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Harken Jib Reefing & Furling
Systems MKIV - Overview
Harken MKIV Genoa 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.
Easy Reefing and Furling:
Multiple rows of large-diameter Torlon® ball bearings used in
high-load areas to minimize friction for easy reefing and furling;
require no lubrication or isolating seals.
More Furling Power:
Large inner spool diameter increases mechanical advantage for
powerful reefing and furling. Smaller outside dimension allows
unit to fit narrow bows or below deck. Unit rotates around rod
or wire headstay so furling bearings do not carry the headstay
load for easy furling.
Long-Lasting Protective Finish:
Aluminum line guard, torque tube, and swivels are deepsaturation
hardcoat-anodized for no-fade UV-stabilization,
strength, and durability. The hardcoat-anodized line guard
is urethane-coated for additional corrosion protection.
Specially formulated low-stretch black line is abrasionand
UV-resistant; standard on units 0, 1, and 2.
1. Halyard Swivel Turns Freely -
Strong, lightweight halyard swivel reduces
windage and weight aloft to minimize pitching
and heeling. Stacked bearing races evenly
distribute radial and thrust loads to ball
bearings; foils turn freely under halyard loads.
Independent halyard and tack swivels furl sail
center before head and tack for improved sail
shape and upwind pointing.
2. Strong Foil Joints -
Tough triple-interlock foil joints withstand
years of torque loading. Connector’s geometric
shape interlocks to foil and secures with a
syringe-injected adhesive into an engineered
channel. Screws provide final lock.
3. Easy to Assemble Foils -
C-shaped open connectors with low-friction
plastic isolators slip onto the headstay wire
and into foil for easy installation.
4. Drum Installs Over
Existing Turnbuckle -
Units are adaptable to a variety of rigging
options for easy installation. Harken toggle
assembly accepts standard turnbuckle using
swage, rod, Norseman®, or Sta-Lok® terminals.
Toggle flips for fork or tang chainplate
installation. A single stainless steel clevis pin
provides access to the turnbuckle for
5. Stainless Steel Feeder -
Stainless steel feeder allows fast
singlehanded hoist and quick sail changes.
6. Removable Split Drum -
Line guard and spool come off easily
7. Double Foil Grooves for Racing -
Aerodynamic aluminum Air Foils® handle
extreme reefing loads. Double foil grooves
allow fast hoists, douses, and sail changes.
Harken MKIV Genoa Furling Units
We at Layline strive to be your source for Harken MKIV Genoa Furling Units and all sailboat hardware, rigging, and sailing gear. With our focus on one design and handicap racing we can offer advice and reviews of what you need to compete. If you need any assistance selecting the appropriate Harken MKIV Genoa Furling Units
please contact us. Our crew is ready to help!