The Unifiber HD RDM Carbon Mast Extension (U-Pin) is engineered to deliver the perfect balance of lightweight performance, stiffness, and durability in the toughest conditions.

The carbon tube reduces overall weight while maximizing stiffness, improving power transfer and responsiveness between rig and board. The fiber-reinforced nylon base ensures excellent impact resistance and reliability under heavy loads, making it ideal for wave sailing, high-wind sessions, and aggressive riding.

Its heavy-duty construction is designed for long-term durability and consistent performance. The 2-pulley system with a 6:1 downhaul ratio allows efficient tensioning while keeping rigging simple and smooth.

Compact, strong, and responsive, this extension is the perfect choice for advanced riders who demand precision, durability, and lightweight performance.

Key features

• Lightweight and stiff carbon tube
• Fiber-reinforced nylon base for high durability
• Heavy-duty construction for extreme conditions
• Direct connection for improved control and feedback
• 2-pulley system with 6:1 downhaul ratio
• Low-friction pulleys for easier rigging
• Compatible with RDM masts and U-Pin systems
• Ideal for wave, high wind, and demanding use