KARVER NEW PRODUCTS
At Karver, we release new products at a fairly rapid pace. It’s not always easy to keep up.
You’re finally going to be up to date… Just follow the guide. Year after year.
2026 - 2027
We have just acquired the Alphalock patents designed by Eric Hall. This is a significant development that allows us to add halyard bullet locks —which are very popular in English-speaking countries and aboard superyachts—to our already comprehensive line of locks.
Alphalock’s proven technology stands out for its simplicity and reliability. The use of magnets reduces the number of parts, weight, and maintenance.
Halyard locks are used for front sails, but also in many other applications, such as reefs and tacks.
This same technology is also incorporated into mainsail’s automatic mast car locks.
The product line is available for applications with workloads ranging from 1.5 metric tons to over 60 metric tons.
The product pages are currently under construction… Stay tuned
Want even more? Here’s the KJTi35.
At the Mets equipment trade show in Amsterdam in 2025, a team from Imoca and another from Maxi 72 both asked us the same thing: to design a jammer capable of holding more than 3 tons while maintaining the same dimensions as the KJC25.
We’ve now done it with the KJTi35 (3.5T load capacity), but that meant we had to use wider jaws and a titanium body. It gives it a futuristic look that we really like.
Challenge accepted! Next on the list: the KJTi70 (7T SWL) in the dimensions of the KJC50.
Our long-time customers will no doubt recall that we previously worked on a line of blocks with built-in load sensors. This project is back on track thanks to our collaboration with Cyclops and under the Karver patent.
A prototype of the 5T is currently being tested under the name Smart Block. It is designed using our now-famous KBRC blocks (carbon/titanium/ceramic).
You’re finally going to find out what forces are at work in your blocks. Watch out! You might be surprised.
Stay tuned…
The first KGL40 and KGL60 V2 models have already been in service for several months. Customers are particularly impressed by how easy they are to use.
This is also true for Thomas Coville (skipper of the Ultim Sodebo), who recently equipped his family catamaran with our KGL60 and helped us finalize the last details.
Next Steps for the KGLs: We are beginning production of the adapter parts for our partner Antal’s cars, and we will soon begin manufacturing the largest model, the KGL80.
Testimonial from Thomas Coville: HERE
From offshore racing to superyachts, the KBRC has won over even the most demanding crews thanks to its rare balance of compactness, light weight, and low friction.
With the KBRCS, our carbon and titanium leasing block has been upgraded to be even easier to use: captive bearings that stay in place during disassembly, carbon flanges secured with screws for simple and secure installation, and a more modern and compact design—without compromising on strength. Its titanium roller bearing with ceramic balls ensures smooth rotation under heavy loads for precise adjustments.
The first models are already available. The rest of the KBRC lineup will transition to the new design in the coming months. The KBRCS is already installed on several IMOCA boats.
Welcome to the latest model in our range of anti-twist swivels : The KAT1.5 completes the range (working load: 1.5 – 3.0 – 4.5 T).
It is only 9 cm tall and weighs 170 gr. Like the other models, it is equipped with a low-friction bearing and shock protection.
It will fit perfectly on sailboats between 15 and 35 feet.
Our anti-twist swivels help reduce or eliminate problems with halyards that twist around themselves to the point of blocking the sails at the top of the mast.
The KJS family is growing with the arrival of the KJS6 and the KJS20
The KJS line is part of our 100% cruising lineup. It’s a line designed for shipyards and all recreational boaters—price-optimized, eco-designed, and firmly focused on user needs (reliability, durability, less effort, etc.). The KJS12, the first model in the line, won a Dame Award in 2024.
This is a powerful locking device equipped with two long, movable jaws. It can be controlled remotely.
KJS6 – Working load: 600 kg – Ropes from 5 to 10 mm
KJS12 – Working load: 1,200 kg – Ropes from 6 to 12 mm
KJS20 – Working load: 2,200 kg – Ropes from 10 to 18 mm
At the request of several shipyards, we have been working on a new version of our horn lock.
This device has only one purpose: to make life easier for recreational sailors by offering a system for automatically stowing the horn batten in the lazy bag without having to perform potentially dangerous acrobatic maneuvers.
The new KGL offers much less friction than its first version, it can be used with a single or 2-to-1 halyard, requires no special masthead installation, comes with a pin to lock the batten during long crossings, and will be available in various versions in the coming months to ensure compatibility with competing cars. It’ll always work best with Karver cars, but we’re not going to start being elitist!
KGL40 (35 to 45 feet): Available
KGL60 (45 to 65 feet): First units available
KGL80 (60 to 100 feet): Early 2027
Our KDSTi sheaves are little gems of performance. We use the high-load, low-friction bearings from our famous KBRC carbon blocks (titanium rollers and ceramic bearings). The sheave and flanges are made of titanium, ensuring a much longer service life than their aluminum counterparts (KDS). The KDSTi sheaves use the same sheaves mechanisms as our KBRC blocks.
The KDSTi-G control panels we now feature on our website are custom-made for our customers based on the dimensions they provided. If you don’t find what you’re looking for among the models we showcase, send us your specifications and we’ll bring them to life quickly.
Our KGL V2 gaff lock (shown above) works by applying tension to the halyard. Consequently, and to meet the needs of larger boats ranging from 60 to 200 feet, we have combined our mainsail hook with our gaff lock.
Available in automatic (Auto Lock) or manual versions in our KMS60, KMS80, and KMS100 series.
The headplate can be custom-made to suit any special project. The carriage bodies and hook areas are made of titanium to withstand extremely high loads.
The world is changing. After 15 years of loyal service, we’re retiring our cam cleat and replacing it with an eco-friendly, more affordable version that manages to combine an ultra-modern design with traditional materials (applause).
Of course, the KJ3 retains its technical advantages: jaws optimized to protect the lines and make it easier to set up or release the glider, as well as the four stainless-steel bearings that have made its reputation.
Family is important! We couldn’t possibly limit our 100% cruising blocks to just two models. The family is growing with the KBS15: a simple, modern design with the same versatility as its little sisters, the KBS5 and KBS10.
You have to hold it in your hands to realize that this block is likely to be a big hit with shipyards looking to reduce friction, as well as with sailors who will appreciate its wide sheave and fabric strap.
KB15 – Working load: 1,300 kg – Wide block with stainless steel balls – Max. rope diameter: 14 mm
In the coming weeks, the KBS15 will be available in versions for deck mounting (mast feet), a traditional shackle mount, and a cam-style deck plate.
Stay tuned…
And here they are… the Karver KTC40 reefing and genoa tracks!
Following in the footsteps of the KJS cleats and KBS blocks, the KTC line is made of mirror-polished cast stainless steel. It looks great!
The properties of stainless steel have allowed us to reduce the size of the components. Ultimately, the difference between an aluminum system and a stainless steel one is minimal.
In our quest for ease of use, we’ve equipped the carts with stainless steel ball bearings. The result: they glide smoothly.
Stay tuned to discover the different models in this new, 100% cruise-focused line over the coming months.
Did you know? Karver designed the mainsail track for Ineos during the 2021 America’s Cup using technology not too dissimilar from the KTC40.
>>> Product page under construction
We haven’t forgotten about offshore racing, which is constantly evolving to stay as close as possible to the teams. Although this applies to only a handful of sailors, we’d like to introduce our KFX16.0 structural furler system with an adjustable tack. It’s equipped with a new swivel featuring a highly optimized lashing eye to allow for a wide range of motion.
On an offshore racing sailboat, everything is designed to prevent the sails from stretching and to ensure shape stability that promotes performance. Because the sails and stays are very taut, a simple adjustment of just a few centimeters at the bottom is enough to optimize performance.
When you consider that only a few minutes separated the top two skippers in the last Vendée Globe, it’s easy to see why teams are interested in this adjustable-tack windvane.
Whether racing or cruising, the devil is in the details. Since the end of the Ocean Race in 2023, we’ve been refining the design of our lashing eyes to make them much rounder, thereby allowing for greater freedom of movement. This improvement has already been implemented in our racing products and will be introduced to our cruising products in the coming months.
Over the past 20 years, the KFH furling locks (used on 70% of the IMOCA fleet) has been updated five times. From the first version with fins (Karver patent) to this fifth, highly optimized version.
2025
The KJS12 is Karver’s first load-limiting device for medium-duty applications (with a working load rating of 600 kg to 2,000 kg).
It was designed to be installed on all cruising sailboats. It is a serious competitor to all other jammers on the market.
It rounds out our line of high-capacity ascenders (KJC)
The KJS12 won the prestigious Dame Award 2024 for innovation in the deck hardware category. Proof that this jammer is far from an ordinary one.
KBS blocks are our first blocks designed for the general public.
As with the KRS reefing furlers and KJS ascenders, the KBS blocks were designed with the following requirements in mind:
Products designed for the loads of the most common cruising sailboats
Prices that are well-controlled and competitive compared to our competitors
More and better than the rest, and the promise that our products embody our DNA
Eco-designed products to reduce their environmental impact.
