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Sailing blocks. Buy online with Fosters, the home of quality sailing & yachting hardware for over 100 years. Stockists of Harken, Ronstan, Cleveco, HYE, Spinlock
  • HARKEN 2:1 TRAVELLER CONTROL ASSEMBLY

    Original price $1,225.89 - Original price $1,225.89
    Original price
    $1,225.89
    $1,225.89 - $1,225.89
    Current price $1,225.89
    Out of stock

    Fits Harken 32mm Traveller Cars: T3204B.HL, T3224B.HL, T3234B.HL, and T3244B.HL cars. Sheave Ø (mm) 57 mm Sheave Ø (in) 2 1/4 in Length (mm) 14...

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  • HARKEN 38 BIG BULLET BLOCK BECKET

    Original price $91.53 - Original price $91.53
    Original price
    $91.53
    $91.53 - $91.53
    Current price $91.53
    Out of stock

    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...

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  • HARKEN 38 BIG BULLET EXIT BLOCK

    Original price $108.27 - Original price $108.27
    Original price
    $108.27
    $108.27 - $108.27
    Current price $108.27
    Low stock

    Low-friction Big Bullet Exit blocks lead control lines or halyards through spars or decks. They are compact and lightweight, with fast trim and rel...

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  • HARKEN 38 BULLET BLOCK 2 WAY

    Original price $94.16 - Original price $94.16
    Original price
    $94.16
    $94.16 - $94.16
    Current price $94.16
    Out of stock

    Low-friction Bullet block with 2 way shackle. Shackle can be set either parallel or perpendicular to the block to change the orientation of the blo...

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  • HARKEN 38 BULLET SWIVEL BECKET BLOCK

    Original price $120.05 - Original price $120.05
    Original price
    $120.05
    $120.05 - $120.05
    Current price $120.05
    Out of stock

    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...

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  • HARKEN 38 BULLET SWIVEL BLOCK

    Original price $106.25 - Original price $106.25
    Original price
    $106.25
    $106.25 - $106.25
    Current price $106.25
    Out of stock

    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...

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  • HARKEN 38 DOUBLE BECKET BLOCK

    Original price $219.42 - Original price $219.42
    Original price
    $219.42
    $219.42 - $219.42
    Current price $219.42
    Out of stock

    Low-friction Big Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A rang...

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  • HARKEN 38 DOUBLE UPRIGHT LEAD BLOCK

    Original price $201.20 - Original price $201.20
    Original price
    $201.20
    $201.20 - $201.20
    Current price $201.20
    Low stock

    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...

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  • HARKEN 38 IN LINE EXIT BLOCK

    Original price $166.61 - Original price $166.61
    Original price
    $166.61
    $166.61 - $166.61
    Current price $166.61
    Low stock

    Low-friction Big Bullet inline Exit blocks lead control lines or halyards through spars or decks where the direction of pull is parallel to the mou...

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  • HARKEN 38 SINGLE BIG BULLET BLOCK

    Original price $77.79 - Original price $77.79
    Original price
    $77.79
    $77.79 - $77.79
    Current price $77.79
    Low stock

    Low-friction Harken Big Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads....

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  • HARKEN 38 TRIPLE BECKET BLOCK

    Original price $312.97 - Original price $312.97
    Original price
    $312.97
    $312.97 - $312.97
    Current price $312.97
    Out of stock

    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...

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  • HARKEN 38 TRIPLE BIG BULLET BLOCK

    Original price $295.18 - Original price $295.18
    Original price
    $295.18
    $295.18 - $295.18
    Current price $295.18
    Low stock

    Low-friction Big Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A rang...

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  • HARKEN 38 UPRIGHT LEAD BLOCK

    Original price $113.30 - Original price $113.30
    Original price
    $113.30
    $113.30 - $113.30
    Current price $113.30
    Low stock

    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...

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  • HARKEN 38MM SINGLE WIRE BLOCK

    Original price $176.30 - Original price $176.30
    Original price
    $176.30
    $176.30 - $176.30
    Current price $176.30
    Low stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave Ø (mm) 38 mm Sheave Ø (in...

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  • HARKEN 38MM SINGLE WIRE BLOCK BECKET

    Original price $201.45 - Original price $201.45
    Original price
    $201.45
    $201.45 - $201.45
    Current price $201.45
    Low stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave Ø (mm) 38 mm Sheave Ø (in...

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  • HARKEN 38MM WIRE CHEEK BLOCK

    Original price $183.67 - Original price $183.67
    Original price
    $183.67
    $183.67 - $183.67
    Current price $183.67
    Low stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave Ø (mm) 38 mm Sheave Ø (in...

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  • HARKEN 38MM WIRE SHEAVE

    Original price $111.16 - Original price $111.16
    Original price
    $111.16
    $111.16 - $111.16
    Current price $111.16
    Low stock

    Self-contained sheaves are designed for sailors to use in custom applications. Wire sheaves are Hard Lube-anodized aluminum that ride on high-load ...

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  • HARKEN 38MM WIRE THRU DECK BLOCK

    Original price $197.52 - Original price $197.52
    Original price
    $197.52
    $197.52 - $197.52
    Current price $197.52
    Out of stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave Ø (mm) 38 mm Sheave Ø (in...

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  • HARKEN 40MM ESP FOOT BLOCK

    Original price $184.40 - Original price $184.40
    Original price
    $184.40
    $184.40 - $184.40
    Current price $184.40
    Out of stock

    Cruising ESP blocks complement our existing blocks in looks and function but are simpler in design and construction. Sheaves feature sleeve bearing...

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  • HARKEN 4:1/8:1 GROSS/FINE TUNE SYSTEM

    Original price $2,048.62 - Original price $2,048.62
    Original price
    $2,048.62
    $2,048.62 - $2,048.62
    Current price $2,048.62
    Out of stock

    Harken® gross-trim/fine-tune mainsheet systems are easy to install and use. These optimized systems decrease overall line clutter because they use ...

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  • HARKEN 51mm Wire Block w/Becket

    Original price $288.32 - Original price $288.32
    Original price
    $288.32
    $288.32 - $288.32
    Current price $288.32
    Low stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave Ø (mm) 51 mm Sheave Ø ...

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  • HARKEN 51MM WIRE SHEAVE

    Original price $176.48 - Original price $176.48
    Original price
    $176.48
    $176.48 - $176.48
    Current price $176.48
    Low stock

    Self-contained sheaves are designed for sailors to use in custom applications. Wire sheaves ride on high-load composite bearings. They are hardcoat...

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  • HARKEN 52MM SINGLE WIRE BLOCK BECKET

    Original price $132.63 - Original price $132.63
    Original price
    $132.63
    $132.63 - $132.63
    Current price $132.63
    Low stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave Ø (mm) 25 mm Sheave Ø (in...

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  • HARKEN 57MM ESP FORKHEAD BLOCK

    Original price $297.76 - Original price $297.76
    Original price
    $297.76
    $297.76 - $297.76
    Current price $297.76
    Out of stock

    Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction. Sheaves feature sleeve bearin...

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  • HARKEN 57MM ESP LL MASTCOLLAR BLOCK

    Original price $198.08 - Original price $198.08
    Original price
    $198.08
    $198.08 - $198.08
    Current price $198.08
    Out of stock

    Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction. Sheaves feature sleeve bearin...

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  • HARKEN 57MM FLIP FLOP BLOCK

    Original price $901.86 - Original price $901.86
    Original price
    $901.86
    $901.86 - $901.86
    Current price $901.86
    Low stock

    The low-profile Flip-Flop blocks are lightweight and can be used for various leads on your boat including halyard leads, mainsheet leads and spinna...

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  • HARKEN 57MM HEXACAT BLOCK SWIVEL CAM

    Original price $603.13 - Original price $603.13
    Original price
    $603.13
    $603.13 - $603.13
    Current price $603.13
    Low stock

    Hexaratchets® grip loaded sheets, yet allow sailors to ease and trim quickly and with complete control. A switch on the side engages and disengages...

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  • HARKEN 57MM S/S ESP FOOT BLOCK

    Original price $610.73 - Original price $610.73
    Original price
    $610.73
    $610.73 - $610.73
    Current price $610.73
    Out of stock

    Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction. Sheaves feature sleeve bearin...

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  • HARKEN 57MM SB FLIP FLOP BLOCK

    Original price $513.81 - Original price $513.81
    Original price
    $513.81
    $513.81 - $513.81
    Current price $513.81
    Out of stock

    Small Boat Flip-Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows for various lead angles. Sh...

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  • HARKEN 57MM SB FLIP FLOP BLOCK CLEAT

    Original price $761.39 - Original price $761.39
    Original price
    $761.39
    $761.39 - $761.39
    Current price $761.39
    Low stock

    Small Boat Flip-Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows for various lead angles. She...

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  • HARKEN 57MM SB RATCHET FLIP FLOP BLOCK

    Original price $615.95 - Original price $615.95
    Original price
    $615.95
    $615.95 - $615.95
    Current price $615.95
    Out of stock

    Small Boat Flip-Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows for various lead angles. Adju...

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  • HARKEN 57MM SS ESP 3 SHEAVE DECK ORGANISER

    Original price $782.81 - Original price $782.81
    Original price
    $782.81
    $782.81 - $782.81
    Current price $782.81
    Low stock

    Deck organizers lead halyards and control lines aft, allowing crew to sail from the security of the cockpit. They lead a large number of lines thro...

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  • HARKEN 57MM UPRIGHT LEAD BLOCK

    Original price $196.11 - Original price $196.11
    Original price
    $196.11
    $196.11 - $196.11
    Current price $196.11
    Low stock

    The Harken 2.25 in (57 mm) blocks are compact and lightweight, with fast trim and release under high or low loads. Perfect for dinghies, scows, bea...

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  • HARKEN 75MM DOUBLE FIDDLE RATCHET CAM MR

    Original price $1,246.86 - Original price $1,246.86
    Original price
    $1,246.86
    $1,246.86 - $1,246.86
    Current price $1,246.86
    Low stock

    Harken® gross-trim/fine-tune mainsheet systems are easy to install and use. These optimized systems decrease overall line clutter because they use ...

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  • HARKEN 75MM DOUBLE HEX CROSS BLOCK

    Original price $871.93 - Original price $871.93
    Original price
    $871.93
    $871.93 - $871.93
    Current price $871.93
    Out of stock

    Harken® gross-trim/fine-tune mainsheet systems are easy to install and use. These optimized systems decrease overall line clutter because they use ...

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  • HARKEN 75MM ESP FIDDLE BECKET CAM

    Original price $1,117.12 - Original price $1,117.12
    Original price
    $1,117.12
    $1,117.12 - $1,117.12
    Current price $1,117.12
    Out of stock

    Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction. Sheaves feature sleeve bearin...

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  • HARKEN 76MM HI LOAD SINGLE BLOCK

    Original price $438.78 - Original price $438.78
    Original price
    $438.78
    $438.78 - $438.78
    Current price $438.78
    Low stock

    Midrange blocks robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on ...

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  • HARKEN ALLOY SHEAVE 100MM

    Original price $1,013.45 - Original price $1,013.45
    Original price
    $1,013.45
    $1,013.45 - $1,013.45
    Current price $1,013.45
    Low stock

    Big Boat sheaves are available for special applicationsas well as for replacement sheaves in Big Boat blocks.Made of hardcoat-anodized, PTFE-impreg...

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  • HARKEN ALLOY SHEAVE 114MM

    Original price $1,615.78 - Original price $1,615.78
    Original price
    $1,615.78
    $1,615.78 - $1,615.78
    Current price $1,615.78
    Out of stock

    Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of hardcoat-anodized, PTFE-impr...

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  • HARKEN ALLOY SHEAVE 140MM

    Original price $2,090.88 - Original price $2,090.88
    Original price
    $2,090.88
    $2,090.88 - $2,090.88
    Current price $2,090.88
    Low stock

    Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of hardcoat-anodized, PTFE-impr...

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  • HARKEN ALLOY SHEAVE 178MM

    Original price $3,417.19 - Original price $3,417.19
    Original price
    $3,417.19
    $3,417.19 - $3,417.19
    Current price $3,417.19
    Out of stock

    Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of hardcoat-anodized, PTFE-impr...

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  • HARKEN ALLOY SHEAVE 75MM

    Original price $659.01 - Original price $659.01
    Original price
    $659.01
    $659.01 - $659.01
    Current price $659.01
    Low stock

    Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of hardcoat-anodized, PTFE-impr...

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  • HARKEN BALL BEARINGS DELRIN

    Original price $0.24 - Original price $0.74
    Original price
    $0.24 - $0.74
    $0.24 - $0.74
    Current price $0.24
    In stock

    Harken Delrin ball bearings. Suitable as replacement parts for many Harken products.

  • HARKEN BALL BEARINGS TORLON

    Original price $0.74 - Original price $4.23
    Original price
    $0.74 - $4.23
    $0.74 - $4.23
    Current price $0.74
    In stock

    Harken Torlon ball bearings. Suitable as replacement parts for many Harken products.

  • HARKEN BB DECK ORGANISER 5 SHEAVE

    Original price $3,056.55 - Original price $3,056.55
    Original price
    $3,056.55
    $3,056.55 - $3,056.55
    Current price $3,056.55
    Out of stock

    Use Big Boat deck organizers to lead multiple lines aft to halyard stoppers or winches. Deck organizers feature aluminum hardcoat-anodized side pla...

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  • HARKEN BLACK MAGIC BLOCK SOCK

    Original price $108.82 - Original price $131.03
    Original price
    $108.82 - $131.03
    $108.82 - $131.03
    Current price $108.82
    Low stock

    Foam-padded block socks slip over your hardware to protect your blocks, deck, and crew. Available in sizes to fit all Harken Black Magic Blocks.

  • HARKEN BLOCK 16MM ANTI CAPSIZE

    Original price $61.96 - Original price $61.96
    Original price
    $61.96
    $61.96 - $61.96
    Current price $61.96
    Low stock

    The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system use...

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  • HARKEN BLOCK 16MM NARROW

    Original price $47.30 - Original price $47.30
    Original price
    $47.30
    $47.30 - $47.30
    Current price $47.30
    In stock

    The 16 mm is Harken’s smallest block. It is perfect forsmall synthetic control lines found on high-tech dinghies. The patented bearing system uses ...

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