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Harken Code Zero Furling Furler Unit 00, 6mm Pin/shackle Dia., 2750lb. Mwl, 5500lb. Breaking Load

Originally built for Volvo 60s, Code Zero furlers are used with free-flying asymmetrical headsails and staysails. Suitable for boats up to 125 (38 m), they tame Code Zero sails, screechers, Gennakers® and staysails.

The eight-faceted sheave-drive grips line aggressively to furl these huge sails with minimal line. Its large diameter makes furling smooth and easy. The 3126, 3127, 3128 and 3115 Code Zero?s spring-loaded arms hold line captive in the sheave. Arms open to remove the line for quick unfurling, or to strike the furler. A built-in stripper safely guides line out of the furler. The lower unit incorporates a quick sail disconnect by pushing a spring-loaded button.

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Compact hardened steel roller thrust bearings handle extremely high luff loads. Furler heights are kept to a minimum, so luff lengths can be at maximum length.

Since furling a Code Zero sail requires very high luff tension, a 2:1 adapter is available. This fits either the upper or the lower unit, but installation on the upper is advised to prevent halyard twisting. A snap shackle adapter allows quick disconnect.

To handle torsional load, we recommend a dual luff cord system. This system uses thimbles to loop the cords around the tack and head of the sail. Talk to your sailmaker. Code Zero furlers are not for reefing.

Fits boats:

• Code Zero 00: 20′?30′ (6?9m)
• Code Zero 0: 25′?40′ (8?12m)
• Code Zero 1: 35′?50′ (11?15m)
• Code Zero 2: 45′?70′ (14?21m)
• Code Zero 3: 60′?95′ (18?29m)
• Code Zero 4: 85′?125′ (26?38m)

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Harken Code Zero Furling Furler Unit 1, 10mm Pin/shackle Dia., 8000lb. Mwl, 16,000lb. Breaking Load

Originally built for Volvo 60s, Code Zero furlers are used with free-flying asymmetrical headsails and staysails. Suitable for boats up to 125 (38 m), they tame Code Zero sails, screechers, Gennakers® and staysails.

The eight-faceted sheave-drive grips line aggressively to furl these huge sails with minimal line. Its large diameter makes furling smooth and easy. The 3126, 3127, 3128 and 3115 Code Zero?s spring-loaded arms hold line captive in the sheave. Arms open to remove the line for quick unfurling, or to strike the furler. A built-in stripper safely guides line out of the furler. The lower unit incorporates a quick sail disconnect by pushing a spring-loaded button.

[Click here for more info!]

Compact hardened steel roller thrust bearings handle extremely high luff loads. Furler heights are kept to a minimum, so luff lengths can be at maximum length.

Since furling a Code Zero sail requires very high luff tension, a 2:1 adapter is available. This fits either the upper or the lower unit, but installation on the upper is advised to prevent halyard twisting. A snap shackle adapter allows quick disconnect.

To handle torsional load, we recommend a dual luff cord system. This system uses thimbles to loop the cords around the tack and head of the sail. Talk to your sailmaker. Code Zero furlers are not for reefing.

Fits boats:

• Code Zero 00: 20′?30′ (6?9m)
• Code Zero 0: 25′?40′ (8?12m)
• Code Zero 1: 35′?50′ (11?15m)
• Code Zero 2: 45′?70′ (14?21m)
• Code Zero 3: 60′?95′ (18?29m)
• Code Zero 4: 85′?125′ (26?38m)

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Harken Mkiv Unit 0 Furlers Furler, 3/8″ Pin

MKIV Jib Reefing & Furling Systems

Designed for performance racing and cruising sailors, these strong, lightweight, aerodynamic systems are built with longevity, ease of use, and simplicity of installation as vital design components.

Installation is easy: C-shaped open connectors with low-friction plastic isolators slip onto the headstay wire and into the foil without the need to cut your headstay. The foil’s twin grooves and smooth feeder allow fast hoists, douses, and sail changes—ideal for club racing. The drum install over the existing turnbuckle and is adaptable to a variety of rigging options. The Harken toggle assembly accepts standard turnbuckles using swage, rod, Norseman or Sta-Lok terminals, or fits directly to a marine eye and the turnbuckle body is accessible for adjustment by raising the drum.

Other outstanding features:

• Multiple rows of free-rolling Torlon® ball bearings minimize friction for smooth sailing
• in high-load areas, computer-designed stacked bearing races and large-diameter drums offer smooth reefing and furling.
• Independent head and tack swivels shape the sail when partially furled
• Strong foil joints withstand years of torque loading and are easy to assemble
• Small diameter torque tube with tapered top ensures the furled sail has a smooth, compact shape
• Deep-saturation Hardkote anodized line guard, torque tube and swivels for strength and durability
• Removable split drum comes off easily for racing
• Stainless feeder allows easy hoisting and sail changes
• Double grooves for racing sail changes
• Fits #6 luff tapes

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The controlling dimensions for sizing Harken furling systems are headstay wire diameter and clevis pin diameter. Measure your boat’s headstay length to determine whether a standard package has enough foils to build the unit.

• Choose Unit 0 for boats 22′–30′
• Choose Unit 1 for boats 26′–36′
• Choose Unit 2 for boats 36′–46′

MKIV Unit 0

For boats 22′ to 30′ and headstay lengths from 38′7″ to 45′7″.

• Boat Size: 22′–30′ (6.5m-9.1m)
• Headstay Length: Standard 38′7″ (11.77m); Max. 45′7″ (13.9m)
• Headstay: Wire: 3/16″, 7/32″ (5, 6mm); Rod -4, 4.37mm, -6, 5.03mm)
• Pin Diameter: 3/8″, 7/16″ (9.5, 11.1mm)
• Headstay Extrusion: Aluminum aerodynamic Air-Foils
• Grooves: Double grooves for racing sail changes
• Drum Material: Hardkote-anodized aluminum; drum cap engineered from super-tough polymer resin
• Head Swivel Material: Hardkote-anodized aluminum
• Attachment Method: Swage, Rod, Norseman® or Sta-Lok® terminals required; toggle flips for fork or tang chainplate installation
• Ball Bearings: Torlon® bearings in high-load areas

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Harken Mkiv Unit 1 Furler

MKIV Jib Reefing & Furling Systems

Designed for performance racing and cruising sailors, these strong, lightweight, aerodynamic systems are built with longevity, ease of use, and simplicity of installation as vital design components.

Installation is easy: C-shaped open connectors with low-friction plastic isolators slip onto the headstay wire and into the foil without the need to cut your headstay. The foil’s twin grooves and smooth feeder allow fast hoists, douses, and sail changes—ideal for club racing. The drum install over the existing turnbuckle and is adaptable to a variety of rigging options. The Harken toggle assembly accepts standard turnbuckles using swage, rod, Norseman or Sta-Lok terminals, or fits directly to a marine eye and the turnbuckle body is accessible for adjustment by raising the drum.

Other outstanding features:

• Multiple rows of free-rolling Torlon® ball bearings minimize friction for smooth sailing
• in high-load areas, computer-designed stacked bearing races and large-diameter drums offer smooth reefing and furling.
• Independent head and tack swivels shape the sail when partially furled
• Strong foil joints withstand years of torque loading and are easy to assemble
• Small diameter torque tube with tapered top ensures the furled sail has a smooth, compact shape
• Deep-saturation Hardkote anodized line guard, torque tube and swivels for strength and durability
• Removable split drum comes off easily for racing
• Stainless feeder allows easy hoisting and sail changes
• Double grooves for racing sail changes
• Fits #6 luff tapes

[Click here to buy now!]

The controlling dimensions for sizing Harken furling systems are headstay wire diameter and clevis pin diameter. Measure your boat’s headstay length to determine whether a standard package has enough foils to build the unit.

• Choose Unit 0 for boats 22′–30′
• Choose Unit 1 for boats 26′–36′
• Choose Unit 2 for boats 36′–46′

MKIV Unit 1

For boats 28′ to 36′ and headstay lengths from 45′11″ to 52′7″.

• Boat Size: 28′–36′ (8.3–11m)
• Headstay Length: Standard 45′11″ (13.99m); Max. 52′11″ (16.12m)
• Headstay: Wire: 1/4″, 9/32″ (6, 7, 8mm); Rod: -8, 5.72mm, -10, 6.35mm
• Pin Diameter: 1/2″ (12.7mm)
• Headstay Extrusion: Aluminum aerodynamic Air-Foils
• Grooves: Double grooves for racing sail changes
• Drum Material: Hardkote-anodized aluminum; drum cap engineered from super-tough polymer resin
• Head Swivel Material: Hardkote-anodized aluminum
• Attachment Method: Swage, Rod, Norseman® or Sta-Lok® terminals required; toggle flips for fork or tang chainplate installation
• Ball Bearings: Torlon® bearings in high-load areas

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Harken Mkiv Unit 2 Furler

MKIV Jib Reefing & Furling Systems

Designed for performance racing and cruising sailors, these strong, lightweight, aerodynamic systems are built with longevity, ease of use, and simplicity of installation as vital design components.

Installation is easy: C-shaped open connectors with low-friction plastic isolators slip onto the headstay wire and into the foil without the need to cut your headstay. The foil’s twin grooves and smooth feeder allow fast hoists, douses, and sail changes—ideal for club racing. The drum install over the existing turnbuckle and is adaptable to a variety of rigging options. The Harken toggle assembly accepts standard turnbuckles using swage, rod, Norseman or Sta-Lok terminals, or fits directly to a marine eye and the turnbuckle body is accessible for adjustment by raising the drum.

Other outstanding features:

• Multiple rows of free-rolling Torlon® ball bearings minimize friction for smooth sailing
• in high-load areas, computer-designed stacked bearing races and large-diameter drums offer smooth reefing and furling.
• Independent head and tack swivels shape the sail when partially furled
• Strong foil joints withstand years of torque loading and are easy to assemble
• Small diameter torque tube with tapered top ensures the furled sail has a smooth, compact shape
• Deep-saturation Hardkote anodized line guard, torque tube and swivels for strength and durability
• Removable split drum comes off easily for racing
• Stainless feeder allows easy hoisting and sail changes
• Double grooves for racing sail changes
• Fits #6 luff tapes

[Click here to buy now!]

The controlling dimensions for sizing Harken furling systems are headstay wire diameter and clevis pin diameter. Measure your boat’s headstay length to determine whether a standard package has enough foils to build the unit.

• Choose Unit 0 for boats 22′–30′
• Choose Unit 1 for boats 26′–36′
• Choose Unit 2 for boats 36′–46′

MKIV Unit 2

For boats 35′ to 46′ and headstay lengths from 60′4″ to 67′4″.

• Boat Size: 35′–46′ (10.6′–14.2m)
• Headstay Length: Standard 60′4″ (18.38m); Max. 67′4″ (20.51m)
• Headstay: Wire: 5/16″, 3/8″ (8, 10mm); Rod: -12, 7.14mm, -17, 8.38mm
• Pin Diameter: 5/8″ (15.9mm)
• Headstay Extrusion: Aluminum aerodynamic Air-Foils
• Grooves: Double grooves for racing sail changes
• Drum Material: Hardkote-anodized aluminum; drum cap engineered from super-tough polymer resin
• Head Swivel Material: Hardkote-anodized aluminum
• Attachment Method: Swage, Rod, Norseman® or Sta-Lok® terminals required; toggle flips for fork or tang chainplate installation
• Ball Bearings: Torlon® bearings in high-load areas

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