Blocks - Harken

Harken soft-attach Fly blocks are designed to provide strength beyond mass, providing big power in a low-aero package. Designed specifically for high-tech line, these efficient blocks have an incredible working load for their small size. 18 mm blocks...

The Harken BlackMagic Cage & Bearing Assembly is a precision spare part designed for the BlackMagic loop block series. Whether you’re repairing a 57 mm or 75 mm unit, this cage and bearing rebuild kit restores the block’s performance,...

Mount fixed leads on boats with bulwarks to keep sidedeck clear. Specifications Height (in): 2 1/8" ( 53 mm ) Length (in): 2" ( 51 mm ) Sheave Ø (in): 1 1/2" ( 38 mm ) Width (in): 7/8" ( 22 mm ) Weight (oz): 2.1 oz. ( 60 g ) Maximum line Ø...

Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. Specifications Length (in): 1...

The Harken Carbo Ratchet Block with Becket combines lightweight strength with advanced ratchet technology, making it ideal for high-load applications in marine environments. Features Material - Durable, UV-stabilized carbon-black infused...

Power3 ratchet blocks provide sailors that race small one-designs with three holding-power options to handle a variety of wind and sea conditions. More choices allow sailors to fine-tune their set-ups in tandem with the purchase that provides the...

The 9050 U-adaptor allows 57/75 mm Carbo blocks to be attached to 170 Hexa-Cat Base or other blocks with 12.7 mm (1/2") posts and 6.35 mm (1/4") pins. Specifications Weight (oz): 0.92 oz. ( 26 g ) Maximum working load (lb): 1500 lb ( 680 kg...

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Specifications Sheave Ø...

The Harken Midrange Block Series is engineered for the demanding loads of medium and large offshore boats. Built with a robust frame and precision-machined sheaves, these blocks deliver smooth, efficient trimming and releasing under any condition. The...

The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless. Specifications Sheave...

The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless. Specifications Sheave...

These multipurpose blocks are a must on racing yachts of all sizes. Opening sideplates make them easy to deploy, allowing crew to quickly fasten them wherever needed—perfect for temporary leads, line deflection, and static line functions requiring...

Harken recommend equipping asymmetric/code zero furling systems with lead blocks for safe furling from the cockpit. These stanchion mounted leads guide furling  line outboard to keep sidedecks clear. Specifications Weight (g) 123 g Maximum...

Standard blocks with stainless steel cheeks and nylon sheave. Sheave diameter 34 mm. Specifications Cheek material: Stainless steel Sheave material: Nylon Sheave diameter: 34 mm Rope diameter: Up to 10 mm

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Harken recommends equipping every system with Carbo lead blocks for safe furling from the cockpit. The 7404 kit's lightweight, UV-stabilized Carbo blocks run exclusively on ball bearings for fast trimming under any load. It provides a complete system for...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...

Element blocks introduce side-plates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a...