{"product_id":"chinook-aluminum-extension-us-cup-reduced-diameter-medium","title":"Chinook Aluminum Extension - US Cup Reduced Diameter Medium","description":"The Chinook Aluminum Extension US Cup-RDM-Medium delivers superior performance for sailors seeking reliable mast extension solutions. Engineered with custom alloy and bell-shaped tubing, this 28cm extension maximizes the weight-to-strength ratio essential for demanding sailing conditions.\n\nThe innovative Composite Snap Collar system streamlines setup—no lost pins or collars, and one-hand adjustment for quick on-water modifications. Paired with the proven US Power-Haul pulley and cleat system, this extension provides the leverage and control serious sailors demand.\n\nKey features include 2cm adjustment increments for precise tuning, large brass pulleys for enhanced mechanical advantage, and reduced diameter design optimized for US Basecup compatibility. Built to perform in competitive and recreational sailing alike.","brand":"Chinook","offers":[{"title":"Default Title","offer_id":45413976539170,"sku":null,"price":101.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0876\/5646\/4418\/files\/40S-AluminumExt_USCupRDMMed28cm_6f419fb7-5fec-4a3a-84a4-829b98ed6add_1600x_jpg.webp?v=1782947357","url":"https:\/\/larsonsport.com\/products\/chinook-aluminum-extension-us-cup-reduced-diameter-medium","provider":"Larson's Ski \u0026 Sport","version":"1.0","type":"link"}