Lewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling. They use 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. Plain bearing blocks are typically used for heavy and static loads in halyard tuning, mainsheet systems, mast foot blocks, masthead blocks, and boom vangs.
