Collar MK5 Double-Pin Locker Black 25 mm Unifiber UF590000003

Collar MK5 Double-Pin Locker Black 25 mm Unifiber UF590000003

Description:

The Collar MK5 Double-Pin Locker is a precision spare part designed to securely lock 25 mm booms to mast or extension fittings on Unifiber MK5 systems. Constructed from a high-strength, UV‑stabilized reinforced nylon body with corrosion‑resistant stainless steel pins, it delivers reliable performance in saltwater and fresh water environments. The double‑pin locking mechanism provides a positive, wobble‑free connection that reduces play and improves rig control and sail trim responsiveness. Its low‑profile, compact shape minimizes snagging and contributes to a clean, streamlined rig layout. Durable materials and simple installation make this collar a long‑lasting service part that keeps your boom interface safe and precise under repeated loads. Compatible with Unifiber MK5 booms and most 25 mm boom profiles, it is an essential spare for sailors who demand consistent performance and easy maintenance.

Key Features:

• Reinforced, UV‑stabilized nylon body for high strength and impact resistance
• Corrosion‑resistant stainless steel double pins for secure locking
• Double‑pin design ensures a positive, wobble‑free connection under load
• Low‑profile ergonomic shape reduces snagging and windage
• Compact and lightweight for minimal added bulk to the rig
• Easy to install and remove for fast maintenance and replacement
• Built to withstand repeated saltwater exposure and heavy use
• Direct compatibility with Unifiber MK5 boom systems and other 25 mm profiles

Specifications:

Manufacturer: Unifiber
SKU: UF590000003
Material: Reinforced UV‑stabilized nylon body; stainless steel pins
Size/Dimensions: Designed to fit 25 mm boom profiles (compact collar design)
Weight: Lightweight, approximately 20–30 g (varies by configuration)
Color: Black
Size: 25 mm
Category: Spare Parts
Age Group: Adults
Gender: Unisex

Recommended Use:

Ideal for recreational to advanced and professional windsurfers who need a dependable boom locking solution. Best suited for on‑water sailing, freeride, wave, and race conditions where rig stability and precise sail control matter. Performs reliably in both coastal saltwater and inland freshwater environments, including choppy or windy conditions. Recommended to pair with Unifiber MK5 booms and regular rig maintenance—inspect pins and collar periodically for wear and rinse with fresh water after heavy salt exposure.