom is not fitted, budget for it as a meaningful shorthanded upgrade
  • Confirm AIS, radar, and nav electronics versions are serviceable or budget for updates

Where they're listed

J-Boats J/124 listings appear across 2 countries. United States has the most listings with 13 (92.9%), followed by Australia.

Median ask by country
USD · past 12 months
Share of listings
Count · past 12 months

Country view

14 listings · 2 countries
CountryMedian askListings · 12 moActive · 90 dShare
United States$ 209,00013692.9%
Australia$ 2,080117.1%

Comparable models

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Similar boats to compare

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J Boats J/124You are here$ 209,000158
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Frequently asked questions

01How much does a used J-Boats J/124 cost?+
The median asking price for a used J-Boats J/124 over the past 12 months is $209,000. Prices vary by condition, year, equipment, and location.
02How many J-Boats J/124 sailboats are for sale?+
8 J-Boats J/124 listings have gone live in the last 90 days, and 15 have been tracked across the past 12 months.
03Are J-Boats J/124 prices going up or down?+
The median asking price for the J-Boats J/124 is up 0.5% over the last 3 months compared with the 12-month median.
04Where are J-Boats J/124 sailboats for sale?+
The top markets for used J-Boats J/124 listings over the past 12 months are United States (92.9%), Australia (7.1%).
05What should I look at instead of a J-Boats J/124?+
Comparable models include J-Boats J/120, J Boats J/105, J-Boats J/100. Use the comparison table above to check pricing and availability.