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Black Diamond
Index Ascender

5 out of 5 stars
3 Reviews
Color:Black, Left



Why We Like The Black Diamond Index Ascender

When aiding big walls, we jug up overhangs using the Black Diamond Index Ascender. Equipped with a finger trigger and a foam grip, this jumar promises smooth, systematic operation, while the aggressive teeth deliver a reliable bite into our rope even if it has iced up.


  • Tough, efficient ascender for big wall climbing
  • Aluminum frame delivers lightweight durability and strength
  • Quick-release trigger finger for ascending efficiently
  • Molded ergonomic grip with dual-density foam for comfort
  • Large clip-in hole to accommodate various locking 'biners
  • Black color option has a right-handed design
  • Octane color option has a left-handed design
  • Item #BLDZ9OU
[frame] aluminum
Rope Diameter
8 - 13mm
Claimed Weight
Manufacturer Warranty
1 year

Overall Rating

5 based on 3 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 3 reviews

What do you think about this product?


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5 out of 5 stars

March 22, 2024

All the features you need in a nice light package

Impressed with this design. Nice and light, makes it easy to go up and work on tough cruxes or get some photos of your friends. The handles might be on the small/uncomfortable side of things if you're doing a lot of jugging in a day but for my use cases it's perfect.

Matthew S.

Originally reviewed on

5 out of 5 stars

February 11, 2024


This is really nice the triggers make them amazing

Alice B.

Originally reviewed on

5 out of 5 stars

November 17, 2023

Love it!

I was really nervous getting this at first especially since I am not left handed, however the way they designed it made it super easy to handle with your non dominant hand

Ashley G.

Originally reviewed on