LEWMAR 29925021BK Synchro Single Halyard Block Sailing 743683203879 Pulley 50MM

( Brand: Lewmar ), ( Model: SYNCHRO ), ( UPC: 743683203879 ), ( Manufacturer Part Number: 29925021BK ), ( Type: Pulley Block ), ( Size: 50mm ), ( Color: Black ), ( Warranty: 3 Year ), ( Country Of Manufacture: United Kingdom ), ( Item Weight: 0.2 Lb )

Review LEWMAR Synchro Single Halyard Block Sailing Pulley 50mm fits MARINE

The Lewmar 29925021BK Synchro Marine Single Halyard Block is a high-performance sailing pulley designed for use in marine applications. Measuring 50mm in size, this block is suitable for handling ropes or halyards with a diameter up to 11mm.

This single halyard block features Lewmar's patented Synchro system, which offers a number of advantages over traditional blocks. Synchro blocks have a self-aligning design that ensures the sheaves (grooves) remain perfectly aligned with the rope, even under heavy load or when the block is subjected to extreme angles. This results in reduced friction, smoother rope movement, and longer rope life.

The Lewmar 29925021BK is constructed from marine-grade materials, including a rust-resistant bronze alloy sheave and a durable, fiberglass-reinforced nylon body. The bronze sheave is self-lubricating, requiring little to no maintenance, while the nylon body is lightweight and resistant to the harsh marine environment.

The block comes with a removable, adjustable fairlead that can be easily set to the desired angle to help guide the rope through the block and reduce wear. The fairlead is also fitted with a soft-touch grip, providing a comfortable and secure grip for the sailor.

The Lewmar 29925021BK Single Halyard Block is designed to be easy to install and use. It comes with all necessary hardware, including stainless steel mounting screws and a brass threaded spigot for attaching the block to the boat. The block can be mounted in a variety of orientations, allowing it to be used in a range of sailing applications.

Overall, the Lewmar 29925021BK Synchro Marine Single Halyard Block is an excellent choice for sailors looking for a high-performance, low-maintenance pulley block for their marine applications. Its self-aligning Synchro system reduces friction and wear, while its marine-grade materials ensure long-lasting durability and performance.

A Detailed Analysis of the Lewmar 29925021BK Synchro Marine Single Halyard Block Sailing Pulley 50mm

The Lewmar 29925021BK Synchro Marine Single Halyard Block Sailing Pulley 50mm is a popular sailing accessory designed to make hoisting sails easier and more efficient. In this analysis, we will discuss the key features, benefits, and potential drawbacks of this product.

1. Compact and lightweight design

2. Self-gibriding sheaves for smooth sail handling

3. Color-coded sheaves for easy identification

4. High load capacity (up to 1100 lbs)

5. Durable construction with stainless steel components

1. Smooth and Efficient Sail Handling: The self-gibriding sheaves in the Lewmar 29925021BK pulley system reduce friction, allowing for smoother and more efficient sail handling.

2. Durability: Constructed with high-quality stainless steel components, this pulley system is built to withstand the harsh marine environment.

3. Versatility: Suitable for a wide range of sailboats and applications, the Lewmar 29925021BK pulley system offers excellent value for money.

1. Potential for Sheave Wear: Depending on the specific sailing conditions and usage, the sheaves might wear down over time, requiring occasional maintenance or replacement.

2. Not Suitable for Larger Sails: Due to its compact size and single halyard design, this pulley system may not be suitable for larger sails or heavy-duty applications.

The Lewmar 29925021BK Synchro Marine Single Halyard Block Sailing Pulley 50mm offers a range of benefits for sailors, including smooth sail handling, durability, and versatility. However, it does have some potential drawbacks, such as the need for occasional maintenance and limited suitability for larger sails.

If you are in the market for a reliable and efficient sailing pulley system for smaller sails, the Lewmar 29925021BK Synchro Marine Single Halyard Block Sailing Pulley 50mm is an excellent choice. However, if you require a more heavy-duty solution or larger pulley size, you may want to consider alternative options. Always ensure that the specific product meets your sailing needs and requirements before making a purchase.

part # 29925021bk prices

• $19.20-$36.20

specifications scowware:

• for models: Marine
• brand: Lewmar
• model#: SYNCHRO
• upc: 743683203879
• manufacturer part number: 29925021BK
• type: Pulley Block
• size: 50mm
• color: Black
• warranty: 3 Year
• country of manufacture: United Kingdom
• item weight: 0.2 Lb

seller scowware:

• rating: 100.0%
• # reviews: 41316

offer scowware:

• options: Ship-to-home
• started: November 11, 2025
• quantity: 5
• sold: 0
• availability: In Stock

general scowware:

• Parts Accessories > Boat Parts > Deck Cabin Hardware
• condition: New

returns scowware:

• policy: Returns Accepted
• time: 60 Days
• paid by: Seller

shipping scowware:

• cost: $0.00
• service: Economy, Expedited
• transit: 3-7 Days
• type: Fixed
• class: Economy, Expedited

payments scowware:

• other
• credit card: Diners-club
• wallet: Paypal

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