Mammut 8.7 Alpine Sender Dry Rope
It is an undeniable fact that more is just better. More vegetables, mo' money*, more fiber, etc… With the “more is better” attitude in mind, the folks at Mammut designed a ridiculously versatile climbing rope in the Bluesign certified 8.7mm Alpine Sender Dry Rope. This triple-certified rope can act as a single, double, or twin rope providing unmatched all-season capability for wherever your next pursuit in the mountains takes you. The Dry finish keeps water absorption below 1.5% as per its UIAA water absorption test while adding increased resistance to abrasion. Because premium is better than not premium, Mammut uses only premium yarns in the construction of their ropes lending themselves to exceptionally smooth handling while minimizing unnecessary bulk. For ice climbing or light 'n' fast summer missions the Sender Dry Rope has what it takes to bring you to new heights.
- Triple certified for use as a single, half, or double rope.
- Dry rope property enhances durability and minimizes water absorption.
- Sender construction has a smooth sheath and is incredibly lightweight.
- Comes ready to climb out of the package, no need to uncoil.
- Achieves < 1.5% in UIAA water absorption tests.
| Rating | Falls | Impact Force |
| Single | 5 | 8.5kN |
| Half | >18 | 6.3kN |
| Twin | >20 | 9.5kN |
*Unless you're Biggie Smalls.
| Specifications | |
| Grams per Meter | 51g/m |
|
Weight |
2854g [50m] 3396g [60m] 3875g [70m] |
| Length | 50m, 60m, 70m |
|
|
8.7mm |
| Strength | Single: 8.5kN Half: 6.3kN Twin: 9.5kN |
| Specs Verified | Yes |
| Design | |
| Rope Style | Single, half, twin |
| UIAA Fall Rating | Single: 5 Half: 18+ Twin: 20+ |
| Skimo Co Says | |
| Usage | Ultralight all around alpinism |
| Notes | Bluesign certified |
| Bottom Line | Lightweight and triple cerified, with state of the art dry treatment |
| Compare to other Ropes | |
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Questions & Reviews
10/11/2023
I noticed that the weights listed are not just the grams per meter multiplied by the length. Did you actually weigh samples of the 50,60,70m version to determine their actual weight?
10/14/2023
Hi Ellen, yes we measured the stock we have here in the store for these weights.
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9/24/2022
Kevin Miller
(used product a few times)
The rope is awesome, super light and perfect for back country climbing adventures. My only qualm is that it’s advertised as having a center mark on every website including this one and mine DOES NOT have a center mark which is a bummer and I would not have bought it had I known.
9/24/2022
CORRECTION: there IS a center mark, however it is very hard to find. I used the rope all day and couldn’t find it but when I got home I laid it out in my
living room and did find the mark, just know that it is barely noticeable which is definitely a downside to the product. Attached is a photo of the center mark…
living room and did find the mark, just know that it is barely noticeable which is definitely a downside to the product. Attached is a photo of the center mark…
9/24/2022
Hey Kevin, thanks for the feedback, it's information like this that helps inform what gear we carry in the future and what attributes to prioritize! We've removed the "middle mark" feature from this product description.
I can certainly see how it might be a bit anxiety-producing to be looking for a faint middle mark during a series of rappels, especially in low-light conditions.
I can certainly see how it might be a bit anxiety-producing to be looking for a faint middle mark during a series of rappels, especially in low-light conditions.
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I'll admit this is based on my first one of these, and I'm on to the 2nd. It's been a great daily tool for trad rock and ice, and I think it's the perfect balance of weight, handling and overall Mammut excellence. They have always made my favorite ropes, and while I respect other makers, these are IMHO the best. I would not hangdog or travel glaciers with it, but for what I do, it's a fantastic cord. I have mostly used a 60 m for rock and 70 for ice, but your results may vary. It also lasts longer than you'd imagine given the diameter. Only caveat (as with all ropes) is check the middle mark. They are not always dead center, and they wear off relatively quickly. The only good thing about the latter is if that happens, you can re-mark it at the true center. Of the dozen or so Mammut ropes I've owned over the years this is my favorite.
6/4/2025
why wouldn't you travel glaciers with it?
6/4/2025
I do not have the volume of experience on glaciers which will make this an expert opinion, so make of it what you will. I have lighter, more static ropes for glacier travel (I've got 2x30m Beal Randos, or the older equivalent). They are dynamic enough to lead on, but not so much so that extraction is a nightmare. My friends who are guides tend to look to the Petzl Rad, and prefer a 60m for 2 people as a dedicated glacier travel tool (more spare length for rescue, where I'd be fine with the two 30s for 3 people, or 2 in a smaller range: apparently in places like AK you want more cord not less). Note with the Rad you need to ensure your tools (belay/rappel devices, ascenders) work properly with this very skinny, very static cord, and it's not a lead line (so the leader really must not fall.) Apparently the IFMGA are reconsidering this specific tool, but many guides are sticking with it, so research it carefully before you drop the major investment they represent.
If I were somewhere the primary objective was alpine rock or ice, and there was some glacier travel, the Mammut 8.7 would be fine. I have now had two 60m and two 70m, and they wear faster than the 9.5 duodess, which is a rock solid beast (funny when 10.5 mm used to be a skinny rope, but the times change). I like the 70 meter length for rock and ice cragging, or alpine single rope use, but like the 60m whenever I don't need the extra length and can save some weight (easier terrain, climbing with less experienced folk you want to stay close to). I do like these skinny lines, but they do have more elongation and 'bounce'. Nice when you want lower impact force, not so great when stuck inside a glacier.
If I were somewhere the primary objective was alpine rock or ice, and there was some glacier travel, the Mammut 8.7 would be fine. I have now had two 60m and two 70m, and they wear faster than the 9.5 duodess, which is a rock solid beast (funny when 10.5 mm used to be a skinny rope, but the times change). I like the 70 meter length for rock and ice cragging, or alpine single rope use, but like the 60m whenever I don't need the extra length and can save some weight (easier terrain, climbing with less experienced folk you want to stay close to). I do like these skinny lines, but they do have more elongation and 'bounce'. Nice when you want lower impact force, not so great when stuck inside a glacier.
6/10/2025
Thanks a lot for responding, this is helpful.
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