The Chinook Sailing Carbon US Cup RDM Extension is elegant and very strong. A new easy to use Composite Snap Collar system eliminates lost pins or collars and can be quickly adjusted with one hand. All extensions come with the proven US Power-Haul pulley and cleat system and 2 cm adjustment increments.
- Adds maximum of 46cm to mast length
- Reduced Diameter
- US Basecup
- Large brass pulleys for increased leverage
- Stronger than aluminum