TB Mainsheet Car With Upstand, Pair Of Double Control Line Sheaves & Cleats

Complete Traveller Control for High-Load Applications

The Lewmar TB Mainsheet Car with Upstand, Pair of Double Control Line Sheaves & Cleats is engineered as a fully integrated solution for demanding mainsheet traveller systems. Designed for performance cruising yachts and race-ready setups, it combines structural strength, efficient line management, and secure control into a single, high-performance assembly.

Track-Bearing (TB) High-Load Design

At its core, the Track-Bearing (TB) configuration is optimised to transmit mainsheet loads directly into the traveller track, maintaining precise alignment and smooth travel under heavy load. This design ensures predictable, low-friction movement during trimming and easing, even in dynamic sailing conditions with powerful rigs.

Integrated Upstand for Optimal Line Leads

The built-in upstand elevates control-line sheaves above the car, improving lead angles and keeping lines clear when unloaded. This enhances ergonomics, reduces the risk of snagging, and ensures clean, efficient routing into clutches or cleats, particularly valuable in high-traffic cockpit areas.

Double Control Line Sheaves for Balanced Performance

Featuring a pair of double control line sheaves, the car enables smooth, balanced control from both sides of the traveller. This multi-sheave configuration distributes load evenly, reduces friction, and improves responsiveness during trimming, while helping to minimise wear on control lines during heavy use.

Integrated Cleats for Positive Line Holding

Built-in cleats allow control lines to be locked off quickly and securely once the traveller is set. This integrated solution eliminates the need for additional deck hardware, improves handling efficiency, and ensures that trim settings are maintained under sustained load with confidence.

Smooth, Reliable Operation

Precision-engineered bearing surfaces and sheave geometry deliver consistent, low-friction movement across the full range of traveller adjustment. This smooth operation enhances sail-shape control, reduces crew effort, and supports consistent performance during intensive sailing and repeated manoeuvres.

Marine-Grade Construction

Manufactured from durable, corrosion-resistant marine-grade materials, the TB Mainsheet Car is built to withstand sustained high loads, shock forces, and harsh marine environments. Its robust construction ensures long-term reliability and dependable performance for both offshore cruising and racing applications.

Clean, System-Led Integration

By integrating load handling, control-line sheaves, upstand guidance, and cleating into a single component, the design reduces system complexity and deck clutter. The result is a cleaner, more efficient deck layout with improved ergonomics and professional-grade functionality.

Application & Compatibility

Designed for seamless integration with Lewmar traveller track systems, the TB Mainsheet Car with Upstand, Double Sheaves & Cleats is suitable for both new installations and professional refits. Ideal for high-load mainsheet control on performance cruising and racing yachts, it represents a complete, system-matched solution backed by Lewmar’s proven expertise in high-performance sail-handling hardware.