Sailing Blocks & Pullies

Sailing Blocks & Pullies

165 products

    Blocks and pullies for Hobie, Nacra and Prindle catamarans.  Mainsheet, Jib sheet, cheek blocks, halyard blocks, replacement sheaves, single, double, triple and quad blocks.

    165 products
    Ronstan Series 40 Ball Bearing Orbit Block, Single, Swivel Murrays Part# 21-48100 The Ronstan Orbit 40mm Block with ball bearings provide the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fiber reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability.
    RONSTAN SERIES 40 BALL BEARING ORBIT BLOCK, SINGLE, SWIVEL
    Ronstan
    Harken 57mm 5-Sheave Block-Swivel Murrays Part# 56-9955 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 Part# 2762
    HARKEN 57MM 5-SHEAVE BLOCK-SWIVEL
    Harken
    Harken 10:1 Mainsheet Carbo Air Base Block Murrays Part# 56-9953 This Carbo AirBlock® has an enormous working range, with a higher working load than a standard block, even though it is lighter in weight. The Carbo Ratchet block allows sailors to hand-hold loaded lines and offers balance between holding power and controlled easing. The base block has an on-off ratchet and will roll freely in both directions when disengaged, such as in light air.
    HARKEN 10:1 MAINSHEET CARBO AIR BASE BLOCK
    Harken
    Harken 12:1 Mainsheet Carbo Boom Block Murrays Part# 56-9966 Harken 57mm triple fiddle block with swivel used for 12:1 mainsheet systems on beach cats. Low-friction Carbo AirBlocks® are lightweight, strong, reliable and affordable. These small, compact blocks have very high working loads for safe, easy trimming. Specifications: Sheave Diameter: 2-1/4" Length: 6" Maximum Line Diameter: 7/16" Maximum Working Load: 2380 lb. Breaking Strength: 5000 lb. Weight: 11.15 oz. Harken Part# HSB379
    HARKEN 12:1 MAINSHEET CARBO BOOM BLOCK
    Harken
    Harken 12:1 Mainsheet Carbo Ratchamatic Base Harken 57 mm triple fiddle with reinforced cam arms that is used for 12:1 mainsheet systems on beach cats. Low-friction Carbo AirBlocks® are lightweight, strong, reliable and affordable. Companions to the popular Harken® Black Magic® line, these small, compact blocks have very high working loads for safe, easy trimming.
    HARKEN 12:1 MAINSHEET CARBO RATCHAMATIC BASE
    Harken
    Harken 16mm Double Block-Becket Murrays Part# 28-0407 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 uses stainless steel balls in a captive grooved race. Harken Part# 407
    HARKEN 16MM DOUBLE BLOCK-BECKET
    Harken
    Harken 57mm Carbo Side Cover Murrays Part# 28-26521B One Harken replacement right or left 57mm side cover washer for #28-2629 Carbo Ratchamatic base block. #28-2652 Right cam arm washer 57mm is Harken #H-26521B. #28-2653 Left cam arm cover 57mm with nut is Harken #HSB524.
    HARKEN 57MM CARBO SIDE COVER
    Harken
    Harken 40mm Triple Ratchet Block — Swivel, Cam Cleat Murrays Part# 28-2612 Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.
    HARKEN 40MM TRIPLE RATCHET BLOCK-SWIVEL, CAM CLEAT
    Harken
    Harken 57mm Triple Ratchet Block-Swivel, Becket, Cam Cleat Murrays Part# 28-2141 ​Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. This lower block can be used for 6:1 system without need for being low profile like H16, or it can have a block added above the cleat for use in 8:1 system without ratchomatic.
    HARKEN 57MM TRIPLE RATCHET BLOCK-SWIVEL, BECKET, CAM CLEAT
    Murrays Sports
    Harken 57mm T2 Soft-Attach Block Murrays Part# 28-2152 ​The high-strength composite T2™ is the first block with no metal shackles or rivets. It is used for traveler controls, mainsheets and vangs, cascades, bridles, and other systems where small, lightweight blocks are called for. The T2 can be tied, spliced, or lashed to almost anything. A length of Spectra® line is included.
    HARKEN 57MM T2 SOFT-ATTACH BLOCK
    Harken
    Harken 40 mm Zircon Block Murrays Part# 28-2190 ​Zircon blocks help trimmers match sail shapes to new conditions immediately. At the core of the Zircon performance are industrial ceramic ball bearings mounted inside caged races. The cages keep these bearings separated so they don’t bunch, touch, and stop each other. The result is the most efficient small boat block Harken has ever made. Zircon blocks are available in 40- and 57-mm sheaves in single and double blocks, with or without beckets.
    HARKEN 40MM ZIRCON BLOCK
    Harken
    HARKEN 40MM ZIRCON BLOCK-BECKET
    Harken
    Harken 40mm Triple Block -Swivel Murrays Part# 28-2192 ​Zircon blocks help trimmers match sail shapes to new conditions immediately. At the core of the Zircon performance are industrial ceramic ball bearings mounted inside caged races. The cages keep these bearings separated so they don’t bunch, touch, and stop each other.
    HARKEN 40MM TRIPLE BLOCK-SWIVEL
    Harken
    Harken 40mm Zircon Double Block - Becket Murrays Part# 28-2193 ​Zircon blocks help trimmers match sail shapes to new conditions immediately. At the core of the Zircon performance are industrial ceramic ball bearings mounted inside caged races. The cages keep these bearings separated so they don’t bunch, touch, and stop each other.
    HARKEN 40MM ZIRCON DOUBLE BLICK- BECKET
    Harken
    Harken 40mm Block-Swivel, Becket Murrays Part# 28-2637 ​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 40MM BLOCK-SWIVEL, BECKET
    Harken
    Harken 40mm Double Block with Becket Murrays Part# 28-2643 ​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 40MM DOUBLE BLOCK WITH BECKET
    Harken
    1.5x Titanium Sheave for GP MS Murrays Part# 28-H76688 1.5x Holding Power: Titanium The 1.5x ratchet has a holding power of 15:1, or 1.5 times that of the standard ratchet. Use in breezy, puffy conditions to boost holding power and to ease quickly when a puff hits. Depending on line composition and cover texture, the more aggressive sheave facets can increase line wear.
    HARKEN 1.5x TITANIUM SHEAVE FOR GP MS
    Harken
    Harken 2x Silver Sheave for GP MS Murrays Part# 28-H76687 This is a replacement sheave for the GP Mainsheet system. 2x Holding Power: Silver The 2x ratchet has a holding power of 20:1 or twice that of the standard block. Use in strong, steady wind where holding power is mandatory. The 2x ratchet provides the most aggressive grip on any size line or type.
    HARKEN 2X SILVER SHEAVE FOR GP MS
    Harken
    Harken 40mm Zircon Catamaran Mainsheet System Murrays Part# 28-2801 This new, more compact Zircon ceramic bearing mainsheet system is a testimonial to the power of collaboration. The previous generation of GP mainsheet system had become the standard among catamaran sailors at the highest levels.
    HARKEN 40MM ZIRCON CATAMARAN MAINSHEET SYSTEM
    Harken
    Harken 57mm T2™ Soft-Attach Ratchamatic® Block-Red Sheave Murrays Part# 28-2160red Harken Block 57mm T2 Soft-Attach Ratchet Block for catamarans, this tie-on block eliminates the need for shackles, posts, swivels, etc. It is ultra-lightweight and sized like a bullet-block.
    HARKEN 57MM T2 SOFT-ATTACH RATCHAMATIC BLOCK-RED SHEAVE
    Harken
    Harken 16mm Eyestrap Block Murrays Part# 28-0442 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 uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) maximum working load. The 442 uses a spacer to keep the line in the sheave during intermittent loading.
    HARKEN 16MM EYESTRAP BLOCK
    Harken
    Harken 57mm Block-Swivel Becket Murrays Part# 28-2601 Low-friction Harken 57mm Carbo Single with Becket Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.
    HARKEN 57MM BLOCK-SWIVEL BECKET
    Harken
    Harken 40mm Triple Block-Swivel, Cam Cleat Murrays Part# 28-2647 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 40MM TRIPLE BLOCK-SWIVEL, CAM CLEAT
    Harken
    Harken 75mm Block-Swivel Murrays Part# 28-2660 ​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 75MM BLOCK-SWIVEL
    Harken
    Harken 57mm Ratchamatic Block-Swivel, Becket Murrays Part# 28-2626 ​The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless.
    HARKEN 57MM RATCHAMATIC BLOCK-SWIVEL,BECKET
    Harken
    Harken 57mm T2™ Soft-Attach Ratchamatic Block-1.5x Grip Murrays Part# 28-2167 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 set-ups in tandem with the purchase that provides the ideal level of power, responsiveness and grip. The patented T2 Ratchamatic is Harken’s newest block to feature the T2 line’s styling and soft-attachment system.
    HARKEN 57MM T2 SOFT-ATTACH RATCHAMATIC BLOCK-1.5 GRIP
    Harken
    HARKEN 57MM T2 LOOP SOFT-ATTACH BLOCK
    Harken
    Harken 57mm Ratchamatic HTE Block-Swivel, 1.5x Grip Murrays Part# 28-2165HTE ​The Harken Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless. The spring on the HTE (high-threshold engage) version of the 57 mm Carbo Ratchamatic blocks was made stiffer to delay the point where the ratchet engages, allowing the block to run free more of the time
    HARKEN 57MM RATCHAMATIC HTE BLOCK-SWIVEL, 1.5X GRIP
    Harken
    Harken 40mm Double Block - Swivel Murrays Part# 28-2638 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 40MM DOUBLE BLOCK- SWIVEL
    Harken
    Harken 18mm Fly Soft-Attach Double Block Murrays part# 28-2158 Harken soft-attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low-aero package. Designed specifically for high-tech line, these efficient blocks have an incredible working load for their small size. Fly blocks are perfect for use on foiling dinghies and sport boats and for vang cascades and backstay systems on Grand-Prix racers.
    HARKEN 18MM FLY SOFT-ATTACH DOUBLE BLOCK
    Harken
    RONSTAN SERIES 40 BALL BEARING ORBIT BLOCK, TRIPLE, SHACKLE HEAD
    Ronstan
    RONSTAN SERIES 40 BALL BEARING ORBIT BLOCK, LASHING SNATCH BLOCK
    Ronstan
    RONSTAN SERIES 15 BALL BEARING CHEEK BLOCK WITH TWO FASTENING HOLES
    Ronstan
    Ronstan Series 15BB Block, Stand-up Loop Features: Smallest and lightest ball bearing block available Precision molded acetal sheave running on stainless steel ball bearings provide high performance
    RONSTAN SERIES 15BB BLOCK, STAND UP LOOP
    Ronstan
    Ronstan Series 15 Ball Bearing Single Block with Loop Top and Becket Murrays Part# 21-15111 This is a great little block, for weight, durability and working loads. Features: Smallest and lightest ball bearing block available Precision molded acetal sheave running on stainless steel ball bearings provide high performance low friction Single loop head blocks include an O-ring to separate running line from head lashing or fixing.
    RONSTAN SERIES 15 BALL BEARING SINGLE BLOCK WITH LOOP TOP AND BECKET
    Ronstan
    Harken 29mm Wire Cheek Bullet Block Murrays Part# 28-0109 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 applications. Wire Bullet blocks use roller bearings to carry higher loads and feature hardcoat-anodized PTFE impregnated aluminum sheaves for strength and corrosion resistance.
    HARKEN 29MM WIRE CHEEK BULLET BLOCK
    Harken
    Harken 3.00" Block-Swivel Murrays Part# 28-0005 The 3.00 (76 mm) blocks are compact and lightweight, with fast trim and release under high or low loads. Perfect for dinghies, scows, beachcats and iceboats, as well as small offshore racers and cruisers.
    HARKEN 3.00" BLOCK-SWIVEL
    Harken
    Out of Stock
    NACRA Masthead Sheave 460/ 5.0/ 5.2/ 5.7 - 30160 Replacement mast head sheave for a Nacra 460, 5.0, 5.2 and 5.7. Nacra part number 30160
    NACRA MASTHEAD SHEAVE
    NACRA
    Ronstan Mast Head Sheave (European) Murrays Part# 51-13041700 This is a downhaul sheave for the basic Hobie 16 Downhaul system. Hobie Europe factory replacement "halyard" sheave. But by the looks of their parts list its a down haul sheave that goes on the bottom of the gooseneck.
    RONSTAN MAST HEAD SHEAVE (EUROPEAN)
    Ronstan
    Harken 40mm Fiddle Block -Swivel, Cam Cleat Murrays Part# 28-2657 Harken's Carbo fiddle block features high-load ball bearings with fitted races for low-friction operation. The 40 mm fiddle is an excellent choice for a Hobie® 20 barber hauler block, for 3:1 and 4:1 tackles on dinghy vangs and mainsheets, as well as for controls such as cunninghams and internal boom outhauls on larger boats.
    HARKEN 40MM FIDDLE BLOCK- SWIVEL, CAM CLEAT
    Harken
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