b'40 mm Zircon Cat Mainsheet SystemThis is the newest entrant in the ongoing process of creating high-efficiency mainsheet systems that keeps up with ever more aggressive sailing styles in the Olympic NACRA 17 or other Grand Prix multihulls. At the heart of the 2801 system are 40 mm Zircon sheaves that provide incredible friction reduction while generating 30% less airflow disruption and clearing the tiller more easily. Theres a swivel on both top and bottom units to allow for better alignment with load and position of the crew. Sailors are still free to select any of the Harken Power3 ratchet sheaves to match weather conditions and to use the system in 10:1, 11:1, or 12:1 mode to better fit their sailing styles. Sales for the second half of 2023 and 2024 point to excellent adoption by top-level teams during the Marseille Olympic quad. 2801SheaveMax line Maximum BreakingPartWeightworking load loadNo. Description in mm oz g in mm lb kg lb kg2801 40 mm Zircon Catamaran Mainsheet System 1.5x grip 57 mm ratchet 1 9/16 40 31.3 888 5/168 1200 545 3600 1636 MOUNT WITHSOFT ATTACHMENTPart no.3415 Attach aZircon block with one of our versatile soft shackles. Choose 70mm soft shackle with a unique T-Close in 4mm lineperfectly suited for these blocks. 17'