Best in 7 days
![Lewmar 90mm Synchro Block - Single [29929001BK]](https://cdn.shopify.com/s/files/1/0405/8454/4408/files/94310XL.jpg?v=1770164780)
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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Description
Lewmar 90mm Synchro Block - Single [29929001BK]90mm 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
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.1 ★★★★★
Based on 1407 reviews
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Product Reviews
★★★★★ 5
Perfect!
Works perfectly for the one we got!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
★★★★★ 5
Perfect fit
Perfect fit for the toothbrush. We have a different brand of toothbrush (also from Amazon) but it has been discontinued. But these replacements fit perfectly.
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Reviewed in the United States on January 3, 2026
★★★★★ 5
Good value
Way cheaper than other similar head
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Reviewed in the United States on April 16, 2026
★★★★★ 4
For kids
That's so cheap and always
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Kid wants to use!
Pretty color, makes my kid want to brush her teeth. Win and 5 star in my book!!!
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Reviewed in the United States on March 9, 2026
