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The Harken 75mm Carbo Air Block with Swivel – 2660 is engineered for sailors who demand high load capacity, low friction, and dependable durability in active trimming systems. Designed for mid-to-large size boats and high-load control lines, this block delivers smooth, efficient performance whether you’re racing or cruising.
Harken’s Carbo Air® series is known for combining lightweight composite sideplates with high-strength reinforcing fibers to maximize strength without unnecessary weight. The result is a block that maintains structural integrity under heavy loads while reducing overall rig weight — a key advantage for performance sailing.
The 75mm sheave runs on high-grade Delrin® ball bearings for ultra-low friction and quick acceleration under load. This allows sheets and control lines to run freely, making trimming easier and more responsive — especially important in gusty conditions or during rapid sail adjustments.
The integrated swivel head rotates smoothly to keep the block aligned with the load angle. This reduces line twist, minimizes wear, and ensures consistent performance from any mounting position. The swivel design also allows flexible installation in a variety of rigging setups.
The Harken 2660 is commonly used for:
Mainsheets
Spinnaker sheets
Furling lines
Lead blocks and turning points
High-load control systems
Its UV-stabilized composite frame and corrosion-resistant components are designed to withstand harsh saltwater environments, ensuring long service life with minimal maintenance.
Low-Friction Ball Bearings: High-load resin ball bearings ride in a polished race for effortless trimming and quick releases.
Carbo Construction: Lightweight, UV-stabilized sideplates are reinforced with long-glass fibers for maximum structural integrity.
Three-Way Locking Swivel: The swivel head can be locked in two different positions or left to spin freely, preventing line twists and allowing for custom rigging angles.
High Working Load: Optimized for high-tension applications like mainsheets, jib sheets, and spinnaker systems.
Open-Face Design: Sheds sand and salt effortlessly, reducing wear and maintenance time.
| Feature | Details |
| Part Number | 2660 |
| Sheave Diameter | 75 mm (2 15/16") |
| Maximum Line Ø | 14 mm (9/16") |
| Maximum Working Load | 550 kg (1213 lb) |
| Breaking Load | 1650 kg (3637 lb) |
| Weight | 191 g (6.7 oz) |
| Shackle Pin Ø | 8 mm (5/16") |
1x Harken 2660 75mm Carbo Air Block
1x Stainless Steel Shackle
Swivel Locking Pin (Pre-installed)
Whether outfitting a performance dinghy, sportboat, or small keelboat, the Harken 75mm Carbo Air Block with Swivel provides the strength, speed, and reliability sailors trust for precise sail control.
Manufacturer : Harken
Manufacturer Part No : 2660
Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
US$40
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