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The Black Diamond nForce Ascender uses a unique four-bar pivot system that gives you a 33% better grip than a standard ascender, and it comes packed full of features that make cleaning pitches easier than you ever thought possible. A unique trigger-actuated release makes it easier to slide up your bottom ascender when you're low on a pitch and you don't have any rope weight to help you yet. Since the nForce Ascender works on ropes all the way down to 8mm, it also makes a solid choice for expedition-style mountaineering with fixed ropes. Whatever you need it for, this ascender has you covered, and then some.

  • The four-bar pivot system places your entire body weight on the cam for excellent grip, even on muddy and icy ropes
  • This pivot system also reduces cam pressure when you slide the ascender up the rope
  • Fits ropes from 8 to 13mm in diameter, which makes it ideal for big walls and mountains
  • Large clip hole lets you rotate a locking carabiner 360-degrees if needed
  • Quick-release trigger makes cleaning tricky traverses and lower-outs easy
  • Large ergonomic grip for dexterity
  • Reviews
  • Q & A

What do you think about this product?

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Great piece of gear

  • Familiarity: I've put it through the wringer

After some experience with the Petzl ascender, I opted to purchase my own for work but decided on the BF nForce. Ots features were a better fit for my use an grip than the Petzl

Great ascender!

  • Familiarity: I've used it several times

I bought this ascender (both the left and right) after using the Petzl version for several years. The Petzl ascenders are nice but I like the Black Diamond ascenders just a little bit more because, just as is mentioned in other reviews here, you can use your index finger to open up the cam. Another great feature is that the handles are bigger - this helps a ton when I am wearing thicker gloves. Yes, there are a lot of moving parts on these puppies but I have never had a problem with anything jamming up. Overall I am very happy with my BD ascenders and I would fully recommend them!

Sweet Ascenders

  • Familiarity: I've put it through the wringer

I had a set of Petzl Ascensions and switched to these and will not be switching back. It is so much more convenient that you use your index finger to operate instead of your thumb. The only down side is that if you have fat fingers and are wearing gloves it is a harder to work the trigger

Jug heaven

  • Familiarity: I've put it through the wringer

The boys at BD were thinking when they made these. the ability to disengage the cam with your index finger is the best. sounds whimpy but after a while with the petzl ones my thumb got sore from bending at that angle so much. also I have huge hands and these fit in my hand way better than the petzl. from my observation these don't damage the rope as much as the petzl since the teeth are less aggressive. basically when you have to jug all day you will be glad you got these.



Can someone with small hands (smaller...

Can someone with small hands (smaller woman) use these? As compared to Petzl?