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  • Petzl - Micro Traxion Pulley - Gold
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  • Petzl - Micro Traxion Pulley - Gold

Petzl Micro Traxion Pulley


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    • Gold

    30 Reviews


    Intuitively designed and ready to help you out.

    It's best to be prepared for any vertical situation, whether you're towing gear or coordinating a rescue. The Petzl Micro Traxion Pulley demonstrates a commitment to reliability and low weight, both handy qualities in the vertical world.
    • Integrated progress capture device keeps you from losing what you've gained
    • Upper button allows cam to be locked
    • Aluminum sheave mounted on sealed ball bearings provides optimal efficiency and energy conservation
    • Rope clamp designed to grip even on frozen or muddy ropes
    • Item #PTZ0318

    Tech Specs

    Rope Diameter
    8 - 11mm
    Working Load
    Breaking Strength
    Claimed Weight
    Recommended Use
    Manufacturer Warranty
    3 years

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Tests good

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

    Havent used it outside, but have used on my home anchors that i practice different setups and techniques. Moves very smoothly up the rope compared to my ropeman. Also like the catch that holds back the teeth for ease of lowering the device or using it as a pulley

    My favorite device for mixed solo belay

    • Familiarity: I've put it through the wringer

    I’ve tested multiple solo belay setups for alpine, ice, mixed, and traditional lead climbing. Nothing has compared to using two Petzl Micro Traxion pulleys. They are lightweight (6oz for the pair), feed smoothly, and capture quickly. It’s the first solo setup where I feel safe sending complicated (i.e. non-sport) routes.

    Unlike solo belay devices they are multi-purpose, and, frankly, unbeatable for typical pulley uses like crevasse rescue and hauling.

    A few tips:

    I use two pulleys for my setup but Petzl recommends using two different ascenders for solo belay (i.e. a Micro Traxion and another device). A popular choice is a Micro Traxion with a Petzl Ascension ascender. I like this setup but found it slightly more cumbersome.

    If you’re using this for solo alpine, ice, or mixed climbing you shouldn’t use a Petzl Shunt as your secondary device since, frighteningly, it won’t lock on sloping terrain. Likewise, you shouldn’t use the Petzl Microcender since it won’t work on wet or frozen ropes.

    The Petzl guide for “Installation on one single rope with two ascenders” is excellent. I want to emphasize their advice for clipping your secondary device since it’s unbeatable for making your setup comfortable.

    Here’s an outline:

    - Use a quicklink oval carabiner to connect the tie-in loops of your harness.

    - Use a quickdraw sling (e.g. Petzl Finesse Sling) to connect the quicklink to the locking carabiner that connects the secondary device.

    - Connect your shoulder or neck sling to the eye of the quickdraw sling.

    Your comfort is determined by finding the appropriate quickdraw sling length (I’m 5' 10" and I’ve found that 17cm is perfect) and making sure your tie-in loops are tightly bound (I prefer using a quicklink oval carabiner but I’ve met people that prefer something hitched or tied).

    Small and Light for Emergency Use

    • Familiarity: I've used it several times

    I carry this on me when I explore abandoned mines and caves that we will be rappelling into. I've played with it in the backyard and made a pulley system to haul heavy backpacks up mine shafts so we don't have to ascend with them on. I also carry it in case someone gets hurt and we need to hoist them out. Luckily I haven't had to use it in a bad situation yet and I hope I never have to, but at least I'm prepared if something goes wrong.

    Absolutely fantastic

    • Familiarity: I've used it several times

    Petzl never fails to impress. The Traxion is a fantastic tool to add to your rescue arsenal and for MAS and rope ascension. It's simply one of the best progress capture pulleys out there and for as much as it is potent in performance is it also amazingly light. Paired with the new Petzl rope grab and two oval biners it is always with me when I am out in the alpine or on the rock.

    Good to have!

      I use my micro traxion for hauling and TR soloing.
      I am new to both.
      Still, I think that the Micro Traxion is kind of the go to device. It is easy to use, reliable, durable and lightweight.
      For rope soloing I back the micro traxion up with a Wild Country ropeman ascender - tho I think a second micro traxion might feel a bit smoother.


      • Familiarity: I've put it through the wringer

      An awesome tool for many different applications. Crevasse rescue, rope ascention, hauling system, rescue set-up, or as just a pulley. Easy to use and manage Very smooth, very light weight. You won't be disappointed.But read the manufacturer's instruction when learning about this device.
      Very smooth, very light weight. You won't be disappointed.

      solid piece of equipment

      • Familiarity: I've used it several times

      multi-use, lightweight and nearly bombproof. looking forward to using in a pulley (rescue) scenario. good piece of gear to have in the line-up.

      Great progress capture

        I personally bought a pair for self belay purposes in a top rope solo scenario, and so far I'm happy with them. They feed easily and catch instantly if set up correctly. They can be tricky to disengage (sometimes even when unweighted) and they don't like to stay unlocked during a rappel (although I can't complain about this too much... vs. the other way around). I end up having to take them off completely to descend and install them again to start another lap. If oriented correctly, they pose no damage to a rope and I feel secure. I haven't used them as a rescue pulley yet, but I'm sure they'd be awesome in a progress capture haul setup. For general purpose, I can see the catch not staying unlocked and providing some annoyance. But otherwise, they're great! I've started sneaking them on my MP routes. They're light enough and small enough to be negligible.

        Petzl Micro Traxion

        • Familiarity: I've used it several times

        Its so small that theres no excuse for bringing it climbing/canyoneering. Paired with the equally small Partner pulley and you have yourself a set up! Ive used this to set up crevasse rescue, climbing accident rescue, ascending, hauling, tensioning rope, and I even used it in a project in one of my engineering classes where I compared theoretical mechanical advantages to reality. I am very impressed how smooth it is, after ascending on this guy I never want to have to use anything else again.

        The Best

        • Familiarity: I've put it through the wringer

        The Micro Traxion totally does what it says, even holds grip on muddy ropes. Best piece of gear like this out there. Anything else that's cheaper, you pay for what you get and they wear out quick. Amazed at how long this piece holds up.

        Versatile peice of equipment

          This device should be in every climbers arsenal of gear. It has so many applications, not only for climbing but for rescue, setting up a z drag to get your raft flipped back over or even for trimming trees come spring cleaning. A must have device.

          Tons of uses

          • Familiarity: I've put it through the wringer

          Everyone that has already left reviews has hit on a number of great uses for the tool so I thought id leave my input on one that nobody has mentioned.

          For tensioning longer slacklines, a pulley system is used. The pulley system is usually 5:1 but can be 6:1, 9:1 etc. Most people use locking belay devices like the Gri Gri , Eddy , Petzl ID , etc to hold the tension on the line. The problem with these devices is that they are not very efficient, and effectively kill the mechanical advantage of your pulley system. Enter the Micro Traxion. Since it is an actual pulley you dont lose any of the MA of your pulley system, and the toothed cam holds the line in place perfectly. The use requires a detensioning method, and here I have employed the use of a friction hitch, the valdotain tresses, to hold the tension once the line is rigged, and for easy detensioning when the session is over.

          Tons of uses

          Big things comes in small packages

          • Familiarity: I've used it several times

          I see why they call it the micro trax now. Very small and lightweight compared to the mini. I grabbed two for some TR soloing and they weigh next to nothing. It's also great for hauling, and can be used if need be for rescue scenarios. It's also extremely easy to use. The small and lightweight design ultimately allows you to save space and move faster which ultimately makes you more efficient. Efficiency is key. One downside is that is doesn't slide quite as smoothly up the rope as the mini did, but it makes up for that in terms of size.

          Big things comes in small packages

          Versatile tool

          • Familiarity: I've put it through the wringer

          I initially got the Microtraxion to use as part of a solo toproping setup (yes, roped climbing while alone is especially dangerous...don't try this at home), but it has tons of uses. This is a really lightweight addition to a glacier travel setup that could make crevasse rescue much quicker in the right hands (compare the ease of use and flexibility vs having a regular pulley or a prusik-minding pulley). It's certainly not an inexpensive product, but there is a lot of value to be had for the money. While at the end of the day it's best also knowing down to accomplish some of the same tasks with a minimalist setup (i.e. just prusiks and biners), a Microtraxion can really help speed things up and improve efficiency. Two thumbs up here.


            A well built, light, strong and versatile little piece. I plan to bring it along for glacier crossings and crevasse rescue and then repurpose it for some aid climbing and big walls in the spring. I've only been able to do practice systems so far with it but I am already impressed.

            Self-Belay Device

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

            I was hesitant to pick up a piece of metal that was so expensive, but I'm really pretty happy I did. My primary reason for buying this piece was to use it as a backup fall prevention device in my solo toprope set up, and in this regard it works fabulously. It slides up the rope incredibly smoothly and locks instantly on the way down. It does make me a little nervous that the teeth can be disengaged, but I always make sure before I start a route that I'm good to go, and it's only a backup anyways, so I still feel safe. I've never needed the backup yet (thank goodness) but I have full confidence that it will be there for me if I ever need it.

            The other reason I bought this is because I like MULTIFUNCTIONAL gear. There are many other scenarios where I could use this piece, and as someone who has an interest in mountaineering and canyoneering, I'm sure that one day this piece will accompany me on another trip for another reason. It's expensive, but it's good.

            Has anyone used the Micro Traxion on a 7.8mm rope? Been having a hard time figuring out an effective progress capture on the 7.8, as a prussik cord thin enough to be effective jams into the pulley and causes all sorts of fun. Thanks!

            What type of rope and size do I get. I...

            What type of rope and size do I get. I want to use the pulley to pull my bike up 2 flights in a brownstone building.

            Best Answer

            You'll need to get a fairly thin rope (<11mm) and you don't want it to stretch, so I'd recommend something in this category ( If those are too long/expensive for you, you can go to a hardware or marine store and ask them to cut a custom length of static braided nylon, but I'd bring the pulley to make sure that it'll run smoothly.