SKU: 29256207861

Ronstan Series 40 All Purpose Block - Single - Universal Head [RF41100]

Sale price$22.91 Regular price$25.45
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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

Ronstan Series 40 All Purpose Block - Single - Universal Head [RF41100]Series 40 All Purpose Block Single Universal Head All purpose (AP) blocks are a great all around solution. Self lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Captive Lock universal head can be fixed in either of

Series 40 All Purpose Block - Single - Universal Head

All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.

Features:

  • Exceptionally high working loads
  • Low maintenance, long service life
  • Self-lubricating sheave
  • Captive Lock™ universal head
  • Slotted pin shackle eliminates fouled lines


Applications:
  • Mainsheet
  • Halyard
  • Vang
  • Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')


Materials:
  • U.V. stabilized Acetal sheaves
  • Impact and U.V. resistant, fiber reinforced Nylon cheeks
  • Grade 316 stainless steel bearing race
  • Grade 316 stainless steel load strap and head fitting


Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
Pin Ø: 5mm(3/16")
M.W.L.: 400kg(880lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 71g(2.5oz)
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: 29256207861

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Lee C.
Boise, US
★★★★★ 5
The Best!!
As a proud owner of a BMW 328i Wagon, I'm always on the lookout for the best products to keep my car running smoothly and efficiently. After doing some research, I decided to give Liqui Moly Special Tec B FE SAE 5W-30 Motor Oil a try, and I'm extremely impressed with the results. This motor oil is specifically formulated with synthesis technology to meet the high-performance demands of modern engines, making it an excellent choice for my BMW. The 5W-30 viscosity rating ensures optimal lubrication and protection, even in extreme driving conditions and temperature fluctuations. I've noticed a significant improvement in engine performance since switching to this motor oil—the engine runs quieter, smoother, and more efficiently, with better fuel economy and reduced emissions. Plus, I appreciate the long-lasting protection it provides, helping to extend the life of my engine and reduce the need for frequent oil changes. The 5-liter size is convenient and cost-effective, providing plenty of oil for multiple oil changes. Overall, I highly recommend Liqui Moly Special Tec B FE SAE 5W-30 Motor Oil to BMW owners looking for a premium motor oil that delivers exceptional performance and protection.
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Reviewed in the United States on May 16, 2024
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Helen
Lowell, US
★★★★★ 5
Top-Quality Oil — Engine Runs Smoother
Liqui Moly is the best. My engine runs quieter and smoother after using this oil. Great protection, high quality, and totally worth it. If you care about your car, this is the brand to trust
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Reviewed in the United States on December 1, 2025
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NoName4U
Boise, US
★★★★★ 5
Best Oil Brand Available
Best automotive oil on the market. Only brand I will use in my cars. Used specifically for a 2018 BMW X5.
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Reviewed in the United States on February 27, 2026
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Bob
Grantham, US
★★★★★ 5
Good product
works well for bmw.
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Reviewed in the United States on January 21, 2026
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SChain
Alexandria, US
★★★★★ 5
Great oil and makes my engine run quieter
I noticed the engine running much quieter using this oil. The pour mouth is pretty unique for this brand, you can just open the interior cap, pull up the accordion neck and pour into the engine which provides better control over traditional wide mouth, thus less messy. This oil rarely goes on sale and is typically 1.5x to 2x more expensive than the more common US brands.
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Reviewed in the United States on August 28, 2025

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