{"product_id":"chinook-aluminum-extension-us-cup-standard-diameter-medium","title":"Chinook Aluminum Extension - US Cup Standard Diameter Medium","description":"The Chinook Aluminum US Cup-SDM-Medium Extension delivers reliable mast adjustment with a maximum 28cm extension. Features the innovative Six Pin collar for quick, secure positioning and anodized index markings for precise tuning. Built with the proven US Power-Haul pulley and cleat system, large brass pulleys for enhanced leverage, and 2cm adjustment increments. Standard diameter fits US basecup systems. A trusted choice for sailors seeking dependable performance and easy customization.","brand":"Chinook","offers":[{"title":"Default Title","offer_id":45413976834082,"sku":null,"price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0876\/5646\/4418\/files\/40-ALUMUSSDMMED28CM_1600x_jpg.webp?v=1782947932","url":"https:\/\/larsonsport.com\/products\/chinook-aluminum-extension-us-cup-standard-diameter-medium","provider":"Larson's Ski \u0026 Sport","version":"1.0","type":"link"}