Harken Block Range
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Harken 29mm Carbo Clew Block Assembly
Regular price £36.79Sale price £36.79 Regular priceUnit price / per£42.05Sale -
Harken 16mm Airblock Single Block Fork Head
In stock
Regular price £19.95Sale price £19.95 Regular priceUnit price / per£27.73Sale -
Harken Micro Forkhead Block
Regular price £23.31Sale price £23.31 Regular priceUnit price / per£26.64Sale -
Harken 29mm Carbo Double Fixed Block
Regular price £44.34Sale price £44.34 Regular priceUnit price / per£50.67Sale -
Harken 16mm Airblock Hook-in Halyard Block
In stock
Regular price £33.88Sale price £33.88 Regular priceUnit price / per£38.72Sale -
Harken Dinghy Clew Hook with Block
In stock
Regular price £40.18Sale price £40.18 Regular priceUnit price / per£45.92Sale -
Harken 16mm Airblock Single Block
In stock
Regular price £16.88Sale price £16.88 Regular priceUnit price / per£19.29Sale -
Harken 16mm Airblock Single Block and Becket
In stock
Regular price £19.41Sale price £19.41 Regular priceUnit price / per£22.18Sale -
Harken 16mm Airblock Double Inline Block
In stock
Regular price £35.23Sale price £35.23 Regular priceUnit price / per£40.26Sale -
Harken 16mm Airblock Double Block and Becket
In stock
Regular price £29.95Sale price £29.95 Regular priceUnit price / per£44.10Sale -
Harken 16mm Airblock Triple Block
In stock
Regular price £49.85Sale price £49.85 Regular priceUnit price / per£56.97Sale -
Harken 16mm Airblock Triple Block and Becket
Regular price £52.46Sale price £52.46 Regular priceUnit price / per£59.95Sale -
Harken 16mm Airblock Cheek Block
In stock
Regular price £19.64Sale price £19.64 Regular priceUnit price / per£22.44Sale -
Harken 16mm Airblock Single Block with Swivel Shackle
In stock
Regular price £30.55Sale price £30.55 Regular priceUnit price / per£34.91Sale -
Harken 16mm Airblock Exit Block
In stock
Regular price £47.04Sale price £47.04 Regular priceUnit price / per£53.76Sale -
Harken 16mm Airblock Pivot Cheek Block
In stock
Regular price £21.16Sale price £21.16 Regular priceUnit price / per£24.18Sale -
Harken 16mm Airblock Single Flip Flop Block
Regular price £44.69Sale price £44.69 Regular priceUnit price / per£51.07Sale -
Harken 16mm Airblock Single Block with Lacing Eye
In stock
Regular price £25.56Sale price £25.56 Regular priceUnit price / per£29.21Sale -
Harken Micro Single with Lacing Eye Block
In stock
Regular price £23.74Sale price £23.74 Regular priceUnit price / per£27.13Sale -
Harken 25mm High Tension Single Forkhead Block with Becket
In stock
Regular price £38.95Sale price £38.95 Regular priceUnit price / per£55.93Sale -
Harken 16mm Airblock Single Block with Narrow Ferrule Head
In stock
Regular price £19.51Sale price £19.51 Regular priceUnit price / per£22.30Sale -
Harken 51mm High Tension Block
Regular price £108.94Sale price £108.94 Regular priceUnit price / per£124.50Sale -
Harken T18 Carbo Air Block 18mm Single
In stock
Regular price £25.71Sale price £25.71 Regular priceUnit price / per£29.38Sale -
Harken T18 Carbo Air Block 18mm Double Block
In stock
Regular price £44.28Sale price £44.28 Regular priceUnit price / per£50.61Sale -
Harken 29mm Carbo Soft-Attach Double Block
In stock
Regular price £48.62Sale price £48.62 Regular priceUnit price / per£55.56Sale -
Harken 40mm T2 Carbo Soft-Attach Double Block
Regular price £70.75Sale price £70.75 Regular priceUnit price / per£80.86Sale -
Harken 57mm Carbo T2 Soft-Attach Double Block
Regular price £99.72Sale price £99.72 Regular priceUnit price / per£113.97Sale -
Harken 29mm T2 Soft Attach Block
In stock
Regular price £22.95Sale price £22.95 Regular priceUnit price / per£32.22Sale -
Harken 40mm T2 Soft Attach with SK 75 LoopBlock
In stock
Regular price £47.50Sale price £47.50 Regular priceUnit price / per£54.28Sale -
Harken 40mm T2 Soft Attach Block
In stock
Regular price £42.41Sale price £42.41 Regular priceUnit price / per£48.47Sale -
Harken 57mm T2 Soft Attach with SK 75 Loop Block
In stock
Regular price £59.54Sale price £59.54 Regular priceUnit price / per£68.05Sale -
Harken 57mm T2 Soft Attach Block
In stock
Regular price £53.17Sale price £53.17 Regular priceUnit price / per£60.76Sale -
SaleHarken 40mm Block
In stock
Regular price £30.57Sale price £30.57 Regular priceUnit price / per£34.94Sale -
Harken 40 mm T2 Soft-Attach Ratchamatic Block
In stock
Regular price £72.17Sale price £72.17 Regular priceUnit price / per£82.48Sale -
Harken 57 mm T2 Soft-Attach Ratchamatic Block
In stock
Regular price £86.57Sale price £86.57 Regular priceUnit price / per£98.94Sale -
Harken 57mm Carbo Ratchet Single Block with Swivel Head Red Sheave
In stock
Regular price £89.17Sale price £89.17 Regular priceUnit price / per£101.91Sale -
Harken 29mm Carbo Air Block with Removable Bolt
In stock
Regular price £28.95Sale price £28.95 Regular priceUnit price / per£32.22Sale -
Harken 57 mm T2 Soft-Attach Ratchamatic Block
Regular price £90.92Sale price £90.92 Regular priceUnit price / per£103.91Sale -
Harken 57mm Carbo Ratchamatic Single Block with Swivel Head Red
In stock
Regular price £125.67Sale price £125.67 Regular priceUnit price / per£143.62Sale -
Harken 18mm Fly Carbo T2 Narrow Head Block
In stock
Regular price £25.71Sale price £25.71 Regular priceUnit price / per£29.38Sale -
Harken 57mm Carbo Ratchamatic HTE Single Block with Swivel Head
Regular price £125.67Sale price £125.67 Regular priceUnit price / per£143.62Sale -
Harken 29mm Bullet Cheek Block
In stock
Regular price £21.16Sale price £21.16 Regular priceUnit price / per£24.18Sale -
Harken 29mm Zircon Single Block
In stock
Regular price £42.52Sale price £42.52 Regular priceUnit price / per£48.59Sale -
Harken 29mm Zircon Single With Becket Block
Regular price £46.56Sale price £46.56 Regular priceUnit price / per£53.21Sale -
Harken 29mm Zircon Double Block
Regular price £74.90Sale price £74.90 Regular priceUnit price / per£85.60Sale -
Harken 29mm Zircon Double With Becket Block
Regular price £81.99Sale price £81.99 Regular priceUnit price / per£93.70Sale -
Harken 29mm Zircon Treble Block
Regular price £105.27Sale price £105.27 Regular priceUnit price / per£120.31Sale -
Harken 29mm Bullet Double Upright Block
Regular price £48.91Sale price £48.91 Regular priceUnit price / per£55.90Sale -
Harken 29mm Bullet Single Thru Deck Wire Block
Regular price £33.63Sale price £33.63 Regular priceUnit price / per£38.43Sale -
Harken Kicker/Vang Top Block & Key for ILCA & Laser
In stock
Regular price £45.95Sale price £45.95 Regular priceUnit price / per£54.95Sale
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More Info
Smooth Control: Harken Blocks & Pulleys
Engineered for strength and efficiency, Harken blocks are the industry standard for sailors who demand precision. Whether you are trimming a mainsheet on a grand prix racer or simplifying a control line on a day boat, Harken’s hardware provides the reliability and low-friction performance needed to handle high loads with ease.
Innovation in Motion
From the iconic Carbo AirBlocks® to the high-load Black Magic® range, Harken focuses on reducing weight while maximizing power.
- Low Friction Technology: Ball bearing and roller bearing systems designed for immediate release and smooth trimming.
- Lightweight Durability: High-strength resins and salt-water resistant metals ensure longevity in the harshest marine environments.
- Versatile Configurations: Available in single, double, triple, fiddle, and tie-on versions to suit every rigging need.
- The Choice of Champions: Trusted by Olympic athletes and America’s Cup teams for their consistency and mechanical advantage.
Choose the Right Range
| Series | Best For | Key Characteristic |
|---|---|---|
| Carbo AirBlocks® | Dinghies & Small Keelboats | Lightweight, fiber-reinforced nylon |
| Black Magic® | Offshore & High-Performance | High-load roller bearings & sleek finish |
| Element Blocks | Cruising & Durability | Robust, simple, and cost-effective |
| Micro & Bullet | Control Lines & Vangs | Compact design for small-diameter ropes |
Expert Tip: Regularly flush your Harken blocks with fresh water to remove salt and grit. This simple step keeps the bearings spinning freely and prevents premature wear.
Ready to optimize your rig? Explore our comprehensive collection of Harken blocks below and find the perfect mechanical advantage for your boat.