Unifiber Essentials SDM Alu. Mast Extension Cross Pulley (U-pin)

Simple Rigging. Solid Performance.

Built for Easy Days on the Water

The Essentials SDM Aluminium Extension  is the ideal choice for recreational windsurfers who want reliable gear that works – every time. Whether you’re hitting the water for a weekend session or setting up school rigs, this extension delivers smooth, consistent performance without the fuss

Smarter Rigging with Less Effort

Thanks to its clever 6:1 cross pulley system, downhauling is easier and quicker – even with larger sails. The dual-pulley setup multiplies your pulling power, reducing strain and helping you rig to the perfect tension without breaking a sweat.

Reliable Strength Where It Counts

• 2mm wall thickness aluminium for a strong yet manageable weight
• Cross pulley design ensures smooth, efficient rope travel
• Available in 30cm (0.619kg) and 45cm (0.718kg)to suit your setup

Why Choose the Essentials SDM Aluminium Extension?

• Easy rigging with 6:1 cross pulley advantage
• Sturdy and dependable construction for long-term use
• Ideal for schools, rentals, and recreational sailors
• Lightweight and strong for all-around performance
• Compatible with standard U-Pin base systems

The Everyday Rigging Hero

The Essentials SDM Aluminium Extension takes the hassle out of rigging and gives you more time on the water. Simple, strong, and smart – just what you need for stress-free sailing.