• Grivel - G12  Crampon - Cramp-O-Matic
    Grivel - G12  Crampon - New-Classic
    Grivel - G12  Crampon - New-Matic
    Grivel - G12  Crampon - Detail
  • Grivel - G12  Crampon - Cramp-O-Matic
  • Grivel - G12  Crampon - New-Classic
  • Grivel - G12  Crampon - New-Matic
  • Grivel - G12  Crampon - Detail
Grivel - G12 CramponView Larger Image

Grivel G12 Crampon

25% Off
$131.21 $174.95

Item #GRV0050



Tech Specs

Boot Compatibility:
[cramp-o-matic] step-in, [new-classic] strap-on, [new-matic] hybrid
Front Points:
Number of Points:
Anti-balling plates:
yes, included
Claimed Weight:
(without balling plate) 1 lb 15.7 oz, (with balling plate) 2 lb 4.7 oz
Recommended Use:
ice/mixed climbing, mountaineering
Manufacturer Warranty:

From glacier strolls to grade 4 alpine ice, the Grivel G12 is ready.

Alpine climbers and mountaineers count on the versatile Grivel G12 Crampons to take on any terrain they encounter in the mountains. The G12's time-proven design is an excellent choice for everything but the steepest pitches of ice.

  • Horizontal front points on the G12 reduce sheer in less-than-solid ice and other types of alpine funk
  • Three available attachment systems let you pick the perfect 'poons for your boots
  • Anti-balling plates keep snow from sticking to the bottom
  • Tool-free length adjustment
  • Reviews
  • Q & A

All-around Alpine Workhorse

  • Familiarity: I've put it through the wringer

I've used many different brands of crampon and settled on the G12 "Cramp-o-Matic" as my all-around pair o' spikes. These crampons performed well on WI4+ sport laps in Colorado as well as load-carrying up steep frozen snow slopes in the Andes. These crampons are quite stiff and performed well on all footwear I put them on. While some folks prefer to have vertical front points, I find the horizontal spikes can be just as secure (with good footwork) on vertical ice and still perform just as well on less technical terrain. That being said, I would not recommend these crampons for mixed climbing or very overhanging ice lines.

The fit: These crampons were among the easiest to adjust that I have used. The toe bails fit snuggly to both my climbing boots and touring boots. The heels are very secure and I did not feel any wiggle even when navigating short rock sections in them. The adjustment system took a few tries to get right but now I can change the length quickly and easily from my touring boots (Scarpa Maestrale 27.5) to my climbing boots (La Sport Nepal's 44). I'm a huge fan of the front leash loop. No more fiddling around to run your ankle leash under your toe bail in less than ideal conditions (Warning, this metal part is quite sharp and put a hole in a pair of liner gloves but I guess that's part of the joy of alpine climbing).

Also, the bright yellow is a nice feature for trying to find your gear during alpine starts.

Gave as a gift

  • Familiarity: I gave it as a gift but have feedback to share

Gifted these to a friend and here's his review:
I purchased the G12's to fit some more flexible mountaineering boots that don't have the front tow bale. For flat-steepish terrain these are ideal. The anti-ball plates really help evacuate the snow out of the crampon. I trust all of their products. I can't afford to have a wardrobe malfunction, especially in a remote location.

Sharp AF

    I bought these as a gift for my boyfriend and here's what he had to say!

    "These crampons are the gold standard for a one-quiver crampon! I use the Cramp-O-Matics on my La Sportiva Nepal Evo’s and they work like a dream. They are extremely sharp right out of the box and only take a few min to adjust. My Nepals are size 43.5 and these have plenty of room to adjust larger or smaller. I’ve used them for steep snow and vertical ice and they are great for both. Would you rather have vertical mono points in the front for hard ice climbing? Sure.. but these work pretty darn well and keep in mind that there are countless classic ice routes were put up with wooden shafted ice axes and ice pitons! If you are looking for a general mountaineering crampon that will also work well enough for ice climbing, the G12’s are what you are looking for. As bonus info, these WILL fit on Scarpa NTN telemark boots. The toe piece requires some enthusiasm to seat but once locked into place, are remarkably solid. "

    Sharp AF

    Little problem with small boots

    • Familiarity: I've put it through the wringer

    I bought a G12 for Zamberlan 39 EU. The fastenings in the nose and back were wider than the boot. But the problem is solved, if you tighten the clamp tightly behind, it helps fix the crampon, and the shoe stops hanging to the right - to the left.

    So I am just starting with mountaineering. I don't have money for mountaineering boots yet and don't need them for a while from what I was told. Will the new classics be my best bet for normal winter boots? Will they work with most types of boots and even shoes if for some reason I wanted them for that?

    Yes, the new classics will the best choice for your needs as they should fit all boots. The new-matics require that the boots have heel welts to fit and the cramp-o-matics require both heel and toe welts, and though they are more secure than the new classics, they work with a smaller range of boots. Go with the new classics if you want to use them with virtually any boots.

    Unanswered Question

    I need a replacement strap for my G12 new-matic. What length strap do i need to buy? I've seen a couple different sizes.

    Prickly Pears

    • Familiarity: I've used it several times

    Fit the Scarpa Maestrale and sharp out of box. Haven't needed maintenance yet.

    Favorite all around crampon

    • Familiarity: I've used it once or twice and have initial impressions

    I like to use these as my main all-mountain crampon. So well built, you would think they were made in Italy. Oh wait.. they are. Bomber.

    Near perfect fit

    • Familiarity: I've used it once or twice and have initial impressions

    Got these to pair with La Sportiva Baruntse, 47.5/13.5, with the 190mm extension bars (at smallest adjustment with extension bar, also fit Nepal Cube GTX), and they fit almost perfectly! Just a slight 3/16" gap between the front welt and crampon, but makes great contact overall. Simple to use and adjust!
    Will need to see how front cage holds up, but seems it will be sturdy enough for what I need (not ice walls). Will update if I ever have issues.


    • Familiarity: I've used it several times

    Does it all. Quick and easy with step in set up. Not much else to say about it.

    Fits my Spantiks

    • Familiarity: I've used it once or twice and have initial impressions

    Had to get the extender bar, but it fits my 47 Spantiks well.

    Unanswered Question

    how to claim warranty

    Great for Mountaineering

    • Familiarity: I've used it several times

    I picked up these crampons after experiencing a fit issue with a different brand, and I'm pretty happy I did. The crampons were easy to adjust to the correct length and they fit my Koflach Degre mountaineering boots (US size 11) great. The crampomatic system makes them easy to put on and take off with gloves on. I've taken them up a few alpine climbs and some easy-to-moderate vertical ice, and they haven't let me down yet. They appear to be solidly built and durable - no surprise, as in my experience Grivel makes great products. They're a great crampon for mountaineering and easy-to-moderate ice.

    My only minor complaints are that I don't have an easy way to tuck away or otherwise secure the additional strap length after they're fully attached. It would be nice if there was a clip or something along the strap to tuck it away - I've been tying the strap back on itself but that has come loose a few times. Also, it would be nice if the crampons came with a bag.

    Great for Mountaineering


      A great crampon, fits my scarpa boots just fine.

      Great Gift!

      • Familiarity: I've used it once or twice and have initial impressions

      I bought this for my mountaineering uncle for his latest summit up Mt Washington. He had this to say: "Glad I had the Cramp-O-Matics! They were easy to get on, even with my gloves on...and when it is that cold...taking the gloves off is not a good option."

      Climbed Orizaba in these

      • Familiarity: I've used it once or twice and have initial impressions

      .... didn't summit, but it wasn't due to the crampons. Easy on/off with cold fingers and gloves. Fit well on my La Sportiva G2

      Good for BC ski and mountaineering

      • Familiarity: I've used it once or twice and have initial impressions

      I used these with the La Sportiva Nepal EVO GTX mountaineering boot and my Scarpa ski boot and it fits perfectly. I have the cramp-o-matic version and that's the one I would recommend because of tighter fit than the New-matic.

      I use it for easier mountaineering trip and backcountry skiing. For that the crampon fits perfectly and feels very robust. I probably wouldn't use it for vertical ice climbing though and go with something a little bit more aggressive.

      Note on size: it fits my size 13 Scarpa Maestrale ski boot with a little bit of room to spare with the regular out-of-the box center metal bar. If you want to use it on very small boots, you will have to flip the center bar over. There is a nob that will make the center bar not fully extend.

      Worked for Hood and Adams!

      • Familiarity: I gave it as a gift but have feedback to share

      My customer Keith putting his G12's to good use up on Mt. Hood.

      Worked for Hood and Adams!


      • Familiarity: I've put it through the wringer

      This crampon can do just about anything. Whether snow climbing, vertical ice, or glacier travel these can do it all with confidence. Not to say they do everything the best, that's probably impossible, but these will not let you down in the mountains.

      They also adjust super easy to fit between a mountaineering boot and ski boot.

      I wish they came with a crampon bag. That's about the only "con" I have for the purchase.


      Hey Kyle - wanted to ask since it looks like you're using Scarpa Maestrales in your photo. What crampon binding are you using? I'm guessing the 'Crampomatic' style? Do you find they fit on the back of the boot well? Almost every other pon I've tried has interfered with the walk mode switch or hasn't been able to close fully. Thanks!

      Tobin, sorry just saw this. Those are the Salomon MTN explore boots. Crampomatic is the binding style. It does not interfere at all with the boot.

      What brand of crampons seems to be the best? I've always thought of black diamond or petzl but I've never heard of Grivel so I'm not sure if they are quality?


      For crampons the top companies are going to be CAMP USA, Grivel, Black Diamond and Petzl.

      What type of terrain are you looking to be on?

      Shoot me an email anytime you have questions!

      Jared D.

      Expert Gearhead