MKIV Underdeck Furler Unit 2 (5/8" Toggle)
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Harken MKIV Underdeck Furler Unit 2 (5/8" Toggle)
Harken's MKIV Underdeck Furling is the perfect solution for performance racers and cruisers who want an aerodynamic system with a minimal amount of equipment above deck. The drum is located beneath the deck, lowering the tack height for maximized sail area. The small outside drum diameter lets the unit fit inside narrow bows.
Ball bearings between the center hub and deck bearing provide for low-friction furling. The through-deck bearing minimizes water seepage into the underdeck compartment. The torque tube houses a full-length turnbuckle for optimal mast rake and tension adjustment.
Key Features
- Aerodynamic system with minimal above-deck equipment
- Independent halyard and tack swivels furl sail center before head and tack for improved sail shape when reefed
- Lightweight aluminum halyard swivel saves weight aloft to reduce pitching and heeling
- Double-groove air foils for smooth sail handling and fast sail changes – even singlehanded
- Ball bearings between center hub and deck bearing, and main shaft reduce friction – drum and halyard swivel turn freely under load
- Narrow diameter belowdeck drum fits narrow bows
- Deep-saturation hardcoat-anodized aluminum for no-fade UV stabilization and durability
- Hardcoat-anodized line guard urethane-coated for additional corrosion protection
- Torque tube universal joint provides high-strength universal connection to allow ample headstay sag when sailing downwind
- Self-locking threaded height adjusters for correct fit between chainplate and deck
- Furler and headstay independent of each other, allowing flexible installation options
