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Description
50mm Synchro Block - Single
Lewmar's Synchro Blocks are engineered for speed, efficiency, and superior handling. Using a combination of scientifically optimized block geometry, a Free-Spin bearing, and a self-aligning head to reduce friction and increase efficiency by up to 40%, over budget blocks on mainsheet systems.
Each component is perfectly synchronized 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.
Features:
- Stainless steel strap for improved strength and longer service life
- Stiff glass fiber reinforced cheeks to prevent lines from wedging
- Innovative design with “tool-free” sliding swivel locking mechanism
Technical Specifications:
- Working Load Limit - 990lb
- Weight - 2.36oz
- Maximum Line Size - .39" (10mm)
*Sold as an Individual
Accessories
No accessories listed for this product.
Specifications
| SKU | 29925001BK |
| UPC | 743683203749 |
| Brand | Lewmar |
| Category | Sailing |
| Country of Origin | gb |
| Weight | 0.4 |
| Dimensions | 4 x 2 x 1 |
| Status | Active |
| Last Synced | 9/1/2026, 2:08:01 AM |
Compliance & Shipping
Returnable
Product Literature
No literature or manuals available for this product.
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Frequently Bought Together
Compare Key Features
| Feature |  Lewmar 50mm Synchro Block - Single CURRENT |  Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket |  Harken 57mm Carbo Air Block w/Swivel |  Barton Marine Ratchet Block - 55mm |  Harken 16mm Block |
|---|---|---|---|---|---|
| Price | $33.96 | $57.81 | $53.93 | $111.66 | $17.21 |
| Brand | Lewmar | Ronstan | Harken | Barton Marine | Harken |
| Condition | New | New | New | New | New |
| Availability | In Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 0.4 | 0.19 | 0.3 | 0.3 | 0.1 |
| Dimensions | 4 x 2 x 1 | 4 x 2 x 2 | 6 x 3 x 1 | 6 x 3 x 2 | 3 x 2 x 1 |
| SKU | 29925001BK | RF35312 | 2600 | 90500 | 404 |
| Country | gb | INDONESIA | UNITED STATES | — | UNITED STATES |
| View Item | View Item | View Item | View Item | View Item |
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$33.96