{"product_id":"chinook-aluminum-extension-us-cup-standard-diameter-short","title":"Chinook Aluminum Extension - US Cup Standard Diameter Short","description":"The Chinook Aluminum US Cup-RDM-Short 12cm Extension delivers premium performance with custom alloy and bell-shaped tubing engineered for an exceptional weight-to-strength ratio. The innovative Composite Snap Collar system snaps into place with one hand—no lost pins or collars to worry about.\n\nThis extension adds up to 12cm to your mast length and features a reduced diameter design compatible with US basecup systems. The included US Power-Haul pulley and cleat system provides proven reliability, while large brass pulleys maximize your leverage. Adjusts in 2cm increments for precise tuning.\n\nBuilt for sailors who demand lightweight durability without compromise.","brand":"Chinook","offers":[{"title":"Default Title","offer_id":45413976965154,"sku":null,"price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0876\/5646\/4418\/files\/47S-AluminumExt_USCupRDMShort12cm_1600x_jpg_7f44c945-5105-4ea8-8748-49d96c1010e9.webp?v=1783008690","url":"https:\/\/larsonsport.com\/products\/chinook-aluminum-extension-us-cup-standard-diameter-short","provider":"Larson's Ski \u0026 Sport","version":"1.0","type":"link"}