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MKIV Jib Reefing & Furling Systems |
| Designed for performance racing and cruising sailors, MKIV furling systems are strong, lightweight and aerodynamic, with the performance and features Harken® is known for. Longevity, ease of use and simplicity of installation are crucial components of the design. These free-rolling furlers make all the difference in headsail control by allowing racers and cruisers to quickly furl and reef from the safety of the cockpit, while maintaining great sail shape and optimal speed.
Aluminum line guard, torque tube and swivels are deep-saturation Hardkote anodized for strength and durability, with a black additive for no-fade UV-stabilization and corrosion protection. The line guard is also powder coated for added corrosion resistance. The drum cap is engineered from tough polymer resin. Systems feature free-rolling ball bearings, computer-designed stacked bearing races and large-diameter drums for smooth reefing and furling. A free-spinning, high-strength halyard swivel reduces weight aloft to minimize pitching and heeling. The double foil grooves allow fast hoists, douses, and sail changes—ideal for club racing. MKIV jib reefing and furling systems are designed for owner installation. Seven-year limited warranty. |
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MKIV Jib Reefing & Furling System, Unit 0 |
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| MKIV Unit 0 Jib Furler Typical Boat Length: 22' - 30' (6.5m - 9.1m) Wire Diameter: 3/16" & 7/32" (5mm & 6mm) Rod Diameter: -4, 4.37mm, -6, 5.03mm Clevis Pin Diameter: 3/8", 7/16" (9.5mm, 11.1mm)
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MKIV Jib Reefing & Furling System, Unit 1 |
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| MKIV Unit 1 Jib Furler Typical Boat Length: 28' - 36' (8.3m - 11m) Wire Diameter: 1/4" & 9/32" (6mm, 7mm & 8mm) Rod Diameter: -8, 5.72mm, -10, 6.35mm Clevis Pin Diameter: 1/2" (12.7mm)
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MKIV Jib Reefing & Furling System, Unit 2 |
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| MKIV Unit 2 Jib Furler Typical Boat Length: 35' - 46' (10.6m - 14.2m) Wire Diameter: 5/16" & 3/8" (8mm & 10mm) Rod Diameter: -12, 7.14mm, -17, 8.38mm Clevis Pin Diameter: 5/8" (15.9mm)
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MKIV Jib Reefing & Furling System, Unit 3 |
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| MKIV Unit 3 Jib Furler Typical Boat Length: 45' - 60' (13.7m - 18.3m) Wire Diameter: 7/16" & 1/2" (11mm, 12mm & 14mm) Rod Diameter: -22, 9.53mm, -30, 11.10mm Clevis Pin Diameter: 3/4", 7/8" (19.1mm, 22.2mm)
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