Regular price $190.00


Large Ultrascender:  An ergonomic safety mechanism and thumb notch on the cam make this an easy ascender to operate.  Sold as a pair (one left, one right).

MBS: 4600lbs
Length: 7.4" x 3"

Weight: 9.5oz

From CMI's web site:

The CMI Expedition Ascenders incorporate the most comfortable handgrip ever seen on an ascender. Our ergonomic design cushions the hand and provides something substantial to to hold on to. Other features include an easy to operate safety, dual tie in holes at the bottom, and an extra deep rope channel. The cam is the same design as those in our now famous Ultrascenders and carries the same lifetime wear-out guarantee . Extra large handgrip opening easily accommodates gloved or mittened hands.

MBS: 4,000lbs (17.8kN)
Size: 8x3.8 in (20.3x9.8cm)
Weight each: 10oz (273g)
Sold as a pair (one left, one right)


Cutting Edge.Field Tested.Expedition Proven.
Our ascenders have been there on first ascents, grueling expeditions, and daring rescues, always returning to climb another day. CMI Ascenders are chosen by the most demanding users.
  • Bodies. Our ascender bodies are extruded from aircraft grade aluminum and stainless steel. The aluminum bodies are finished with a hard powder coat to permanently protect them from the elements. All of our ascenders easily accomodate 5/8" ropes. Numerous tie-in points accomodate the largest carabiners in use today.
  • Springs. The 17-4PH stainless steel springs in our ascenders are tested to over a million cycles, simulating lifetimes of the most demanding use.
  • Cams. Newly redesigned with a more aggressive grip and a thumb notch to simplify retraction. Cast from 4140 chrome-moly steel and finished with an exclusive non-metallic finish to to give the cams the same corrosion resistance as stainless steel. We guarantee our cams for life--if you can wear one out, we'll replace it--free!
  • Handgrips. Our molded plastic handgrips fit the contour of the ascender and feature an integrated safety that is easier to use and more comfortable on the hand than any other ascender on the market.