The Chinook Sailing Carbon US Cup-SDM Extension now utilizes an 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.
- Adds maximum of 48cm to mast length
- Standard Diameter (SDM)
- US Basecup
- Large brass pulleys for increased leverage
- Stronger than aluminum
The Chinook Sailing Carbon US Cup-SDM Extension now utilizes an 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.
- Adds maximum of 48cm to mast length
- Standard Diameter (SDM)
- US Basecup
- Large brass pulleys for increased leverage
- Stronger than aluminum