Windex Masthead Wind Indicator 15 MK2 for 15–40 ft Boats — Birdspike Included, Sapphire‑Jewel Bearing

Windex 15 MK2 with birdspike is a complete mast-mounted wind direction indicator built for 15–40 ft sailboats, offering sensitive, reliable wind readings and a raised spike to discourage birds from perching on the mast.

Whether you race or cruise, knowing true wind direction at the masthead is essential for trim, course decisions, and sail changes. The Windex 15 MK2 pairs a proven sapphire-jewel suspension with a full accessory kit — rod, index arms, mast socket and an extended bird-proof spike — so you get ready-to-fit performance and fewer interruptions from landing birds. This compact unit is designed for boats roughly 15 to 40 feet long where accurate, visible wind indication at the highest point on the rig improves handling and situational awareness.

How does the Windex 15 MK2 give accurate wind direction in light and strong air?

The Windex uses a sapphire jewel suspension bearing that minimizes friction, allowing the vane to respond to very light breezes while remaining stable in gusts. That sensitivity means quicker, more reliable feedback for sail trim and helm adjustments.

• Sapphire-jewel bearing for low-friction rotation.
• Balanced vane profile reduces flutter in gusty conditions.
• Index arms provide a clear visual reference for leeway and sail trim.
• Engineered to remain accurate from light air through stronger wind ranges.

What comes in the complete Windex 15 MK2 package and how easy is it to install?

The unit ships with everything needed for masthead mounting: the wind vane unit, a supporting rod, index arms, a mast socket and the bird-proof spike. Installation is straightforward for anyone comfortable with common rigging tasks and basic hand tools.

• All mounting components included for a tidy masthead fit.
• Compact footprint fits most 15–40 ft spars without modification.
• Simple alignment steps: attach socket, drop in rod, secure vane and index arms.
• Lightweight construction eases handling during fitting aloft or on the deck.

Why add the extended bird-proof spike and what are its benefits?

The included bird spike rises about 190 mm (7.5") above the vane to reduce perching and fouling on the masthead. Keeping birds off the top of the rig lowers mess, reduces the risk of displaced instruments, and helps maintain an unobstructed wind indication.

• Raised spike discourages birds from landing at the masthead.
• Less droppings and debris preserve vane visibility and movement.
• Helps prevent birds from dislodging or damaging delicate rigging parts.
• Quick to attach and integrates cleanly with the vane's profile.

How does the Windex 15 MK2 compare on value and reliability for sailors?

Windex builds a long-standing reputation for dependable, low-maintenance wind indicators. The 15 MK2 offers high sensitivity, a full accessory kit, and the added bird spike — all at a price point that makes it a strong value for cruising and club-racing sailors wanting proven performance without extras to buy.

• Proven design trusted by sailors worldwide for consistent readings.
• Low maintenance thanks to durable materials and a sealed bearing area.
• Complete package avoids additional purchases for typical installations.
• Appropriate for both cruising and competitive contexts on 15–40 ft boats.

Who is this for: The Windex 15 MK2 with birdspike is aimed at owners and skippers of 15–40 ft sailboats who want an accurate, easy-to-install masthead wind indicator that stays visible and functional in varied conditions. It suits cruisers who prefer low-maintenance gear and club racers who value quick, reliable wind information while making sail and trim decisions.