Harken MKIV Jib Reefing and Furling systems


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.

Suitable for boats from 6.5m to 24.4m.

Contact our office to discuss your specific requirements.

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Harken Furling System – Low-friction efficiency for easy furling and reefing

  • Multiple rows of Torlon ball barings in high load areas minimalize friction
  • Stacked bearing races evenly distribute radial and thrust loads; drum and halyard swivel turn freely under load
  • Foils rotate around headstay so headstay load is isolated from the furling unit for easy furling
  • Large inner spool diameter increases mechanical advantage for powerful reefing and furling

Stands up to Sun, Salt and Time

  • Aluminium line guard, torque tube and swivels deep-saturation hardcoat anodized, UV-stabilized
  • Line guard polyurethane-coated for wear protection
  • Specially formulated low-stretch black line is abrasion and UV resistant
  • Aerodynamic, clear anodized aluminium Air foils handle extreme reefing loads
  • Triple-interlock foil joints withstand years of torque loading: foil connectors geometric shape interlocks with foil, secures with syringe-injected adhesive; screws provide final lock

Improved sail shape and boat control

  • Independent halyard and tack swivels furl sail centre before head and tack for improved sail shape when reefed
  • Lightweight aluminium halyard swivel saves weight aloft to reduce pitching and heeling

Fast hoists, douses, reefs and sail changes

  • Precision-extruded, double-groove Air foils for smooth sail handling and fast sail changes
  • Stainless steel feeder allows fast singlehanded hoist and sail changes

Additional information


Unit 0, Unit 1, Unit 2