Zircon Triple Block with Becket, 40mm
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Harken Zircon Triple Block with Becket, 40mm
The Harken Zircon Triple Block is a robust and versatile three-sheave block from the popular Zircon series, engineered for demanding line guidance on board. At the core of the Zircon's performance are industrial ceramic ball bearings mounted inside caged races — the cages keep the bearings separated so they don't bunch, touch, or stop each other. The result is the most efficient small-boat block Harken has ever made, delivering smooth and responsive operation even under heavy loads.
Designed for more complex trimming systems, this block features three 40mm sheaves arranged side by side, allowing multiple lines to be guided efficiently and flexibly at the same time. Zircon blocks help trimmers match sail shapes to new conditions immediately, making them a performance-critical component for racing and performance sailing. The low-friction ball bearings ensure all three sheaves run exceptionally smoothly, providing efficient power transfer and reducing trimming effort.
Its robust construction in carbon fiber reinforced plastic makes this triple block a reliable choice for sheets, halyards, runners, and other heavily used control lines. The compact size and high strength-to-weight ratio make it a versatile all-rounder for both recreational and performance sailors seeking a long-lasting solution for managing multiple lines with ease.
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