Aluminium Mast Extension SDM V3 U-Pin 30cm Unifiber UF030070052

Aluminium Mast Extension SDM V3 U-Pin 30cm Unifiber UF030070052

Description:

The Unifiber Aluminium Mast Extension SDM V3 U-Pin (30 cm) is a high-performance mast extension designed for windsurfing riders seeking stronger, lighter and more controllable downhaul systems. It combines a lightweight aluminium tube with a superior polyamide base and collar for increased strength and durability while keeping overall weight low. The V3 merges the best features of the V2 and HD versions: an improved polyamide base, an Open-Twist-Slide-&-Lock polyamide collar and three pulley positions for easier and more efficient downhauling. The pulley configuration can be set up to create a high-mechanical-advantage system (configurable up to an 8:1 setup like the HD model) for precise sail tuning and powerful downhaul. Supplied with a standard 4 mm polyester rope and a secure U-pin connection, this extension improves control, reduces flex under load and increases reliability in demanding conditions. Its robust construction and corrosion-resistant materials make it suitable for regular use in marine environments and compatible with standard SDM (Standard Diameter Mast) systems.

Key Features:

• Lightweight aluminium tube for reduced mass without sacrificing stiffness.
• High-strength polyamide base for improved impact and load resistance.
• Polyamide "Open, Twist, Slide & Lock" collar for quick, secure locking and easy operation.
• Three pulley positions for flexible downhaul setups; configurable to an 8:1 system for maximum mechanical advantage.
• Supplied with 4 mm polyester rope for immediate rigging.
• U-Pin connection for secure attachment to SDM-compatible rigs.
• Corrosion-resistant materials suitable for saltwater use and frequent deployment.
• Simple and reliable design that balances durability, performance and ease of use.

Specifications:

• Manufacturer: Unifiber
• SKU: UF030070052
• Material: Anodized aluminium tube; polyamide base and collar; 4 mm polyester rope
• Size/Dimensions: 30 cm length (mast extension tube)
• Weight: Lightweight design; exact weight not specified by manufacturer
• Color: Silver (anodized aluminium) with black polyamide components
• Size: 30
• Category: Mast Extensions
• Age Group: Adults
• Gender: Unisex
• Included: Standard 4 mm polyester rope, U-Pin connection

Recommended Use:

Ideal for recreational to advanced windsurfers and instructors who need a dependable, easy-to-tune mast extension for varied wind and wave conditions. Best suited to windsurfing activities where precise sail control and strong downhaul are required — from freeride and wave sessions to more demanding freestyle or bump-and-jump riding. Performs well in coastal and open-water conditions thanks to corrosion-resistant materials; suitable for frequent use in saltwater. Pairs well with SDM masts and standard booms; use recommended ropes and shackles rated for marine use for maximum safety.