Lewmar 90MM Synchro Block Single

In stock

Our synchro blocks are engineered for speed, efficiency and superior handling. Each piece is aligned with the movement of the rope for a smooth transition of power from deck to sail and less wear on the rope.

Quick Facts:

  • Synchronized movement from rope to sail
  • Expert engineering using scientifically optimized block geometry
  • Free-spin bearing and self-aligning head
  • Smooth transfer of power from deck to sail
  • Less wear on rope
  • Maximum line size 9/16"
  • Safe working load 4400 lbs.
  • Sheave diameter 90 mm

Replacement Synchro Block

The Lewmar 90 mm black synchro block with is designed for mainsheet and vang systems. Our synchro blocks feature geometry, with sheave ratios and a free spin bearing for a performance that is like ball and roller bearing block used in sailboat racing.


Lewmar has designed this synchro block to be aligned with your boat's rigging systems. They are ideal for the high stack loads on mainsheet systems and boom vangs, halyards, halyard tuning systems and masthead blocks.

Trusted Brand

Lewmar, the world's premier leisure marine equipment supplier, designs, manufactures and distributes winches, hardware, hatches, port lights, glass and glazing, steering systems, bow thrusters, anchoring and windlass products. They are a proud member of the Lippert family, a leading global manufacturer and supplier of highly engineered products and solutions, dedicated to shaping, growing and bettering the RV, marine, automotive, commercial vehicle, and building products industries. Lippert's commitment to their customers is always moving forward, always making their experience better.

Lewmar 90MM Synchro Block Single Features

  • DURABILITY - Stainless steel strap for improved strength and proven life extention
  • HIGHLY ENGINEERED - built with stiff glass reinforced cheeks to prevent lines from wedging
  • INNOVATIVE DESIGN - Featuring a "tool-free" sliding swivel locking mechanism
  • EASY TO USE - Practical switch from swivelling to fixed shackle
  • TRUSTED BRAND - Unmatched quality, engineering excellence and high-performing boating products since 1946
More Information
SKU 2020209499
Brand Lewmar®
Quantity In Package 1
Country of Origin CHN
Unit of Measure EA
UPC 743683203862
Manufacturer Reference Number 29929001BK

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