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  • Mammut - Bionic Alpine Belay Device - Aqua/Graphite

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  • Mammut - Bionic Alpine Belay Device - Aqua/Graphite

Mammut Bionic Alpine Belay Device


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    • Aqua/Graphite, One Size

    6 Reviews


    A multi-pitch essential.

    Mammut made the Bionic Alpine Belay Device superlight and super convenient for multi-pitch climbs. This auto-blocking device attaches directly to anchors to belay your second securely. Mammut added abrasion-proof steel plates everywhere the rope touches to prevent wear and sharp edges. The Bionic also has V-shaped grooves to add friction to ropes as skinny as 7.5mm, but Mammut made sure this device could hold ropes as large as 10.5mm.

    • Abrasion-proof steel plates
    • Auto-blocking mode
    • 7.5-10.5mm diameter
    • Item #MAM00KZ

    Tech Specs

    aluminum, [grooves, rope-bearing surface] steel
    Rope Diameter
    7.5 - 10.5 in
    Claimed Weight
    2.8 oz
    Recommended Use
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

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    Favorite Guide-style Device

    • Familiarity: I've put it through the wringer

    I picked one of these up when it was time to replace my DMM Pivot. I loved the Pivot, but I wanted to try something new. I gave the Bionic Alpine a shot, and I don't regret it one bit! I now have ~150pitches with it.
    Feeds super well, works better than the pivot with 9.5+ mm ropes, and--thanks to the steel inserts--is far more durable than the all-aluminum pivot.
    The Bionic is ~0.3 oz heavier than the pivot, but the extra durability easily makes up for that. It is also lighter that the ATC guide.

    Having worn through the cable covers on several tubers in the past, I have to say that I'm a fan of the solid plate design. Repeated use does occasionally cause some small burrs to form where the carabiner impacts the plate, but these are IMO of little consequence and easily filed down.

    Due to the groove design on the alpine, I've found that it provides a little less friction than the pivot. I really dig this, but some might find it a little harder to belay heavier leaders on thinner ropes.

    Overall, my favorite device of this style and the one I bring on 90% of the climbs I do.

    Safety Hazard

    • Familiarity: I've put it through the wringer

    I've been using it for over two years, 2-3 times a week but just came to realize that the middle wall of the device has deformed due to the hit with my HMS carabiner (rocklock) and there is a sharp end that seems really sketchy. Im retiring it.

    Safety Hazard

    With all respect ...not sure that looks like a safety hazard. Yes, if left as shown in photo; but after heavy use for 2+ years, a touch up with a file & fine sandpaper is fairly routine maintenance (this particular unit still has more solid metal than most ATCs; my DMM Pivot, thin aluminum, have had to file off several such dings). Of course safety is personal. But that thing looks solid.

    Will be great for multipitch

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

    Super light, seems incredibly durable and, not to mention, probably the sexiest belay device on the market. A little trick: learn to use this as an ascender and it works great in a rescue kit.

    Feeds great, Durable

    • Familiarity: I've put it through the wringer

    Super smooth while taking in slack in "guide mode" compared to other "guide" style devices I have used and the added durability of steel on rope bearing surfaces was a big plus for me. Couldn't be happier with it.

    Does what it needs and looks sweet

    • Familiarity: I've put it through the wringer

    Personally a fan of autolocking devices for freeclimbing, I mainly belay a leader with my grigri, but for "guide mode" and rappelling this thing is great. super light, steel where it needs to be (high wear areas) and it looks freakin' sweet hanging from your harness while you're wrist deep in some sandstone