![Chinook Carbon SDM extension w/ US Cup](http://oceanairsports.com/cdn/shop/products/Carbon_SDM_US_Cup_Extension_{width}x.jpg?v=1531237458)
Product Details
Improved lay-up and manufacturing process! Our lightest extensions come with a Six Pin adjusting collar and are stronger than ever with reinforced sidewalls. All come with the proven US Power-Haul pulley and cleat system and 2 cm adjustment increments.