Blocks
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45mm Black Magic block with becketSKU: HK3392Black 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, and spinnaker systems. Learn More
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45mm Black Magic blockSKU: HK3391Black 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, and spinnaker systems. Learn More
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16mm hook-in halyard blockSKU: HK391The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 181 kg and it weights just 13 gram. Learn More
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16mm Airblock with swivelSKU: HK417The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 339 kg and it weights just 18 gram. Learn More
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16mm Airblock flip flopSKU: HK437The 16 mm is Harken's smallest racing block. It is perfect for small control lines (up to 5mm ) found on small sailboats and boats up to 30 foot. The bearing system uses stainless steel balls and has a 113 kg maximum working load, a breaking load of 544 kg and it weights just 21 gram. Learn More
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57mm Block Single SwivelSKU: HK3215Black 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, and spinnaker systems. Learn More
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57mm Block Double SwivelSKU: HK3217Black 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, and spinnaker systems. Learn More
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57mm Block Double / Becket SwivelSKU: HK3218Black 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, and spinnaker systems. Learn More
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57mm Block low-load single swivelSKU: HK3226Black 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, and spinnaker systems. Learn More
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57mm Block Stand-up incl. padeye 6mm (1/4") fastener circle 37mm (1 15/32SKU: HK3227Black 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. Learn More
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57mm Block single / low-load / becket swivelSKU: HK3229Black 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, and spinnaker systems. Learn More
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75mm Block Single/SwivelSKU: HK3231Black 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, and spinnaker systems. Learn More
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75mm Block Single/Swivel/BecketSKU: HK3232Black 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, and spinnaker systems. Learn More
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75mm Block Double/SwivelSKU: HK3233Black 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, and spinnaker systems. Learn More
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75mm Block Stand-Up (incl. padeyeSKU: HK3244Black 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. Learn More
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100mm Block Single / SwivelSKU: HK3246Black 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, and spinnaker systems. Learn More
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100mm Block Stand-Up (incl. padeyeSKU: HK3254Black 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.
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Series 75 Core Block, Single RF74100SKU: RF74100Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Learn More
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Series 75 Core Block, Single, Becket RF74110SKU: RF74110Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Learn More
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Series 75 Core Block, Stand-Up RF74140SKU: RF74140Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Learn More