Mast Extension Heavy Duty SDM U-Pin 45cm Unifiber SC000100140

Mast Extension Heavy Duty SDM U-Pin 45cm Unifiber SC000100140

Description:

The Unifiber Heavy Duty SDM mast extension is a robust and reliable mast extension designed to give windsurfers secure, repeatable rig tuning and a strong connection between boom and sail. It combines a superior-quality polyamide base and collar with a lightweight aluminum tube to deliver an excellent strength-to-weight ratio and long-term durability. The collar uses Unifiber’s polyamide "Open, Twist, Slide & Lock" system for quick, positive locking and easy adjustments on the water. Supplied with a standard 4 mm polyester rope and U-pin fastening, the extension is ready for immediate installation and secure use in a range of conditions. Its heavy-duty construction is intended to withstand high loads from powerful sails and aggressive sailing, while the lightweight tube minimizes added weight aloft. Compatible with SDM (Standard Diameter Mast) systems, this extension is ideal for sailors who need dependable performance and precise trim control.

Key Features:

• Polyamide base and collar for high strength and impact resistance
• Lightweight aluminum tube for a strong strength-to-weight ratio
• Polyamide "Open, Twist, Slide & Lock" collar for fast, secure locking and easy on-water adjustments
• Supplied with standard 4 mm polyester rope for immediate use
• U-pin fastening for reliable mechanical retention of the extension
• Heavy-duty design engineered for high loads and demanding sailing conditions
• Durable construction for extended service life and low maintenance
• Compatible with SDM (Standard Diameter Mast) fittings and common windsurfing booms

Specifications:

Manufacturer: Unifiber
SKU: SC000100140
Material: Polyamide base & collar; lightweight aluminum tube; 4 mm polyester rope
Size/Dimensions: 45 cm extension length
Weight: Not specified by manufacturer
Color: Not specified by manufacturer
Size: 45 cm
Category: Mast Extensions
Age Group: Adults
Gender: Unisex

Recommended Use:

Ideal for recreational through advanced windsurfers and sailors who require a dependable mast extension for tuning and rig control. Best suited for windsurfing applications where strong, repeatable locking and high-load performance are needed—such as freeride, slalom, and wave conditions. Performs well in a wide range of water conditions including choppy seas and open-water sailing. Pair with SDM-compatible masts and standard booms; use with appropriate mast sleeves and boom protectors as needed.