Lewmar 50mm Synchro Block - Single | Marine Rope Pulley for Smooth Sailing

50mm Synchro Block - Single

Lewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling. Using a combination of scientifically optimized block geometry, a Free-Spin bearing, and a self-aligning head to reduce friction and increase efficiency by up to 40%, over budget blocks on mainsheet systems.

Each component is perfectly synchronized with the movement of the rope, providing you with an easier, smoother transfer of power from deck to sail and less wear on your rope.

Features:

• Stainless steel strap for improved strength and longer service life
• Stiff glass fiber reinforced cheeks to prevent lines from wedging
• Innovative design with tool-free sliding swivel locking mechanism

Technical Specifications:

• Working Load Limit - 990lb
• Weight - 2.36oz
• Maximum Line Size - .39" (10mm)

*Sold as an Individual

The Lewmar 50mm Synchro Block, part number 29925001BK, is a high-performance marine pulley designed to enhance the efficiency and handling of your sailing rig. Crafted with precision, this single synchro block features a stainless steel strap for increased durability and a longer service life, ensuring reliable performance even in demanding marine environments. Its stiff glass fiber reinforced cheeks prevent lines from wedging, reducing wear and tear on your ropes and improving overall safety. The innovative design incorporates a tool-free sliding swivel locking mechanism, allowing quick and easy adjustments without the need for additional tools, which makes installation and maintenance straightforward. The Synchro Block's scientifically optimized geometry, combined with a free-spin bearing and self-aligning head, reduces friction and increases efficiency by up to 40% compared to traditional blocks. This results in a smoother transfer of power from the deck to the sail, providing you with more precise control and less effort during operation. With a working load limit of 990 pounds and capable of handling line sizes up to 0.39 inches (10mm), this pulley is suitable for a wide range of sailing applications, especially mainsheet systems requiring reliable and efficient performance. Weighing just over 2.36 ounces, the Lewmar Synchro Block is lightweight yet robust, making it an excellent addition to any serious sailor’s equipment. Whether you're upgrading existing hardware or outfitting a new rig, this pulley offers the durability, efficiency, and ease of use needed for demanding marine adventures. Sold individually, it is an essential component for ensuring smooth, safe, and efficient sailing operations.

Features:

• Stainless steel strap for improved strength and longer service life

• Stiff glass fiber reinforced cheeks to prevent lines from wedging

• Tool-free sliding swivel locking mechanism for quick adjustments

• Optimized block geometry and free-spin bearing for up to 40% efficiency increase

• Self-aligning head reduces friction and enhances handling