SKU: 57566009927

Karver KJC20 Carbon Jammer - Rope Ø 8-14mm

Sale price$8109.00 Regular price$9010.00
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

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Description

Karver KJC20 Carbon Jammer - Rope Ø 8-14mmThe KJC20 is the carbon version of the legendary KJ 3 jaw high load ascender. Even though the aluminum version remains available, the KJC becomes the new standard. The secret of KJ blockers lies in 2 simple technical elements : a conical shape where the more you pull the more it gets stuck and the use of 3 jaws to distribute the load over 360 so as to never flatten or damage the ropes. Our blocker is no exception to the chore of cleaning but we have

The KJC20 is the carbon version of the legendary KJ 3-jaw high load ascender. Even though the aluminum version remains available, the KJC becomes the new standard. 

The secret of KJ blockers lies in 2 simple technical elements : a conical shape where the more you pull the more it gets stuck and the use of 3 jaws to distribute the load over 360 ° so as to never flatten or damage the ropes. Our blocker is no exception to the chore of cleaning but we have thought of you : The ascender is in 2 parts which makes it possible to extract the ascender very quickly without having to disassemble its glued – screwed support. The result : an innovative and efficient ascender that does not let go and that does not damage the strings. 

Rope Ø 8-14mm

– Innovation : 3 jaws surround the rope (instead of 2 on all other blockers on the market). The load is distributed on the rope and the sheath wears less.
– Innovation : The conical shape accentuates the hold of the rope. The more you pull, the more resistance there is.
– Design : The cone containing the locking mechanism can and installed without its foot in a reinforced “sock” installed in any location : deck, boom, mast, bowsprit,…
– Convenient : The KJ can be ordered with or without its stand
– Practical : The opening and closing (in the axis of the rope) can be controlled remotely by installing extensions. The ascender is installed as close as possible and limits the undesirable effects of the elasticity of the rope. It is very often found as a blocker on headsail tack.
– Ergonomics : The new KJC is now equipped with a jaw closure button on the upper part of the ascender.
– Performance : The rope does not slip. Very little recoil when blocking.
– Convenient : the ascender can be removed from the foot without tools. Maintenance and cleaning are easy. If necessary, the cone can be replaced very quickly.
– Performance : Extremely compact and light.
– Design : Online ordering allows the blocker to be installed in very small and even hidden locations.
– Performance : In the open position, the jaws open wide and offer very little resistance to the string
– Performance : The reduced wear of the sheath greatly limits string replacements. Investment in technical ropes is relevant
– Ergonomics : No constraint on the operations height (unlike a jammer that opens from the top : Each KJ can accommodate a wide range of diameters without affecting performance
– The KJ is also available without its foot (KJ CONE) in order to be installed in a laminated liner
– Aesthetics : KJ Carbon is also available with a thin layer of natural wood. It will thus fit perfectly into a teak deck.

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: 57566009927

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Adrian
New York, US
★★★★★ 5
A Must-Have for Sensitive Skin
Size: 5 Fl Oz (Pack of 1)
recently tried La Roche-Posay sunscreen and I’m really impressed! 🌞 The texture is lightweight, non-greasy, and absorbs quickly without leaving a white cast, which is a big plus for daily wear. It feels gentle on my skin and doesn’t clog pores, making it perfect for sensitive or acne-prone skin. I also love that it provides strong, broad-spectrum protection while still feeling breathable. Overall, it’s become my go-to sunscreen—I actually enjoy applying it every morning because it feels more like skincare than sunscreen. Definitely worth it! I would be honored if you would consider me to receive a PR package. I’d love the opportunity to try more of your products and create authentic content that highlights the benefits of La Roche-Posay skincare. Thank you so much for your time and consideration! Warm regards, Andrea Mohanlall
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Reviewed in the United States on September 4, 2025
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Bywater Mike
Lake Worth, US
★★★★★ 5
Goes on smooth with no white cast.
Size: 3 Fl Oz (Pack of 1)
This is excellent and disappears on the skin. Smooth as silk.
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Reviewed in the United States on May 10, 2026
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Carmen Suárez
Carnegie, US
★★★★★ 4
It feels very good on the skin.
Size: 3 Fl Oz (Pack of 1)
I’ve been using this sunscreen for about a week now, and honestly, I’ve liked it even more than I expected. The skin on my face feels much softer and healthier, and one thing I’ve definitely noticed is that my dark circles are gradually looking a bit lighter and less tired. I love it because it doesn’t feel heavy, absorbs quickly, and doesn’t leave a greasy residue. I also like that it works well under makeup or just on its own for everyday use. For now, I’m giving it 4 stars because I haven’t been using it for very long yet and want to see more results, but so far, I definitely feel a difference in my skin. If I continue to see more positive changes, I’ll come back to update my review.
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Reviewed in the United States on May 30, 2026
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Diane P
Carnegie, US
★★★★★ 5
Blends nicely, is not greasy.
Size: 5 Fl Oz (Pack of 1)
Light, blends nicely into skin. Does a good job of blocking the sun. I will buy it again before the summer is over.
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Reviewed in the United States on May 21, 2026
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Aj
Omaha, US
★★★★★ 5
Feels like nothing!
Size: 3 Fl Oz (Pack of 1)
Fantastic! I never write reviews but this is incredible. Just as advertised it dries quickly, doesn’t feel oily and doesn’t leave marks. And the coverage is no joke in this AZ sun! Held up during Memorial Day weekend at the pool all day. Excellent all around!
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Reviewed in the United States on May 25, 2026

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