SKU: 82022214780

Single line reef, upgrade kit for 2 SLR reef. Complete kit. For Seldén B171 boom section (2008 -)

Sale price$347.22 Regular price$385.80
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

Single line reef, upgrade kit for 2 SLR reef. Complete kit. For Seldén B171 boom section (2008 -)Upgrade from slab reef to the convenience of Single Line Reefing. This kit is for B171 booms made 2008 and later. Check the article number of your boom end (aft part). If it is 500 041 this is the right kit for your boom. Instant reefing with Single Line Reef Single Line Reef is made practical and reliable by Seldn. All you do is ease off the halyard to premarked reefing points and then haul in on the reefing line. The luff and the leech are reefed at

Upgrade from slab reef to the convenience of Single Line Reefing. This kit is for B171 booms made 2008 and later. Check the article number of your boom end (aft part). If it is 500-041 this is the right kit for your boom. 

Instant reefing with Single Line Reef

Single Line Reef is made practical and reliable by Seldén. All you do is ease off the halyard to premarked reefing points and then haul in on the reefing line. The luff and the leech are reefed at the same time. A system of guided blocks inside the boom ensures that the lines do not tangle. The system has a 2:1 gear ratio for effortless reefing, without having to leave the cockpit.

The kit contains:

  • ø10 mm white/blue 32/3 Polyester line for reef 1. 6+ 25 m
  • ø10 mm white/red 32/3 Polyester line for reef 2. 6 + 38 m
  • 2 composite Single Line sliders that run in tracks inside the boom.
  • 2 reef shackles
  • 6 composite sheaves for your outboard- and inboard boom ends.
  • 2 ø10 mm x 39 mm shafts
  • Instructions
     

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 82022214780

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Keith
Whiting, US
★★★★★ 5
Great socks
Number of Items: 6, Color: Black (6-pairs), Size: Medium
I love these socks
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Reviewed in the United States on May 18, 2026
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ok
Alexandria, US
★★★★★ 5
Good socks
Number of Items: 6, Color: White (6-pairs), Size: X-Large
I have size 13 feet and these are great maybe they’ll stretch and be a bit big but I m fine with that
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Reviewed in the United States on April 30, 2026
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Wendy H.
Waukegan, US
★★★★★ 5
Well made socks
Number of Items: 6, Color: Black (6-pairs), Size: X-Large
Made well. Bought for my Son. He only likes Under Armour brand of socks. Only socks he buys.
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Reviewed in the United States on April 21, 2026
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September Hall
Battle Creek, US
★★★★★ 5
Great no show socks
Size: Small, Color: (725) Oxford Brown / Oxford Brown / Black
Very comfortable and perfect fit for my small feet. I love the full coverage sock feel with a totally no show sock.
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Reviewed in the United States on May 29, 2026
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ABK
Cuba, US
★★★★★ 5
Great no shows for people with larger feet
Size: Large, Color: (001) Black / Black / Castlerock
Some of my favorite socks!! Great quality, fit, and material. I love that they don't slip down in my shoes, especially considering I have larger feet. I also love that Under Armour offers larger sizes in their socks considering everyone in our household has much larger feet than others.
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Reviewed in the United States on May 3, 2026

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