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Products > Ascenders

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.

Expedition Ascender

Our new ergonomic design produces a more comfortable, easy to use, expedition friendly ascender!

Large Ultrascender

The time-tested CMI original design, updated with new performance improving featues.

Small Ultrascender

A smaller, lighter version of the original design.

Ropewalker Ascenders

Our take on the classic Gibbs design offers the first advancements in years.

©1997-2006 CMI Corporation, 224 Mill Road, PO Box 535, Franklin, WV.