Harken Block Range
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Harken 29mm Bullet Single Block
In stock
Regular price £18.65Sale price £18.65 Regular priceUnit price / per£21.31Sale -
Harken 29mm Bullet Single Block and Becket
In stock
Regular price £22.22Sale price £22.22 Regular priceUnit price / per£25.39Sale -
Harken 29mm Bullet Double Block
Regular price £75.51Sale price £75.51 Regular priceUnit price / per£86.30Sale -
Harken 29mm Bullet Double Block and Becket
Regular price £54.25Sale price £54.25 Regular priceUnit price / per£62.00Sale -
Harken 29mm Bullet Triple Block
In stock
Regular price £70.55Sale price £70.55 Regular priceUnit price / per£80.63Sale -
Harken 29mm Bullet Triple Block and Becket
Regular price £75.51Sale price £75.51 Regular priceUnit price / per£86.30Sale -
Harken 29mm Bullet Thru Deck Block
In stock
Regular price £27.13Sale price £27.13 Regular priceUnit price / per£31.00Sale -
Harken 29mm Bullet Dual In Line Block
Regular price £43.07Sale price £43.07 Regular priceUnit price / per£49.22Sale -
Harken 29mm Bullet Upright Block
In stock
Regular price £27.55Sale price £27.55 Regular priceUnit price / per£31.49Sale -
Harken 29mm Bullet Single Block Wire
In stock
Regular price £24.85Sale price £24.85 Regular priceUnit price / per£28.40Sale -
Harken 29mm Bullet Upright Block Wire Lead
Regular price £34.16Sale price £34.16 Regular priceUnit price / per£39.04Sale -
Harken 29mm Bullet Cheek Block Wire
In stock
Regular price £29.96Sale price £29.96 Regular priceUnit price / per£34.24Sale -
Harken 29mm Bullet Cheek Pivot Block
Regular price £29.93Sale price £29.93 Regular priceUnit price / per£34.21Sale -
Harken 38mm Big Bullet Single Block and Becket
Regular price £37.76Sale price £37.76 Regular priceUnit price / per£43.15Sale -
Harken 38mm Big Bullet In-Line Exit Block
Regular price £68.73Sale price £68.73 Regular priceUnit price / per£78.55Sale -
Harken 38mm Big Bullet Single Block with Swivel Head
In stock
Regular price £43.83Sale price £43.83 Regular priceUnit price / per£50.09Sale -
Harken 57mm Carbo Ratchet Single Block with Swivel Head
In stock
Regular price £84.90Sale price £84.90 Regular priceUnit price / per£97.03Sale -
Harken 57mm Carbo Ratchet Single Block and Becket with Swivel Head
Regular price £94.64Sale price £94.64 Regular priceUnit price / per£108.16Sale -
Harken 57mm Carbo Ratchet Cheek Block
Regular price £91.60Sale price £91.60 Regular priceUnit price / per£104.69Sale -
Harken 57mm Carbo Ratchet Single Block with Swivel Head/150 Cam-Matic
Regular price £188.75Sale price £188.75 Regular priceUnit price / per£215.71Sale -
Harken 57mm Carbo Ratchet Single Block Swivel Head/150 Cam-Matic and Becket
Regular price £198.49Sale price £198.49 Regular priceUnit price / per£226.85Sale -
Harken 57mm Carbo Ratchet Triple Block with Swivel Head/150 Cam-Matic
Regular price £280.33Sale price £280.33 Regular priceUnit price / per£320.38Sale -
Harken 38mm Big Bullet Upright Lead Block
In stock
Regular price £46.74Sale price £46.74 Regular priceUnit price / per£53.42Sale -
Harken 38mm Big Bullet Double Upright Lead Block
Regular price £83.00Sale price £83.00 Regular priceUnit price / per£94.86Sale -
Harken Micro Single Block
In stock
Regular price £14.32Sale price £14.32 Regular priceUnit price / per£16.37Sale -
Harken Micro Single and Becket Block
In stock
Regular price £16.57Sale price £16.57 Regular priceUnit price / per£18.94Sale -
Harken Micro Double Block
In stock
Regular price £36.14Sale price £36.14 Regular priceUnit price / per£41.30Sale -
Harken Micro Double Block and Becket
In stock
Regular price £39.00Sale price £39.00 Regular priceUnit price / per£44.57Sale -
Harken Micro Triple Block
Regular price £51.63Sale price £51.63 Regular priceUnit price / per£59.00Sale -
Harken Micro Triple Block and Becket
Regular price £52.83Sale price £52.83 Regular priceUnit price / per£60.38Sale -
Harken Micro Traveller Pair Block
Regular price £31.71Sale price £31.71 Regular priceUnit price / per£36.24Sale -
Harken Micro Cheek Block
In stock
Regular price £19.43Sale price £19.43 Regular priceUnit price / per£22.21Sale -
Harken Micro Single Block with Shackle Head
Regular price £20.70Sale price £20.70 Regular priceUnit price / per£23.66Sale -
Harken Micro Single Block with Shackle and Becket
Regular price £22.98Sale price £22.98 Regular priceUnit price / per£26.26Sale -
Harken Micro Single Through Deck Sheave Block
In stock
Regular price £34.49Sale price £34.49 Regular priceUnit price / per£39.42Sale -
Harken Micro Upright Block
In stock
Regular price £19.99Sale price £19.99 Regular priceUnit price / per£22.85Sale -
Harken Micro Fiddle Block with V-jam Block
Regular price £42.13Sale price £42.13 Regular priceUnit price / per£48.15Sale -
Harken Micro Fiddle block with V-jam and Becket Block
Regular price £45.93Sale price £45.93 Regular priceUnit price / per£52.49Sale -
Harken 57mm Carbo Single Block with Swivel Head
In stock
Regular price £54.43Sale price £54.43 Regular priceUnit price / per£62.21Sale -
Harken 57mm Carbo Single Block with Swivel Head and Becket
Regular price £64.35Sale price £64.35 Regular priceUnit price / per£73.54Sale -
Harken 57mm Carbo Double Block With Swivel Head
Regular price £115.69Sale price £115.69 Regular priceUnit price / per£132.22Sale -
Harken 57mm Carbo Double Block And Becket With Swivel Head
Regular price £125.59Sale price £125.59 Regular priceUnit price / per£143.53Sale -
Harken 57mm Carbo Triple Block with Swivel Head
Regular price £162.13Sale price £162.13 Regular priceUnit price / per£185.29Sale -
Harken 57mm Carbo Triple Block with Swivel Head and Becket
Regular price £172.05Sale price £172.05 Regular priceUnit price / per£196.63Sale -
Harken 57mm Carbo Cheek Block
In stock
Regular price £50.02Sale price £50.02 Regular priceUnit price / per£57.17Sale -
Harken 40mm Carbo Ratchet Single Block with Swivel Head
In stock
Regular price £71.92Sale price £71.92 Regular priceUnit price / per£82.19Sale -
Harken 40mm Carbo Ratchet Single Block and Becket with Swivel Head
In stock
Regular price £77.96Sale price £77.96 Regular priceUnit price / per£89.10Sale -
Harken 40mm Carbo Ratchet Single Block with Swivel Head/Carbo-Cam
Regular price £151.58Sale price £151.58 Regular priceUnit price / per£173.23Sale -
Harken 40mm Carbo Ratchet Single Block Swivel Head/ Carbo-Cam and Becket
Regular price £157.65Sale price £157.65 Regular priceUnit price / per£180.17Sale -
Harken 40mm Carbo Ratchet Triple Block with Swivel Head/Carbo-Cam
Regular price £235.59Sale price £235.59 Regular priceUnit price / per£269.25Sale -
Harken 40mm Carbo Ratchet Triple Block Swivel Head/Carbo-Cam and Becket
Regular price £241.64Sale price £241.64 Regular priceUnit price / per£276.16Sale -
Harken 40mm Carbo Ratchet Cheek Block
Regular price £79.46Sale price £79.46 Regular priceUnit price / per£90.81Sale -
Harken 57mm Carbo Single Block with Swivel/150 Cam-Matic
Regular price £154.31Sale price £154.31 Regular priceUnit price / per£176.35Sale -
Harken 57mm Carbo Single Block with Swivel/150 Cam-Matic and Becket
Regular price £164.20Sale price £164.20 Regular priceUnit price / per£187.66Sale -
Harken 57mm Carbo Triple Block with Swivel Head/150 Cam-Matic
Regular price £247.28Sale price £247.28 Regular priceUnit price / per£282.61Sale -
Harken 57mm Carbo Fiddle Block /150 Cam-Matic and Becket
Regular price £174.76Sale price £174.76 Regular priceUnit price / per£199.72Sale -
Harken 57mm Carbo Ratchamatic Single Block with Swivel Head
In stock
Regular price £119.66Sale price £119.66 Regular priceUnit price / per£136.76Sale -
Harken 57mm Carbo Ratchamatic Single Block and Becket with Swivel Head
Regular price £129.44Sale price £129.44 Regular priceUnit price / per£147.93Sale -
Harken 57mm Carbo Ratchamatic Triple Block /150 Cam-Matic
Regular price £347.01Sale price £347.01 Regular priceUnit price / per£396.58Sale -
Harken 57mm Carbo Ratchamatic Triple Block /150 Cam-Matic and Becket
Regular price £356.73Sale price £356.73 Regular priceUnit price / per£407.69Sale -
Harken 57mm Carbo Quad Block with Swivel Head
Regular price £208.06Sale price £208.06 Regular priceUnit price / per£237.78Sale -
Harken 57mm Carbo Ratchamatic Triple Block /150 Cam-Matic/ 40mm Block/Becket
Regular price £413.71Sale price £413.71 Regular priceUnit price / per£472.81Sale -
Harken 57mm Carbo Ratchamatic Double Block
Regular price £320.23Sale price £320.23 Regular priceUnit price / per£365.98Sale -
Harken 40mm Carbo Single Block with Swivel Shackle
In stock
Regular price £37.33Sale price £37.33 Regular priceUnit price / per£42.66Sale
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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.