Lewmar 50mm Synchro Block - Single

The Lewmar 50mm Synchro Block in single configuration is a precision rigging component designed for sailors and boaters who demand reliable, smooth control over lines and halyards. This block serves as a critical link in your pulley system, whether managing mainsail trim on a cruising sailboat or coordinating complex deck operations on a larger vessel.

Built by Lewmar—a trusted name in the marine industry—this single block integrates into existing rigging setups where synchronization and efficient load distribution are essential. The 50mm Synchro Block features engineered internal geometry that coordinates line movement with minimal friction, allowing crews to manage multiple control points without tangling or binding.

Ideal for cruising sailors upgrading aging rigging systems, racing crews fine-tuning performance, and boat owners retrofitting their vessels, this block is compact enough for tight deck spaces while remaining robust enough to handle typical working loads. Marine-grade materials ensure corrosion resistance in both saltwater and freshwater environments.