Harken 371 29mm Carbo Clew Block Assembly

Harken 29mm Clew Block is a compact, lightweight solution designed for efficient sheeting and control on performance sails. Part of the trusted Carbo Air range, this block delivers smooth, low-friction operation with excellent strength in a streamlined, low-profile design.

Specifically suited for clew attachment, this block helps optimise sail shape and control by reducing friction and improving line efficiency. Its lightweight construction minimises added weight at the sail, enhancing overall performance, particularly on dinghies and high-performance small boats.

Built with durable, fibre-reinforced sideplates and low-friction ball bearings, the 29mm Clew Block provides reliable performance under load, making it ideal for jib sheets, control lines and other sail handling systems.

Specifications

Length: 124 mm / 4 7/8 in

Weight: 51 g / 1.8 oz

Sheave Diameter: 29 mm / 1 1/8 in

Maximum Line Diameter: 8 mm / 5/16 in

Maximum Working Load: 150 kg / 330 lb

Breaking Load: 454 kg / 1000 lb

Key Features

• Designed specifically for clew attachment and sail control
• Low-friction Carbo Air construction for smooth performance
• Lightweight design reduces weight at the sail
• Compact, streamlined profile for minimal drag
• Fibre-reinforced sideplates for strength and durability
• High working load capacity for its size
• Ideal for jib sheets and sail control systems
• Suitable for dinghies and performance sailing setups
• Reliable performance for racing and active sailing use