Harken 2640 40mm Carbo Air Triple Block with Swivel

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.