Optiparts Mainsheet Racing System The Optiparts Racing Mainsheet System is a complete high-performance mainsheet system developed for competitive Optimist sailors. Combining the proven performance of the Windesign ratchet block with Optiparts ball bearing blocks, the system delivers exceptionally smooth trimming, reduced friction, and excellent mainsheet control. All components have been carefully selected to create a lightweight, efficient mainsheet system that is ready for immediate installation. Features: Complete racing mainsheet system Windesign 57 mm ratchet block Low-friction Optiparts ball bearing blocks Smooth and efficient mainsheet trimming Ready to install Ideal for competitive Optimist sailing Set includes: 6 m polypropylene mainsheet EX1377 Windesign 57 mm ratchet block EX1299 38 mm ball bearing block EX1315 38 mm ball bearing block with becket EX1316 2 × 5 mm plate shackle EX1302 Snap shackle EX1372 Stainless steel block spring EX1304
