{"title":"50mm Dynamic Blocks","description":"\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003eAllen 50mm dynamic blocks offer low friction performance in a lightweight body. Built to suit the more demanding applications on dinghies and sports catamarans. Also, a great choice for fast running control lines and sheets on keelboats. Available with a wide range of accessories and features.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"a2050-single","title":"50mm Single Dynamic Block","description":"\u003cp\u003e50mm Single Dynamic Block.\u003c\/p\u003e\n\u003cp\u003eThe A2050 is a high-performing ball-bearing block, designed to eliminate friction and allow rope to run at great speeds. \u003c\/p\u003e\n\u003cp\u003eIdeal for use on Keelboats and Catamarans for a range of applications from jib sheet to mainsheet systems and everything in between.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings: \u003c\/strong\u003eDynamic Blocks feature our patented bearing system, which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Lock: \u003c\/strong\u003eThe single block features a swivel lock, located at the head of the block. Simply turn the locking screw to either lock the swivel in 90-degree orientations or unlock it for a completely free-spinning shackle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket:\u003c\/strong\u003e A large central hole not only reduces the overall weight of the block but also offers a rope-friendly attachment, perfect as a tie-off point when being used in a cascade system.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196759581047,"sku":"A2050","price":46.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2050-2.jpg?v=1781800470"},{"product_id":"single-cheek-block","title":"50mm Single Dynamic Block - Cheek","description":"\u003cp\u003e50mm Single Dynamic Cheek Block.\u003c\/p\u003e\n\u003cp\u003eThe A2050C is a high-performing ball-bearing block, designed to eliminate friction and allow rope to run at great speeds.\u003c\/p\u003e\n\u003cp\u003eIdeal for use on Keelboats and Catamarans as a turning or leading block for most systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCheek Mounting:\u003c\/strong\u003e The A2050C comes with a cheek adaptor to allow mounting of our A2050 block to a flat surface. The adaptor allows for three fixings to be used to ensure a strong and reliable fitting to any surface. The chamfered shape of the cheek adaptor limits the chances of snagging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings:\u003c\/strong\u003e Dynamic Blocks feature our patented bearing system, which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196759679351,"sku":"A2050C","price":48.57,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2050C-1.jpg?v=1781800472"},{"product_id":"a2050tii-single-tii-on","title":"50mm Single Dynamic Block - Tii-On","description":"\u003cp\u003e50mm Single Tii-On Dynamic Block.\u003c\/p\u003e\n\u003cp\u003eOur Tii-On blocks feature a stainless-steel loop at the head of the block. This gives our Tii-On range maximum strength and reliability with minimal cheek separation when tied on and loaded up with a soft shackle. The stainless-steel head loop also ensures the block stays in the right orientation when being used.\u003c\/p\u003e\n\u003cp\u003eAvailable with or without a soft shackle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket:\u003c\/strong\u003e The large central rivet not only reduces the overall weight but also offers a rope-friendly attachment, perfect as a tie-off point when being used in a cascade system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings: \u003c\/strong\u003eDynamic Blocks feature our patented bearing system, which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitting Instructions: \u003c\/strong\u003eTii-On blocks rely on the correct attachment method to give them maximum strength.\u003c\/p\u003e\n\u003cp\u003eWhen attaching a Tii-on block, you must feed the rope around the central axle and through the head of the block.\u003c\/p\u003e\n\u003cp\u003eWhen possible, Tii-on blocks should be attached with a crossed\/ through threaded line. (see pictures for example). This is very important, as it keeps the line load pulling the side cheeks together.\u003c\/p\u003e\n\u003cp\u003eWhen using a Tii-Shackle, when possible, cross the lines. Only use a non-crossed Tii-Shackle on low-load applications. See the picture above of the block attached to a lacing eye for an example of how to cross the Tii-Shackle.\u003c\/p\u003e\n\u003cp\u003eFor further fitting advice, please contact us.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"No","offer_id":57196759875959,"sku":"A2050Tii","price":46.74,"currency_code":"GBP","in_stock":true},{"title":"Yes","offer_id":57196759908727,"sku":"A2050Tii-SHACKLE","price":57.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2050Tii-SHACKLE.jpg?v=1781800473"},{"product_id":"a2052-double","title":"50mm Double Dynamic Block","description":"\u003cp\u003e50mm Double Dynamic Block.\u003c\/p\u003e\n\u003cp\u003eThe A2052 is a high-performing ball bearing block, designed to eliminate friction and allow rope to run at great speeds.\u003c\/p\u003e\n\u003cp\u003eIdeal for use on Keelboats and Catamarans for a range of applications from jib sheet to mainsheet systems, to backstay tensioning systems and everything in between. \u003cbr\u003eThe 50mm double is a great choice for systems which require a larger purchase system with minimal friction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings: \u003c\/strong\u003eDynamic Blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Lock: \u003c\/strong\u003eThe A2052 comes with a removable swivel lock moulding. When installed, the shackle can be locked in 90-degree orientations. When removed, the attachment shackle can spin freely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket\u003c\/strong\u003e: A large central hole not only reduces the overall weight of the block but also offers a rope-friendly attachment, perfect as a tie-off point when being used in a cascade system.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196759974263,"sku":"A2052","price":96.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A205220Pad20Printed20Resized202.jpg?v=1781800474"},{"product_id":"a2053-double-with-becket","title":"50mm Double Dynamic Block - Becket","description":"\u003cp\u003e50mm Double Dynamic Block with Becket.\u003c\/p\u003e\n\u003cp\u003eThe A2053 is a high-performing ball bearing block, designed to eliminate friction and allow rope to run at great speeds.\u003c\/p\u003e\n\u003cp\u003eIdeal for use on Keelboats and Catamarans for a range of applications from jib sheet to mainsheet systems, to backstay tensioning systems and everything in between. \u003cbr\u003eThe 50mm double is a great choice for systems which require a larger purchase system with minimal friction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings:\u003c\/strong\u003e Dynamic Blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Lock: \u003c\/strong\u003eThe A2053 comes with a removable swivel lock moulding. When installed, the shackle can be locked in 90-degree orientations. When removed, the attachment shackle can spin freely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket: \u003c\/strong\u003eThis pulley features a central becket between the sheaves. This allows for easy termination of a rope as well as helping keep the load centralised.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196760105335,"sku":"A2053","price":99.16,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2053-2.jpg?v=1781800475"},{"product_id":"a2054-triple","title":"50mm Triple Dynamic Block","description":"\u003cp\u003e50mm Triple Dynamic Block.\u003c\/p\u003e\n\u003cp\u003eThe A2054 is a high-performing ball-bearing block, designed to eliminate friction and allow rope to run at great speeds. Ideal for use on Keelboats and Catamarans for a range of applications from jib sheet to mainsheet systems, to backstay tensioning systems and everything in between.\u003c\/p\u003e\n\u003cp\u003eThe 50mm triple is a great choice for systems which require a larger purchase system with minimal friction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings: \u003c\/strong\u003eDynamic Blocks feature our patented bearing system, which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Lock: \u003c\/strong\u003eThe A2054 comes with a removable swivel lock moulding. When installed, the shackle can be locked in 90-degree orientations. When removed, the attachment shackle can spin freely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket:\u003c\/strong\u003e A large central hole not only reduces the overall weight of the block but also offers a rope-friendly attachment, perfect as a tie-off point when being used in a cascade system.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196760170871,"sku":"A2054","price":135.08,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2054-2.jpg?v=1781800476"},{"product_id":"a2054hk-triple-with-hook","title":"50mm Triple Dynamic Block - Hook","description":"\u003cp\u003e50mm Triple Dynamic Block with Hook.\u003c\/p\u003e\n\u003cp\u003eThe A2054HK is a high-performing ball bearing block, designed to eliminate friction and allow rope to run at great speeds.\u003c\/p\u003e\n\u003cp\u003eThis block was designed so it can be easily attached or removed. Ideal for catamaran mainsheet systems or tensioning systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings: \u003c\/strong\u003eDynamic Blocks feature our patented bearing system, which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Hook:\u003c\/strong\u003e A large swivel hook allows for easy attachment. The hook can swivel 360 degrees.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket:\u003c\/strong\u003e A large central hole not only reduces the overall weight of the block but also offers a rope-friendly attachment, perfect as a tie-off point when being used in a cascade system.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196760301943,"sku":"A2054HK","price":149.21,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2054HK-2.jpg?v=1781800477"},{"product_id":"a2055-triple-with-becket","title":"50mm Triple Dynamic Block - Becket","description":"\u003cp\u003e50mm Triple Dynamic Block with Becket.\u003c\/p\u003e\n\u003cp\u003eThe A2055 is a high-performing ball-bearing block, designed to eliminate friction and allow rope to run at great speeds.\u003c\/p\u003e\n\u003cp\u003eIdeal for use on Keelboats and Catamarans for a range of applications from jib sheet to mainsheet systems, to backstay tensioning systems and everything in between. The 50mm triple is a great choice for systems which require a larger purchase system with minimal friction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings:\u003c\/strong\u003e Dynamic Blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Lock:\u003c\/strong\u003e The A2055 comes with a removable swivel lock moulding. When installed, the shackle can be locked in 90-degree orientations. When removed, the attachment shackle can spin freely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket: \u003c\/strong\u003eThis pulley features a central becket between the sheaves. The becket can be removed by undoing the split ring. This allows for easy termination of a spliced rope.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196760400247,"sku":"A2055","price":138.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2055-2.jpg?v=1781800478"},{"product_id":"a2056-quad","title":"50mm Quad Dynamic Block","description":"\u003cp\u003e50mm Quad Dynamic Block.\u003c\/p\u003e\n\u003cp\u003eThe A2056 is a high-performing ball-bearing block, designed to eliminate friction and allow rope to run at great speeds.\u003c\/p\u003e\n\u003cp\u003eIdeal for use on Keelboats and Catamarans for a range of applications from jib sheet to mainsheet systems, to backstay tensioning systems and everything in between. \u003cbr\u003eThe 50mm quad is a great choice for systems which require a larger purchase system with minimal friction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings:\u003c\/strong\u003e Dynamic Blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Lock:\u003c\/strong\u003e The A2056 comes with a removable swivel lock moulding. When installed, the shackle can be locked in 90-degree orientations. When removed, the attachment shackle can spin freely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket: \u003c\/strong\u003eA large central hole not only reduces the overall weight of the block but also offers a rope-friendly attachment, perfect as a tie-off point when being used in a cascade system.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196760727927,"sku":"A2056","price":177.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2056-2.jpg?v=1781800480"},{"product_id":"a2057-quad-with-becket","title":"50mm Quad Dynamic Block - Becket","description":"\u003cp\u003e50mm Quad Dynamic Block with Becket.\u003c\/p\u003e\n\u003cp\u003eThe A2057 is a high-performing ball bearing block, designed to eliminate friction and allow rope to run at great speeds.\u003c\/p\u003e\n\u003cp\u003eIdeal for use on Keelboats and Catamarans for a range of applications from jib sheet to mainsheet systems, to backstay tensioning systems and everything in between. \u003cbr\u003eThe 50mm quad is a great choice for systems which require a larger purchase system with minimal friction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings:\u003c\/strong\u003e Dynamic Blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Lock: \u003c\/strong\u003eThe A2057 comes with a removable swivel lock moulding. When installed, the shackle can be locked in 90-degree orientations. When removed, the attachment shackle can spin freely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket: \u003c\/strong\u003eThis pulley features a central becket between the sheaves. This allows for easy termination of a rope as well as helping keep the load centralised.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196760793463,"sku":"A2057","price":187.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2057-2.jpg?v=1781800481"},{"product_id":"a2059-quint","title":"50mm Quint Dynamic Block","description":"\u003cp\u003e50mm Quint Dynamic Block.\u003c\/p\u003e\n\u003cp\u003eDesigned for use as a low-friction mainsheet system on sports catamarans, but suitable for many other applications including backstay tensioning on keelboats.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBearings:\u003c\/strong\u003e Dynamic Blocks feature our patented bearing system, which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems available on the market.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwivel Lock:\u003c\/strong\u003e The A2059 comes with a removable swivel lock moulding. When installed, the shackle can be locked in 90-degree orientations. When removed, the attachment shackle can spin freely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBecket:\u003c\/strong\u003e A large central hole not only reduces the overall weight of the block but also offers a rope-friendly attachment point.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196760990071,"sku":"A2059","price":207.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A205920Quint2050mm20blocks20resized.jpg?v=1781800483"},{"product_id":"cheek-adaptor-for-50mm-block","title":"50mm Block Cheek Adaptor","description":"\u003cp\u003eCheek adaptor for 50mm blocks.\u003c\/p\u003e\n\u003cp\u003eCan be used with: \u003cbr\u003eA2150 - 50mm Pro-Ratchet \u003cbr\u003eA2050 - 50mm Dynamic Single Block\u003c\/p\u003e\n\u003cp\u003eSimply remove the shackle from the top of your block and insert the block into the cheek adaptor.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003eThe adaptor allows for three fixings to be used to ensure a strong and reliable fitting to any surface. The chamfered shape of the cheek adaptor limits the chances of snagging.\u003c\/p\u003e","brand":"Allen","offers":[{"title":"Default Title","offer_id":57196768231799,"sku":"A2156","price":5.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/7087\/9863\/files\/A2156-1.jpg?v=1781800561"}],"url":"https:\/\/allenbrothers.co.uk\/collections\/50mm-dynamic-blocks.oembed","provider":"Allen | Performance Sailing Hardware","version":"1.0","type":"link"}