{"title":"Mainsheet System Blocks","description":"\u003cp\u003eBlocks designed to configure efficient, precise mainsheet systems. They allow different purchase ratios to be created for smooth mainsail control, reduced effort, and more accurate adjustment.\u003c\/p\u003e","products":[{"product_id":"harken-40-mm-zircon-catamaran-mainsheet-system","title":"Harken 40 mm Zircon Mainsheet System for catamarán","description":"\u003cp\u003eThe Harken Zircon Catamaran Mainsheet System represents the pinnacle of efficiency for high-performance multihulls. Equipped with next-generation ceramic bearings, the system virtually eliminates friction, allowing instant trimming even under the extreme loads generated by a large mainsail. Its Stand-Up design keeps the assembly upright and aligned, optimizing every adjustment in gusty conditions. It is the definitive technical solution for racers demanding superior tactile feedback and unmatched response speed.\u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":53386830578002,"sku":null,"price":70700000001.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/harken-40-mm-zircon-catamaran-mainsheet-system.jpg?v=1778481076"},{"product_id":"harken-3-1-6-1-two-speed-mainsheet-system","title":"Harken 3:1 6:1 Mainsheet System Two Speeds","description":"\u003cp\u003eThe Harken Two-Speed Mainsheet System provides revolutionary dual-mode control for managing large sails with complete precision. Its design allows switching between rapid line retrieval and a high-power stage for final trimming under heavy load. The Stand-Up configuration keeps the lower block perfectly aligned, facilitating line flow and preventing tangles. It is the definitive technical solution for sailors seeking to combine raw power with tactical agility in mainsail handling.\u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":53386830872914,"sku":null,"price":70700000002.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/harken-3_1-6_1-two-speed-mainsheet-system.jpg?v=1778481123"},{"product_id":"harken-4-1-8-1-two-speed-mainsheet-self-contained-system","title":"Harken 4:1 8:1 Mainsheet System Two Speeds","description":"\u003cp\u003eThe Harken Two-Speed Self-Contained Mainsheet System is a compact unit designed to provide both power and speed without unnecessary complexity. Its integrated mechanism provides a smooth transition between rapid adjustment and high-load fine trimming, eliminating the need for complex external installations. The Stand-Up base keeps the system upright and aligned, ensuring clean line exit and protecting the deck. It is the ideal technical solution for boats requiring efficient, organized, high-performance mainsail control.\u003c\/p\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":53386831167826,"sku":null,"price":70700000003.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/harken-4_1-8_1-two-speed-mainsheet-self-contained-system.jpg?v=1778481135"},{"product_id":"ronstan-6-1-3-1-two-speed-mainsheet-system-ratchet","title":"Ronstan 6:1 3:1 Mainsheet System Two Speeds","description":"\u003cp\u003eThe Ronstan Two-Speed Ratchet Mainsheet System provides exceptional control by combining power with holding capability. Its design allows rapid line retrieval during fast maneuvers and fine adjustment under load, while the ratchet function reduces sailor effort when holding tension manually. The integrated spring keeps the system upright and aligned. It is the ideal technical solution for dinghies and catamarans seeking precise, secure, ergonomic mainsail handling.\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":53389203374418,"sku":null,"price":70700000001.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/ronstan-6_1-3_1-two-speed-mainsheet-system_-ratchet.jpg?v=1778487355"},{"product_id":"ronstan-6-1-3-1-two-speed-mainsheet-bottom-blocks-only","title":"Ronstan 6:1 3:1 Only Lower Two-Speed Mainsheet Blocks","description":"\u003cp\u003eRonstan Two-Speed Lower Mainsheet Blocks are key components for optimizing variable-mechanical-advantage systems. Designed specifically to work with upper blocks, they enable configurations that alternate between trimming speed and power. A spring-loaded articulated base keeps the unit upright, ensuring perfect line alignment and preventing the system from striking the deck. They are the ideal technical solution for sailors who want to customize their mainsheet system for durability, low weight, and flawless mechanical response under load.\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":53389204193618,"sku":null,"price":70700000002.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/ronstan-6_1-3_1-two-speed-mainsheet-bottom-blocks-only.jpg?v=1778487374"},{"product_id":"ronstan-6-1-3-1-two-speed-mainsheet-top-blocks-only","title":"Ronstan 6:1 3:1 Only Upper Two-Speed Mainsheet Blocks","description":"\u003cp\u003eRonstan Two-Speed Upper Mainsheet Blocks are essential components designed to work in synchronization with dual-speed lower blocks. Their engineering provides efficient load distribution and facilitates the transition between rapid trimming and high-power adjustment. Lightweight, strong construction minimizes weight at the top of the mainsheet system and improves sail response. They are the ideal technical solution for custom mainsheet systems requiring low weight, strength, and perfect alignment.\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":53389204750674,"sku":null,"price":70700000003.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/ronstan-6_1-3_1-two-speed-mainsheet-top-blocks-only_b65a806a-9d12-4792-911c-6c9b870ec602.jpg?v=1778487421"},{"product_id":"ronstan-8-1-4-1-two-speed-mainsheet-bottom-blocks-only","title":"Ronstan 8:1 4:1 Only Lower Two-Speed Mainsheet Blocks","description":"\u003cp\u003eRonstan Two-Speed Lower Mainsheet Blocks are key components for optimizing variable-mechanical-advantage systems. Designed specifically to work with upper blocks, they enable configurations that alternate between trimming speed and power. A spring-loaded articulated base keeps the unit upright, ensuring perfect line alignment and preventing the system from striking the deck. They are the ideal technical solution for sailors who want to customize their mainsheet system for durability, low weight, and flawless mechanical response under load.\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":53389205832018,"sku":null,"price":70700000004.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/ronstan-8_1-4_1-two-speed-mainsheet-bottom-blocks-only.jpg?v=1778487434"},{"product_id":"ronstan-8-1-4-1-two-speed-mainsheet-top-blocks-only","title":"Ronstan 8:1 4:1 Only Upper Two-Speed Mainsheet Blocks","description":"\u003cp\u003eRonstan Two-Speed Upper Mainsheet Blocks are essential components designed to work in synchronization with dual-speed lower blocks. Their engineering provides efficient load distribution and facilitates the transition between rapid trimming and high-power adjustment. Lightweight, strong construction minimizes weight at the top of the mainsheet system and improves sail response. They are the ideal technical solution for custom mainsheet systems requiring low weight, strength, and perfect alignment.\u003c\/p\u003e","brand":"Ronstan","offers":[{"title":"Default Title","offer_id":53389206454610,"sku":null,"price":70700000005.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/ronstan-8_1-4_1-two-speed-mainsheet-top-blocks-only.jpg?v=1778487449"},{"product_id":"selden-4-1-poleas-de-sistema-de-escota-de-mayor","title":"Selden 4:1 Mainsheet System Blocks","description":"\u003cp\u003eSeldén Mainsheet System Blocks represent excellence in marine engineering for precise mainsail control. Designed to withstand high dynamic loads, these blocks provide minimal friction and exceptional durability in harsh marine conditions. Advanced bearing technology enables smooth, efficient trimming and optimizes boom response. Choose Seldén for maximum reliability, safety, and performance in your mainsheet system, ensuring smooth maneuvers every time you sail.\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":53448917778770,"sku":null,"price":70700000001.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/selden-4_1-poleas-de-sistema-de-escota-de-mayor.jpg?v=1778838199"},{"product_id":"selden-5-1-poleas-de-sistema-de-escota-de-mayor","title":"Selden 5:1 Mainsheet System Blocks","description":"\u003cp\u003eSeldén Mainsheet System Blocks represent excellence in marine engineering for precise mainsail control. Designed to withstand high dynamic loads, these blocks provide minimal friction and exceptional durability in harsh marine conditions. Advanced bearing technology enables smooth, efficient trimming and optimizes boom response. Choose Seldén for maximum reliability, safety, and performance in your mainsheet system, ensuring smooth maneuvers every time you sail.\u003c\/p\u003e","brand":"Selden","offers":[{"title":"Default Title","offer_id":53448917877074,"sku":null,"price":70700000002.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/7713\/2370\/files\/selden-5_1-poleas-de-sistema-de-escota-de-mayor.jpg?v=1778838215"}],"url":"https:\/\/www.saildeckgear.com\/en\/collections\/mainsheet-system-blocks.oembed","provider":"Sail Deck Gear","version":"1.0","type":"link"}