{"product_id":"chinook-carbon-extension-us-cup-reduced-diameter-short","title":"Chinook Carbon Extension - US Cup Reduced Diameter Short","description":"Chinook Skinny Carbon US Base Cup Extension\n\nEngineered for strength and precision, this carbon extension features a reduced diameter (RDM) design that minimizes fiber removal while maintaining structural integrity. The snap pin and collar adjustment system delivers reliable, tool-free length tuning in 2cm increments.\n\nAvailable in three sizes:\n- Short: 12cm extension, $119\n- Medium: 32cm extension, $134\n- Tall: 46cm extension, $139\n\nEvery extension includes the proven EX Power-Haul pulley and cleat system for dependable performance on the water. Ideal for fine-tuning mast geometry to match your sail plan and riding style.","brand":"Chinook","offers":[{"title":"Default Title","offer_id":45413977522210,"sku":null,"price":134.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0876\/5646\/4418\/files\/0b86b08ed05f5c297122fe6f5d4d84cc_1106x1185_jpg.webp?v=1783010936","url":"https:\/\/larsonsport.com\/products\/chinook-carbon-extension-us-cup-reduced-diameter-short","provider":"Larson's Ski \u0026 Sport","version":"1.0","type":"link"}