Harken 57 mm Carbo Air Blocks

Harken 2138 57mm Carbo Ratchet Block with Swivel & Cam Cleat

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.

Harken 2151 57mm T2 Loop Soft-Attach Block

The T2 Loop block's On/Off loop system slides through the block head and over the anchor post for a secure connection. Soft attachment provides a fair lead and reduces friction.

Harken 2152 57mm T2 Soft-Attach Block

This large 2-1/4" diameter all-composite T2 is the first block with no metal shackles or rivets to corrode. It can accommodate rope up to 7/16" (11 mm) in diameter.

Harken 2135 57mm Ratchet Block with Swivel

A 57 mm Carbo ratchet can hold loaded lines and control their release. With a 10:1 holding power, it can hold 100 pounds of sheet load with 10 pounds of your effort.

Harken 2135.RED 57mm Red Carbo Ratchet Block with Swivel

What was the special edition Red Ratchet Block is available every day to accessorize your ride.

Harken 2137 57mm Carbo Ratchet Cheek Block

Harken 2600 57mm Carbo Block with Swivel

Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

Harken 2601 57mm Single Swivel Block & Becket

The integral becket allows for a 2:1 or 3:1 purchase. Low-friction Carbo Air blocks are lightweight, strong, reliable and affordable.

Harken 2602 57mm Double Carbo AirBlock & Swivel

Match with a 2603 Double with Becket for a 4:1 purchase.

Harken 2166 57mm Carbo Power3 Ratchet Block 1.5x Grip

The Power3 1.5xGrip ratchet has a titanium-coloured sheave with 60 facets and a 15:1 holding power for "breeze-on and puffs."

Harken 2603 57mm Double Block Swivel & Becket

Harken 2169 57mm Carbo Power3 Ratchet Block 2xGrip

The 2xGrip allows sailors twice the holding power of a standard 57mm 2135 Ratchet, offering a 20:1 holding power for those "big breeze" days.

Harken 2604 57mm Triple Carbo Block with Swivel

Pair it with a 2618 Triple with 150 Cam-Matic & Becket for a powerful 6:1 purchase system.

Harken 2605 57mm Triple Block with Swivel & Becket

Low-friction Carbo AirBlocks%uFFFD are lightweight, strong, reliable and affordable. Perfect for the small-diameter hard lines favored by racers.

Harken 2621 57mm Carbo Fiddle Block with Swivel

This is an excellent option for 3:1 and 4:1 tackles, and the Air block design eliminates unnecessary material to reduce weight. Match with a 2624 57mm Carbo Fiddle Becket Block with Carbo-Cam for a 4:1 purchase or a 2601 57mm Single & Becket for a 3:1 purchase.

Harken 2625 57mm Carbo Ratchamatic Swivel Block

Harken 2606 57mm Cheek Block

Harken 2622 57mm Fiddle Block Swivel & Becket

Add a 2621 Carbo 57mm Fiddle for a 4:1 purchase.

Harken 2625.RED 57mm Carbo Ratchamatic Red Sheave

Add a little colour to your Optimist with this Red Sheave main block.

Harken 2615 57mm Block Swivel & 150 Cam Cleat

Features a 3-way Cam lock. Lever up, and the block locks in front or side position. Cam lever down, and the block rotates freely.

Harken 2623 57mm Carbo AirBlock Fiddle with Cam Cleat

Ball bearings, sheave and side plates are UV stabilized with a black additive for maximum protection.

Harken 2626 57mm Carbo Ratchamatic Block with Becket

Adjustable to ratchet at a higher or lower load to match the sailor's strength and sailing style. Suggested for medium and light air.

Harken 2616 57mm Single Block with 150 Cam-Matic & Becket

60% Stronger and 30% lighter than Harken classic blocks.

Harken 2624 57mm Carbo Fiddle Becket Block with 150 Cam-Matic

Add the 2621 Carbo Fiddle block for a 4:1 system.

Harken 2628 57mm Single Carbo Ratchamatic Block with Cam-Matic

Harken 2617 57mm Carbo Triple Swivel AirBlock with 150 Cam

Run with a 2603 Double with a Becket for a 5:1 purchase.

Harken 2618 57mm Triple Block with Becket & 150 Cam-Matic

Reeve the 2604 57mm Triple Carbo Block and the 2618 together and create a 6:1 Mainsheet.

Harken 2673 57mm Carbo Fiddle Ratchet Block with Swivel

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.

Harken 2674 57mm Fiddle Ratchet Block with Swivel & Becket

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.

Harken 2675 57mm Fiddle Ratchet with 150 Cam-Matic

Experience optimal holding power and controlled easing with the Harken 57mm Fiddle Ratchet with 150 Cam-Matic. It is ideal for sailors balancing power in loaded lines.

Harken 2676 57mm Fiddle Ratchet with 150 Cam & Becket

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.

Harken 7402 57mm Ratchet Stanchion Mount Block

Furling lead block assembly that fits 1" diameter stanchions.

Harken 2629 57mm Triple Carbo Ratchamatic Block with 150 Cam-Matic

By right-angle reeving the 2603 57mm Double with Becket, a 5:1 purchase is created. See the diagram below.

Harken 3215 57 mm High Load Aluminum Black Magic Air Block Swivel

Black Magic Air Blocks feature side plates cut from solid aluminum, hardcoat-anodized, and UV-stabilized. These Big Boat performance blocks are lightweight, free-running, powerful performers that are used for high-load frequently adjusted lines such as mainsheets, runners, halyards, and spinnaker systems.