Mast Extension Heavy Duty RDM U-Pin 46cm Unifiber SC000100070

Mast Extension Heavy Duty RDM U-Pin 46cm Unifiber SC000100070

Description:

This Unifiber Heavy Duty RDM mast extension is engineered to deliver maximum stiffness and reliable connection between your mast and board in demanding conditions. Constructed from a robust aluminum tube with a reinforced plastic base and an extra stainless steel insert between the base and tube, it resists bending and wear even under heavy loads and rough weather. The U-pin locking system provides a positive, safe retention of the mast extension, simplifying rigging while minimizing play. Its super-stiff profile improves power transfer and control, giving more precise handling and better upwind drive for windsurfing and foil setups. Corrosion-resistant stainless steel components and a durable polymer base ensure long service life with minimal maintenance. Compatible with RDM (reduced diameter) masts and most standard RDM-compatible boards, this extension is designed for riders who demand durability without compromising performance.

Key Features:

• Heavy-duty aluminum tube for excellent stiffness and strength
• Extra stainless steel reinforcement between plastic base and aluminum tube for enhanced durability
• Reinforced polymer base designed to withstand repeated loading and impacts
• Secure U-pin locking system for reliable mast retention and simple rigging
• Optimized stiffness for improved power transfer, control and responsiveness
• Corrosion-resistant stainless steel hardware for long-term reliability in saltwater environments
• Designed for RDM (Reduced Diameter Mast) compatibility with most boards and masts
• Built for demanding windsurfing and foiling conditions where durability matters

Specifications:

• Manufacturer: Unifiber
• SKU: SC000100070
• Material: Aluminum tube; reinforced plastic (base); stainless steel reinforcement and U-pin
• Size/Dimensions: Length 46 cm; RDM compatible mast extension
• Weight: Not specified by manufacturer (lightweight aluminum construction)
• Color: Aluminum (silver) tube with black polymer base — as pictured
• Size: 46cm
• Category: Mast Extensions
• Age Group: Adults
• Gender: Unisex

Recommended Use:

Ideal for intermediate to professional windsurfers and foilers who need a rugged, low-flex extension for aggressive sailing and foiling. Best suited to conditions ranging from strong winds and choppy seas to demanding open-water sessions where board-to-mast connection must remain rigid and reliable. Pair with RDM masts and RDM-compatible boards; use with a quality mast boot and regular anti-corrosion maintenance for the longest service life.