Aluminium Mast Extension Essentials SDM Cross Pulley U-pin 30cm Unifiber UF030070060

Aluminium Mast Extension Essentials SDM Cross Pulley U-pin 30cm Unifiber UF030070060

Description: This Unifiber mast extension is a precision-built 30 cm SDM (Standard Diameter Mast) extension designed to give windsurfers reliable, repeatable tuning and smooth sail trim. Constructed from anodized aluminium with stainless steel hardware and a low-friction cross pulley, it delivers durable performance and corrosion resistance in harsh marine environments. The integrated cross pulley reduces line friction for crisper downhaul and outhaul control, while the U-pin locking system ensures a secure and simple attachment to the boom and base. Its compact, lightweight design improves handling and responsiveness without adding unnecessary bulk. Built for regular use, the extension balances stiffness and adjustability so riders can fine-tune sail shape and power on the water. Easy to install and low maintenance, it’s a practical upgrade for sailors seeking consistent performance.

Key Features: - Anodized aluminium body for strength and corrosion resistance
- 30 cm SDM length ideal for a wide range of sail and mast combinations
- Low-friction cross pulley for smoother downhaul and outhaul operation
- Secure U-pin locking system with stainless steel pin for reliable attachment
- Composite or sealed-bearing pulley for long-lasting, low-maintenance use
- Lightweight construction improves responsiveness and handling
- Simple installation and easy tuning on the water
- Robust design suited to frequent use in marine conditions

Specifications: - Manufacturer: Unifiber
- SKU: UF030070060
- Material: Anodized aluminium body; stainless steel U-pin; composite/sealed-bearing pulley
- Size/Dimensions: 30 cm length (SDM)
- Weight: Lightweight aluminium construction (manufacturer weight not specified)
- Color: Metallic / silver (anodized finish)
- Size: 30
- Category: Mast Extensions
- Age Group: Adults
- Gender: Unisex

Recommended Use: Ideal for recreational and advanced windsurfers as well as instructors and club fleets who need dependable tuning and control. Best suited for onshore and offshore windsurfing where precise sail trim and low-friction line handling improve performance. Performs well in a range of conditions from flat water to moderate chop; corrosion-resistant materials make it suitable for regular saltwater use. Pairs well with SDM masts, compatible booms and standard downhaul/outhaul lines — recommended to use with quality rope and shackles for optimum longevity.