Harken Inc. is a globally renowned company specializing in high-performance sailing hardware and accessories, making it a staple in the world of yachting and boating. Established in 1967 by brothers Peter and Olaf Harken, the company has grown from a small garage operation in Wisconsin, USA, to an international powerhouse with facilities and offices in the United States, Italy, and the United Kingdom. Harken’s commitment to innovation and quality has earned it a reputation for producing some of the most reliable and efficient sailing equipment available on the market.

Harken's product range includes a wide array of items designed to enhance the performance and safety of any sailing vessel. From winches and Harken blocks to travelers, furling systems, and more, Harken products are crafted with meticulous attention to detail and are trusted by professional sailors and boating enthusiasts alike. The company’s dedication to using the finest materials and cutting-edge technology ensures that their products not only meet but often exceed industry standards, providing sailors with the confidence and reliability they need while out on the water.
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2646 Carbo Air Block is engineered for high-performance applications, including jib and mainsheet systems on dinghies and control lines on keelboats. With its cam and becket design, it combines strength and lightweight construction, offering a 60% increase in strength and 30% reduction in weight compared to classic blocks. It’s equipped with UV-stabilized nylon-resin sideplates and high-load ball bearings for smooth, low-friction operation. |
€ 156,95
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2649 Carbo Air Block offers a perfect blend of lightweight durability and superior performance. Being 60% stronger and 30% lighter than traditional blocks, it features high-strength nylon-resin sideplates packed with long-glass fibers. Smooth-spinning sheaves on high-load ball bearings ensure low-friction operation, while UV stabilization guarantees durability in harsh marine environments. Perfect for mainsheet systems, control lines, and more. |
€ 59,33
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2650 Single Fixed Carbo Air Block is designed for efficient sheeting systems on small boats and trimline operations on larger vessels. With a maximum line capacity of 10 mm, it ensures smooth functionality in various sailing scenarios. Offering a safe workload of 220 kg and a breaking strength of 735 kg, this lightweight block (40 grams) is durable and reliable under pressure. |
€ 37,58
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2652 Single Stand-Up Carbo Air Block 40 mm is ideal for both small boat sheeting systems and large vessel trim lines. With a maximum line diameter of 10 mm, this block ensures optimal performance and seamless operation. Boasting a safe workload of 220 kg and a breaking strength of 735 kg, it combines strength with a lightweight design of just 48 grams. |
€ 50,11
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2659 Carbo Air Block is a 40 mm single fixed 90-degree block designed for 10 mm ropes. Ideal for small boat sheeting systems and larger vessel trim lines, it offers a safe workload of 220 kg and a breaking strength of 735 kg, all while weighing just 44 grams for a lightweight yet robust solution. |
€ 51,29
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2156 40 mm Pivoting Lead Block with Cam-Matic Cleat is designed for halyard controls on larger keelboats and as “headknockers” on dinghies and beachcats. Offering a safe workload of 136 kg and a breaking strength of 430 kg, this lightweight 186-gram block ensures reliable performance in both small and large boat sheeting systems. Its high-strength construction and identical hole spacing to Classic models make upgrades easy. |
€ 107,78
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2157 Carbo 40 mm Pivoting Lead Block with Carbo-Cam Cleat is a versatile, high-strength solution for halyard controls on larger keelboats and direct sheeting from the boom on dinghies and beachcats. Featuring reversible cams for flexible cleating options, this lightweight block supports lines up to 10 mm, offering a safe workload of 91 kg and a breaking strength of 430 kg. |
€ 104
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2638 Double Carbo Air Block 40 mm is a high-performance block designed for ropes up to 10 mm in diameter. Offering a working load of 440 kg and a breaking strength of 1080 kg, this lightweight 86-gram block combines durability and efficiency for various sailing tasks. |
€ 104
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2639 Carbo Air Double Block 40 mm with Becket is designed for ropes up to 10 mm. This lightweight block, weighing just 90 grams, features a working load of 440 kg and a breaking strength of 1080 kg. It offers smooth operation with ball bearings and includes a swivel for added flexibility, making it ideal for various sailing applications. |
€ 112,51
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2640 Carbo Triple Air Block is a 40 mm block designed for ropes up to 10 mm. With a working load of 660 kg and a breaking strength of 1383 kg, this lightweight block (118 grams) provides durability and reliable performance for a variety of rigging tasks. |
€ 171,13
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2641 Triple Carbo Air Block with Becket is a high-performance block designed for main, jib, and spinnaker sheets on sportboats and dinghies. With a 40 mm sheave, it features a lightweight composite construction, UV-stabilized components, and a working load of 660 kg for reliable performance in challenging conditions. |
€ 178,69
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2642 Double Fixed Carbo Air Block is a high-performance block designed for ropes up to 10 mm. Offering 60% more strength and 30% less weight compared to classic blocks, it’s ideal for jib and mainsheet systems on dinghies and control lines on small keelboats. |
€ 86,27
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2643 Double Fixed Carbo Air Block with Becket is a strong, lightweight block designed for high-performance dinghies and small keelboats. With a high strength-to-weight ratio and UV-stabilized components, it ensures smooth operation in various sailing systems. |
€ 93,60
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2647 Carbo Triple Block with Swivel and Cam Cleat offers reliable performance with a 40 mm sheave diameter, capable of handling high working loads. Its lightweight, durable design ensures smooth operation and reduced friction for efficient trimming. |
€ 264,73
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2648 Triple Carbo Air Block is a lightweight, durable solution designed for 10 mm ropes. Offering high working loads and low-friction operation, it’s the perfect companion for safe and efficient trimming with a 40 mm sheave diameter and a maximum working load of 408 kg. |
€ 271,82
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2654 Quad Carbo Air Block is a lightweight and high-strength solution for ropes up to 10 mm. Designed for jib and mainsheet systems on dinghies and control lines on small keelboats, it offers smooth, low-friction operation with UV-stabilized components for reliable performance. |
€ 226,91
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2600 Single Carbo Air Block is a lightweight and durable 57 mm block designed for ropes up to 10 mm. With a safe working load of 359 kg and a breaking strength of 1079 kg, it is ideal for main sheets and jib sheets, offering reliable performance in various sailing systems. |
€ 66,65
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1-2 weeks delivery time Price incl. 19% VAT The Harken HK2601 Carbo Single Air Block with Becket is a lightweight and durable 57 mm block designed for ropes up to 10 mm. With a safe working load of 359 kg and a breaking strength of 1079 kg, it is perfect for main sheets and jib sheets, providing reliable performance in various sailing applications. |
€ 78,71
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What are the key features of Harken Marine element blocks, such as the 60 mm and 80 mm sizes, and how do they contribute to efficient sail handling?
Harken element blocks, such as the 60 mm and 80 mm sizes, are designed for high strength and low weight, making them essential for efficient sail handling on a wide range of sailboats. These blocks feature advanced materials and Harken's precise engineering, ensuring smooth operation and durability in demanding conditions. As a leading manufacturer and marketer of quality marine hardware, Harken offers these blocks as part of their extensive selection of sailboat hardware and accessories, all available through our online store.
For additional versatility and effective rope handling solutions, complement your sailing gear with the high-performance Ronstan 40mm Block, designed to deliver optimal control and efficiency on the water.
What are the advantages of using a Harken furling system on a sailboat, and how does it improve sail management?
Using a Harken furling system on a sailboat offers significant advantages by making sail management more efficient and safer, especially in challenging ocean conditions. The Harken MkIV Ocean furling unit*allows for smooth and controlled deployment and reefing of the headsail, optimizing performance and reducing the physical effort required. Harken sailing gear is known for its durability and precision, making it a trusted choice among sailors to enhance their sailing gear and sailboat hardware setup.
What role does a Harken cam cleat play in sail control, and why is it essential for precise reef and sheet adjustments?
A Harken cam cleat plays a crucial role in sail control by securely holding the mainsail and sheet lines in place, allowing for quick and precise adjustments. This is essential for making fine-tuned reef and sheet changes, especially in dynamic conditions, ensuring optimal sail trim and performance. Harken, a leading manufacturer of quality marine and sailboat hardware, offers a wide selection of cam cleats designed to meet the needs of both small boats and larger vessels, making them an indispensable part of any Harken sailboat rigging system.