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Lewmar 29929001BK 90mm Synchro Single Block with Free-Spin Bearing

Manufacturer

Lewmar

<h3>About Lewmar Marine</h3><p><strong>Lewmar</strong> is one of the most storied names in marine hardware, tracing its roots back to 1946 when Lewmar was founded by sailing aficionados Len Lewry and Leslie Marsh, originating from a passion for sailing and a need for superior gear. What began as a small operation producing Tufnol dinghy fittings has since grown into a global leader. Today, Lewmar is recognized as the world's leading manufacturer of winches, anchor windlasses, hatches, and marine deck hardware for sailing boats, yachts, and superyachts — with over 75 years of innovation behind every product.</p><p>Since 2019, Lewmar has been part of the Lippert Group, a global manufacturer of components for recreational vehicles and boats. This partnership has only deepened Lewmar's engineering capabilities while preserving the brand identity boaters have trusted for generations. Lewmar manufactures products primarily for sailboats, yachts, super-yachts, and mega-yachts, but also proudly serves the broader boating industry with OEM and aftermarket solutions for all types of boats.</p><h3>A Legacy of Innovation and Awards</h3><p>Lewmar hardware has equipped legendary vessels including Francis Chichester's Gipsy Moth IV during his solo circumnavigation in 1967, and has been chosen for America's Cup campaigns. That heritage of performance is more than marketing — it reflects decades of engineering discipline applied to every product line. Throughout its history, Lewmar has received several awards, including three Queen's Awards and two DAME Awards for outstanding product innovations.</p><p>Lewmar designs durable equipment for both recreational and commercial vessels, ensuring reliable performance in demanding marine environments. Whether you're a weekend angler, a bluewater cruiser, or a professional captain, there's a Lewmar product engineered for your needs.</p><h3>What Lewmar Makes</h3><p>Lewmar offers a full range of marine equipment: manual, electric, and hydraulic winches; anchor windlasses and capstans; anchoring systems; deck hardware and blocks; hatches; portlights; steering systems; and thrusters. That breadth of catalog means boaters can outfit an entire vessel from a single, trusted source. The complete Lewmar range is designed to suit any vessel, from the smallest recreational sailboat to the largest superyacht.</p><p>Among Lewmar's most popular product lines are their <a href="/7429-lewmar-shallow-water-anchor-systems-200939">Shallow Water Anchor Systems</a>, purpose-built for anglers and fishing enthusiasts who need quick, quiet boat positioning in skinny water. Complementing the anchoring ecosystem, Lewmar's <a href="/7429-lewmar-anchor-rodes-200097">Anchor Rodes</a> are engineered to work hand-in-hand with their windlasses for seamless deployment and retrieval. For helm control, Lewmar's <a href="/7429-lewmar-steering-wheel-1320">Steering Wheels</a> bring the same build quality and marine-grade craftsmanship to the cockpit.</p><h3>Why Boaters Trust Lewmar</h3><p>Many Lewmar products, such as hatches and winches, come with clear installation guides for DIY installation, but complex systems like thrusters or hydraulic steering may require professional installation for best results. This flexibility makes Lewmar products accessible to both the hands-on boat owner and the professional installer alike. Lewmar stands behind its products, offering support and warranties that provide peace of mind. For anyone serious about spending time on the water, Lewmar represents a combination of heritage, innovation, and proven reliability that is hard to match.</p>

Part Number

29929001BK
09/20/2036 1:51 AM
Sale Price

$128.97

2 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Lewmar 29929001BK 90mm Synchro Single Block is a high-performance sailing block engineered for speed, efficiency, and superior handling. Designed for sailors who demand reliable power transfer, this single block excels in mainsheet systems, vang systems, halyards, halyard tuning systems, and masthead block applications.

Lewmar's Synchro Block combines scientifically optimized block geometry with a revolutionary Free-Spin bearing and self-aligning head to reduce friction and increase efficiency by up to 40% over budget blocks on mainsheet systems. Every component is synchronized with the movement of the rope, ensuring a smoother, easier transfer of power from deck to sail while significantly reducing rope wear.

Key Features:

  • Free-Spin bearing and self-aligning head reduce friction for up to 40% greater efficiency over budget blocks
  • Stainless steel strap for improved strength and extended service life
  • Stiff glass fiber reinforced cheeks prevent lines from wedging
  • Innovative "tool-free" sliding swivel locking mechanism — easily switch between swiveling and fixed shackle configurations
  • Scientifically optimized block geometry for smooth, synchronized rope movement
  • Reduces rope wear for longer line life

Technical Specifications:

  • Sheave Size: 90mm
  • Safe Working Load (SWL): 4,400 lbs
  • Optimum Line Size: 1/2 in
  • Maximum Line Size: 9/16 in
  • Weight: 14.57 oz
  • Color: Black

The Lewmar Synchro Single Block is the ideal choice for cruisers and racers alike, delivering race-block performance at an accessible price point. Whether used on mainsheets, boom vangs, halyards, or masthead setups, this block is built to perform under heavy and static loads with consistent reliability.

Products specifications

Type

Single

Diameter

9/16 Inch or 14 mm

Mount Type

Swivel Shackle

Weight

0.90

Becket

No Becket

Direction

Any

Integral Cleat

No Integral Cleat

Ratchet

Non Ratcheting

Safe Working Load

4400 Pounds

Sheave Diameter

90 mm

Great pricing fast shipping, flawless transaction!

Great price

paid for 2 day delivery and took for days to receive after I was told could not ship to PO Box. That should tell you immediately when you type in ship to address on order form like all other business's do

Returning customer from almost 17 years ago! I built a b16a and I bought all of the internals from you guys. Couldn&amp;#039;t find my old account

Fast service

Goo

Great price

Online ordering was easy, the prices are good, and fast delivery. Over all it was a pleasure doing business with them.

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