Mast Extension Heavy Duty SDM U-Pin 42cm Unifiber SC000100150

Mast Extension Heavy Duty SDM U-Pin 42cm Unifiber SC000100150

Description:

The Unifiber Heavy Duty SDM Mast Extension (U-Pin, 42 cm) is a robust, easy-to-adjust mast extension designed for windsurfing rigs using a Standard Diameter Mast (SDM). It combines a high-strength polyamide base with a lightweight aluminum tube to deliver a sturdy, corrosion-resistant connection that keeps rig geometry consistent under load. The collar uses Unifiber’s Polyamide "Open, Twist, Slide & Lock" system for fast, secure adjustments on the water, and the extension ships with a standard 4 mm polyester adjustment rope. Built for heavy-duty use, the reinforcement at load points increases durability and reduces flex for improved sail handling and power transfer. The U-Pin configuration ensures reliable locking and quick release when needed, making rig changes and tuning straightforward. Ideal for sailors seeking dependable performance and longevity in a compact, serviceable package.

Key Features:

• Polyamide base for increased strength at critical load points
• Lightweight anodized aluminum tube for reduced weight and corrosion resistance
• Polyamide “Open, Twist, Slide & Lock” collar for fast, secure adjustment
• Supplied with standard 4 mm polyester rope for easy rigging and trimming
• U-Pin locking system for reliable retention and quick release on the water
• Heavy-duty construction minimizes flex for improved power transfer and responsiveness
• Suitable for SDM (Standard Diameter Mast) systems and compatible with most SDM sails and booms
• Low-maintenance materials for long service life in marine environments

Specifications:

Manufacturer: Unifiber
SKU: SC000100150
Material: Polyamide base, anodized aluminum tube, 4 mm polyester rope
Size/Dimensions: 42 cm length
Weight: Not specified
Color: Silver (aluminum) with black polyamide components
Size: 42 cm
Category: Mast Extensions
Age Group: Adults
Gender: Unisex

Recommended Use:

Recommended for recreational and advanced windsurfers as well as club-level and rental fleets seeking durable, easy-to-service extensions. Best suited for onshore and offshore windsurfing where reliable mast/boom connection and quick adjustments are required. Performs well in a range of water conditions, including coastal and open-water sailing; heavy-duty construction is especially valuable in stronger winds and higher loads. Pairs well with SDM masts, compatible booms, and standard harness lines — keep a spare 4 mm rope and basic tools aboard for on-the-fly adjustments and maintenance.