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Harken 2640 40mm Carbo Air Triple Block with Swivel

Manufacturer

Harken

<h3>About Harken: Performance Marine Hardware Since 1967</h3><p><strong>Harken</strong> is one of the most recognized names in performance marine hardware, with a legacy stretching back to 1967. <a href="/14853-harken">Harken</a> was founded in a 60-foot trailer by brothers Peter Harken and Olaf Harken, who set out to engineer better sailboat hardware than anything the market had to offer. Their early breakthrough — the plastic recirculating ball bearing block — redefined how sailors managed lines under load and launched a brand that would go on to dominate competitive sailing at the highest levels.</p><p>Headquartered in Pewaukee, Wisconsin, and with a major manufacturing facility in Limido Comasco, Italy, Harken operates as an employee-owned company with distribution spanning 48 countries. From club racing dinghies to grand prix offshore programs, Harken hardware has been aboard winning boats for decades — making its Olympic and America's Cup debuts in 1976 and 1977, respectively.</p><h3>A Full Range of Marine Hardware</h3><p>Harken's product lineup is broad by design. The company works hard to be the technological leader in sailboat blocks, deck hardware, winches, and hydraulics, as well as safety and rescue equipment and services. Their marine catalog includes small boat and big boat blocks, travelers and genoa leads, mainsail and headsail handling systems, winches, hydraulics, mooring solutions, and a robust line of spare parts and accessories.</p><p>At the core of it all are Harken's renowned <a href="/14853-harken-pulleys-blocks-200822">Pulleys &amp; Blocks</a> — the product category that started it all. Whether you're outfitting a high-tech racing dinghy or a bluewater cruising yacht, Harken blocks are engineered for high-load capacity, corrosion resistance, and the smoothest possible operation. The lineup spans sheave sizes from 16 mm all the way to 75 mm, with single, double, triple, fiddle, and soft-attach configurations to cover virtually every application on deck.</p><p>Beyond sailing, Harken also produces a dedicated line of sportfishing <a href="/14853-harken-pulleys-blocks-202394">Pulleys &amp; Blocks</a> engineered for the unique demands of offshore fishing. These compact, high-load pulleys are built for outrigger systems, dredge rigging, and heavy-duty line management — bringing the same patented bearing technology that excels on race courses to the rigors of the fishing cockpit.</p><h3>Why Sailors Trust Harken</h3><p>What sets Harken apart is a relentless commitment to engineering. Each product category is developed with input from top sailors, sailmakers, and boat designers — and the results speak for themselves on race courses worldwide. Harken hardware is a consistent fixture on America's Cup campaigns, Volvo Ocean Race fleets, Olympic classes, and everything in between. For cruisers, that race-proven performance translates into gear that is more reliable, longer-lasting, and more responsive than the alternatives.</p><ul><li>Employee-owned company with decades of marine engineering expertise</li><li>Manufacturing in the USA and Italy, with global distribution in 48 countries</li><li>Patented bearing systems engineered for high loads and minimal friction</li><li>Product lines covering everything from small dinghies to superyachts</li><li>Trusted at the Olympic Games and America's Cup since the 1970s</li></ul>

Part Number

2640
07/12/2036 11:05 PM
Sale Price

$121.48

In Stock (5)

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Product Details

The Harken 2640 40mm Carbo Air® Triple Block with Swivel is a lightweight, high-performance sailing block engineered for safe and easy sail trimming. Designed as a compact companion to Harken's Big Boat block lineup, this triple block delivers very high working loads in a small, reliable package — ideal for main sheets, jib sheets, spinnaker sheets, and highly loaded control lines on performance dinghies and small keelboats.

The Carbo Air® design strips away unnecessary material to reduce weight without sacrificing strength. Compared to Classic blocks, the Carbo Air series is 30% lighter and offers a 60% higher working load, making it a significant upgrade for competitive sailors and serious cruisers alike.

Key Features:

  • Open Air Block design eliminates unnecessary material and reduces overall weight
  • Ball bearings, sheave, and side plates are UV-stabilized with carbon black for maximum sun and salt protection
  • Patented switch locks shackle in front or side positions, or allows the block to swivel freely to prevent line twist
  • Long glass fiber injection-molded construction for high strength and durability
  • Torlon® ball bearings run friction-free in a high-strength frame for smooth, low-load trimming
  • Triple swivel configuration can lock in two directions or rotate freely

Specifications:

  • Part No.: 2640
  • Sheave Diameter: 40 mm (1-9/16 in)
  • Maximum Line Diameter: 10 mm (3/8 in)
  • Maximum Working Load: 1,455 lbs (660 kg)
  • Breaking Load: 3,050 lbs (1,383 kg)
  • Shackle Pin Diameter: 3/16 in (5 mm)
  • Weight: 4.6 oz (118 g)
  • Block Length: 94 mm

Built to endure harsh marine environments, the Harken 2640 is an excellent choice for competitive dinghy racing, sportboat sheeting systems, and any application demanding a reliable, low-friction triple block with versatile attachment options.

Products specifications

Diameter

3/8 Inch or 10 mm

Length

3 11/16 Inches

Mount Type

Swivel Shackle

Type

Triple

Weight

0.29

Ball Bearings

Plastic

Becket

No Becket

Direction

Any

Integral Cleat

No Integral Cleat

Ratchet

Non Ratcheting

Safe Working Load

1455 Pounds

Sheave Diameter

40 mm

Best price, quick shipping, packed well. Exactly what I wanted.

Quick and easy!

Super grateful you had the part. I searched other location and nobody had it in stock. You saved my bacon after the freezing temps. Will definitely shop here again and very fast delivery!

I paid a little extra for the fast delivery but it was worth it. I got it quickly and it worked great

I found the site affordable, easy to navigate, and fast shipping

I'll be a return customer.

Super price, fast checkout.

Order was accurate and shipping was on time.

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