Designed for speed, efficiency, and exceptional handling, Lewmar’s Synchro Blocks combine advanced engineering with practical innovation. Featuring scientifically optimised geometry, a free-spinning bearing, and a self-aligning head, these blocks reduce friction and deliver up to 40% greater efficiency compared to standard budget blocks in mainsheet systems. Every component works in harmony with the rope’s movement, ensuring smoother power transfer from deck to sail and significantly reducing rope wear.