Harken 2659SP 40mm Carbo Block 90 degree Fixed Head & Removable Pin

Harken 2659SP 40mm 90° Fixed Head Carbo Block with Removable Pin is a compact, high-performance solution designed for fixed mounting applications where strength, low friction and reliability are essential. Ideal for attaching to fixed loops on booms and masts, this block delivers smooth, efficient line handling in a lightweight design.

Part of the proven Carbo AirBlocks® range, this block is up to 60% stronger and 30% lighter than traditional Classic blocks. The 90° fixed head ensures consistent alignment, making it perfect for controlled line routing in high-load systems.

Engineered with fibre-reinforced nylon-resin sideplates, stainless steel ball bearings and a precision sheave, this block offers an exceptional strength-to-weight ratio and ultra-smooth operation. All components are UV-stabilised with carbon black for long-lasting durability in harsh marine environments.

Suitable for jib and mainsheet systems on high-performance dinghies, as well as loaded control lines on small keelboats, this block provides dependable performance across a wide range of sailing applications.

Specifications

Length: 75 mm

Weight: 44 g

Sheave Diameter: 40 mm

Maximum Line Diameter: 10 mm

Maximum Working Load: 220 kg

Breaking Load: 735 kg

Key Features

• 90° fixed head for stable, consistent alignment
• Removable pin for easy attachment to fixed loops
• Carbo AirBlocks® design – up to 60% stronger and 30% lighter than Classic blocks
• Low-friction performance with high-load ball bearings
• Fibre-reinforced sideplates for exceptional strength-to-weight ratio
• UV-stabilised components for long-lasting durability
• Compact and lightweight for performance sailing
• Ideal for jib and mainsheet systems
• Suitable for vangs, cunninghams, outhauls and control lines
• Perfect for dinghies and small keelboats