Blocks - Single

Harken 29mm Pivoting Lead Block - Cam-Matic Cleat High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “head knockers” on dinghies and beachcats for sheeting directly from the boom. Hole...

Harken 57mm T2™ Soft-Attach Ratchamatic® Block - Red Sheave The patented T2 Ratchamatic is Harken’s newest block to feature the T2 line’s styling and soft-attachment system. The weight of this high-strength block is only a few...

Harken 40mm Pivoting Lead Block - Carbo-Cam® Cleat High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “headknockers” on dinghies and beachcats for sheeting directly from the boom. Hole...

Harken 57mm Aluminum Loop Block - Wide Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner,...

Harken 6.5T Aluminum V™ Block - Wide The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by combining the axial and thrust bearings into a single...

Harken 40mm Pivoting Lead Block - Cam-Matic® Cleat High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “headknockers” on dinghies and beachcats for sheeting directly from the boom...

Harken 3T Aluminum V™ Block - Wide The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by combining the axial and thrust bearings into a single...

Harken 1.5T Aluminum V™ Block - Wide The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by combining the axial and thrust bearings into a single...

Harken 5T Aluminum V™ Block The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by combining the axial and thrust bearings into a single bearing set...

Harken 3T Aluminum V™ Block The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by combining the axial and thrust bearings into a single bearing set...

Harken 100mm Aluminum Block - Swivel, Becket Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet,...

Harken 100mm Aluminum Block - Swivel Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner,...

Harken 100mm Aluminum Loop Block Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard,...

Harken 57mm Ratchet Block - Swivel, Becket, Cam Cleat Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Note: Maximum working loads and breaking loads for blocks are based on cam...

Harken 57mm Ratchet Block - Swivel, Cam Cleat Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Note: Maximum working loads and breaking loads for blocks based on cam strengths...

Harken 57mm Ratchet Block - Swivel Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. On/off switch operates from both sides. Standard grip: medium/light air; 10:1 holding...

Harken 57mm Block Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. ...

Harken 57mm T2 Soft-Attach Ratchamatic Block - 1.5x Grip Power3 ratchet blocks provide sailors that race small one-designs with three holding-power options to handle a variety of wind and sea conditions. More choices allow sailors to fine-tune their...

Harken 29 mm Wire Bullet Block - Swivel Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line...

Harken Aluminium Mastbase Block - 76mm Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase. Download Instruction Manual Part Number HKN-1990 Height (mm) 95...