Lewmar - Synchro Block Fiddle 72mm
 Lewmar - Synchro Block Fiddle 72mmLewmar - Synchro Block Fiddle 72mm 

Lewmar - Synchro Block Fiddle 72mm


Manufacturer #:  29927231BK

£67.99    (Inc. UK VAT @ 20%)(£56.66 Exc. VAT)

Lewmar Synchro blocks are engineered for speed, efficiency and superior handling. Using a combination of scientifically optimised block geometry, a free-spin bearing and self-aligning head to reduce friction and increase efficiency by up to 40% over budget blocks on mainsheet systems.

Each component is perfectly synchronised with the movement of the rope, providing you with an easier, smoother transfer of power from deck to sail and less wear on your rope.

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Product Information


  • Stainless steel strap for improved strength and longer service life
  • Stiff glass fibre reinforced cheeks to prevent lines from wedging
  • Innovative design with "tool-free" sliding swivel locking mechanism

Typical uses

  • Halyard tuning
  • Mainsheet traveller systems
  • Mast foot blocks
  • Mast head blocks
  • Boom vang

Lewmar Synchro Block Specifications

Sheave Working load limit Optimum Line Ø Maximum Line Ø Shackle Post Ø Fits Max Pin Ø
50mmØ 450kg 6mm 10mm 7.9mm 4mm
60mmØ 800kg 8mm 10mm 9.4mm 5mm
72mmØ 1,100kg 10mm 12mm 11.9mm 6mm
90mmØ 2,000kg 12mm 14mm 16.5mm 9.8mm

  A   - Easy to use shackle post lock

  B   - Shackle post - Fits travellers

  C   - Lock mechanism enables 30° float

  D   - Larger sheave diameter - Minimises rope friction

  E   - High density free-spring bearing - reduces axle diameter for superior efficiency

Lewmar Block Selection Guide

       +44 1243 375774      sales@oceanchandlery.com

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