Synchro Stand-Up Block

Effortless Line Access at the Deck

The Lewmar Synchro Stand Up Block is designed to improve sail-handling efficiency by ensuring control lines remain upright, accessible, and ready for use. Engineered for performance cruising and racing yachts, it delivers smooth, responsive line control in high-workload deck environments where fast engagement and reliability.

Stand-Up Functionality for Dynamic Sail Handling

Featuring an integrated spring-loaded stand-up mechanism, the block automatically supports the sheave in an upright position when unloaded. This keeps lines clear of the deck, making them easier to locate, engage, and lead into clutches or winches. The stand-up design reduces the risk of fouling and improves handling speed during manoeuvres such as tacking, gybing, or rapid trim adjustments. 

Advanced Synchro Bearing Technology

As part of Lewmar’s Synchro range, the Stand-Up block incorporates precision bearing technology engineered to minimise friction under load. This advanced system delivers exceptionally smooth rotation and responsive handling, reducing trimming effort and improving control accuracy even during repeated adjustments or prolonged sailing. 

Marine-Grade composite Construction

Manufactured from durable, marine-grade composite materials, the Synchro Stand Up Block is built to withstand sustained loads, saltwater exposure and frequent cycling. Reinforced side plates and a carefully profiled sheave ensure dimensional stability, resistance to wear, and long-term reliability in demanding offshore and performance sailing conditions.

Smooth, Predictable Performance

Optimised rope alignment and efficient load transfer promote clean, low-friction rope flow during trimming and easing. Reduced energy loss enhances handling comfort while helping protect running rigging from unnecessary abrasion, supporting consistent performance throughout intensive sailing programmes.

Installation & Application

Well-suited to control lines, deck organisers, and leads to clutches or winches, the Lewmar Synchro Stand Up Block integrates seamlessly into modern performance-focused deck layouts. Suitable for both new builds and high-quality refits, it provides a professional-grade solution backed by Lewmar’s long-standing expertise in sail-handling and deck hardware.