Blocks - Stand-Up

Harken 45mm Aluminium Element Stand-Up Block Stand-up blocks are an addition to our Element line. Use them for sheeting and halyard systems, running backstays, controls and other applications where you don’t want the block to hit the deck. Element...

Harken 60mm Aluminium Element Stand-Up Block Stand-up blocks are an addition to our Element line. Use them for sheeting and halyard systems, running backstays, controls and other applications where you don’t want the block to hit the deck. Element...

Harken 29mm Stand-up Block 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...

Harken 40mm Stand-up Block 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...

Harken 75mm Aluminium Stand-up Block Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action. Sideplates and sheaves...

Harken 27mm End Control - Double Sheave, Cam Cleat, Set of 2 Stand-up toggles hold blocks upright on travelers. Stand-up toggles with control tangs allow attachment of control blocks. Part Number Height Max. Working Load Mainsheet...

Harken 27mm End Control - Double Sheave, Cam Cleat, Set of 2 Stand-up toggles hold blocks upright on travelers. Stand-up toggles with control tangs allow attachment of control blocks Part Number Height Max. Working Load Mainsheet...

Harken Stand-Up Toggle - 6 or 8 mm Pin Stand-up toggles hold blocks upright on travelers. Part Number Mainsheet Block Pin Dia. Max. Working Load Height HKN-1567 6,8 mm 1134kg 59mm

Harken 32mm Stand-Up Toggle Stand-up toggles hold blocks upright on travelers. Includes a replacement headpost for 1971 75 mm Black Magic® Air® blocks and 1993, 3007, and 3008 100 mm Black Magic Air blocks. Part...

A balanced design approach incorporating functionality, performance and style makes the Series 100 Core Blocks™ the right choice for performance cruising or racing applications. A full contact bearing provides excellent performance across the full...

Features: Ultra Lightweight Low friction 2-stage Orbital ball bearing system Highest working load in its class Low profile and compact High performance cleating Easily fitted and securely retained Dyneema Link head Applications: Mainsheet...

Features: Ultra Lightweight Low friction 2-stage Orbital ball bearing system Highest working load in its class Low profile and compact High performance cleating Swivel shackle head for unlimited block rotation -grade 316 stainless steel...

Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range. Features: Low friction 2-stage ball bearing system...

Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range. Captive Lock™ universal head can be fixed in either...

Low profile stand-up kit allows 0° or 90° alignment Stand-up kits feature a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It's a neat,...

Low profile stand-up kit allows 0° or 90° alignment The RF2455 stand-up kit features a clatter-free rubber boot. You can attach the  Dyneema® link so that the block is aligned with the stand-up base or across it. It’s a...

Ronstan Stand-Up Boot - Suits Series 40 Ball Bearing & Ratchet Orbit Blocks Part Number M.W.L. B. L. Weight RON-RF2454B - - 6g

Ronstan Stand-Up Boot - Suits Series 55 Ball Bearing & Ratchet Orbit Blocks Part Number M.W.L. B. L. Weight RON-RF2455B - - 11g

Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads...

Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads...

Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads...

Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads...

 The highest strength-to-weight ratio  Minimal friction loss, especially when working at high loads  Totally reliable and trouble free performance  Simplicity of design and construction to facilitate maintenance and...

 The highest strength-to-weight ratio  Minimal friction loss, especially when working at high loads  Totally reliable and trouble free performance  Simplicity of design and construction to facilitate maintenance and...

Ronstan's All Purpose (AP) blocks are a great all-round solution. With Acetal polymer sheaves this stand-up block with a swivel head has many applications and is available in 2 sizes. Features: 316 Stainless Steel polished bearing races, load...

Springs support blocks on pad eyes, eye straps, bases, and traveller cars, and prevent blocks from hitting the deck. Note: DO NOT use Harken equipment for human suspension unless product is specifically certified and labelled for such use. SOLD IN...

Harken stainless steel springs support blocks on pad eyes, eye straps, bases, and traveller cars, and prevent blocks from hitting the deck. Note: DO NOT use Harken equipment for human suspension unless product is specifically certified and labelled...

Springs support blocks on padeyes, eyestraps, bases, and traveller cars, and prevent blocks from hitting the deck. Note: DO NOT use Harken equipment for human suspension unless product is specifically certified and labelled for such use. SOLD IN...

Stand-up bases allow a wide variety of blocks to beheld upright, swivel freely, or pivot so lines have a fair lead under load. Use the 1634 stand-up base with Midrange blocksand 57 mm or 75 mm Cruising ESP blocks. Block headpost fits into socket without...

Made of durable, flexible PVC, stand-up boots hold blocks up without snagging lines. The 370 fits 75 mm Carbo blocks. Note: DO NOT use Harken equipment for human suspension unless product is specifically certified and labelled for such use...

Stand-up bases allow a wide variety of blocks to be held upright, swivel freely, or pivot so lines have a fairlead under load. The ball-and-socket design lets blocks articulate up to 45 degrees and swivel freely. The 460 and 461 bases (high-load...

Stand-up bases allow a wide variety of blocks to be held upright, swivel freely, or pivot so lines have a fair lead under load. The ball-and-socket design lets blocks articulate up to 45 degrees and swivel freely. The 460 and 461 bases (high-load...

The DN Adaptor is a spring with a swivel mount that attaches the main sheet block to the tiller post. It uses a 071 spring to prevent the block from hitting the tiller post. The attachment point is a shackle and pin. The shackle is a 3/16" pin and the...

Stand-up bases allow a wide variety of blocks to be held upright, swivel freely, or pivot so lines have a fairlead under load. The ball-and-socket design lets blocks articulate up to 45 degrees and swivel freely. The 460 and 461 bases (high-load...

Stainless side plates are mirror-polished for durability and unmatched aesthetics. The ultralight composite bearing system (ULC) rides on a heat-treated stainless steel inner race to handle extremely high loads. Note: DO NOT use Harken equipment...

Stainless sideplates are mirror-polished for durability and unmatched esthetics. The ultralight composite bearing system (ULC) rides on a heat-treated stainless steel inner race to handle extremely high loads.Sheave ∅ (mm)175mmWeight (kg)8...

Stainless sideplates are mirror-polished for durability and unmatched esthetics. The ultralight composite bearing system (ULC) rides on a heat-treated stainless steel inner race to handle extremely high loads.Sheave ∅ (mm)150mmWeight (kg)6...

Stainless sideplates are mirror-polished for durability and unmatched esthetics. The ultralight composite bearing system (ULC) rides on a heat-treated stainless steel inner race to handle extremely high loads.Sheave ∅ (mm)150mmWeight (kg)6...

Stainless sideplates are mirror-polished for durability and unmatched esthetics. The ultralight composite bearing system (ULC) rides on a heat-treated stainless steel inner race to handle extremely high loads.Sheave ∅ (mm)125mmWeight (kg)3...

Stainless side plates are mirror-polished for durability and unmatched aesthetics. The ultralight composite bearing system (ULC) rides on a heat-treated stainless steel inner race to handle extremely high loads. Note: DO NOT use Harken equipment...

Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Note: DO NOT use Harken equipment for human suspension unless product is specifically...

The 16mm is Harken's smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) maximum working load. The 442...